39 results about "Silver sulfide" patented technology

An active cathode material is doped with silver to effectively improve the cathode's electrical conductivity. The active material may be sulfur, and the silver may be in the form of silver, silver sulfide, or both. If desired, the cathode material includes a matrix of conductive nano-particles which include elemental sulfur, silver and or silver sulfide. The present disclosure may be applicable to other battery materials as well, such as, for example, lithium iron phosphate.

The invention provides a reflective integrated electrochromic device. The reflective integrated electrochromic device sequentially comprises a first substrate layer, a working electrode layer, an integrated electrochromic layer, a counter electrode layer and a second substrate layer, the integrated electrochromic layer comprises a metal source compound; the metal source compound is selected from silver chloride, silver acetate, silver nitrate, silver perchlorate, silver sulfate, silver cyanide, silver sulfide, silver hexafluorophosphate, silver tetrafluoroborate, silver tetrachloroaluminate, silver trifluoromethanesulfonate, silver bis (trifluoromethane sulfonimide), copper fluoride, copper chloride, copper cyanide, copper sulfate, copper acetate, copper aluminate, cuprous fluoride, cuprous chloride, cuprous cyanide, gold chloride and gold cyanide; the catalyst is one or more of gold sulfide, gold chloride, gold (II) sulfide, nickel chloride, nickel sulfate, cobalt chloride and platinum chloride. The device has a relatively large transmittance / reflectivity dynamic change range, can perform light and heat management at the same time, and can keep a stable coloring or fading state for one month or even several months under a no-load condition.

This invention relates to the field of nanocomposite materials technology, specifically to a carbon-based silver sulfide composite aerogel with synergistically enhanced light-harvesting and biofouling resistance, its preparation method, and its applications. The method involves pouring a chitosan-graphene solution into a polystyrene mold and using different cryogenic casting methods to obtain chitosan-graphene aerogels with different orientations. Carbonization under a N2 atmosphere yields carbon-based aerogels with different structures. Immersion in a tannic acid-Tris solution allows for the adsorption of tannic acid molecules. After washing with deionized water, the aerogels are immersed in a silver nitrate solution to form tannic acid-silver ion complexes. Further washing with deionized water and immersion in a thioacetamide solution yields carbon-based silver sulfide composite aerogels with different structures. This method solves the problem of performance loss due to biofouling in carbon-based three-dimensional porous materials. The carbon-based silver sulfide aerogel exhibits superior light absorption and photothermal properties compared to carbon-based zinc oxide aerogels, overcoming the problem of weakened evaporation performance in conventional anti-biofouling designs.

The invention discloses a silver sulfide quantum dot loaded composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of greenhouse gas treatment. According to the invention, different amounts of AgNO3 and 3-mercaptopropionic acid are added on the surface of CuInS2 to introduce Ag2S quantum dots in situ, so that the separation and transfer capabilities of photo-generated charges are enhanced; the composite catalyst can construct carbon dioxide reaction active sites on the premise of maintaining the unique structure and electronic characteristics of the ternary chalcogenide, improves the carbon dioxide photoreduction reaction activity, and can maintain good stability.

The present invention discloses a flotation agent for copper, molybdenum, gold, and silver sulfide ores and a cascade enrichment flotation method for copper, molybdenum, gold, and silver sulfide ores, relating to the field of mineral flotation technology. The composite depressant is compounded with nitrated modified humic acid and nano-silicon dioxide in a certain mass ratio. This depressant enhances the simultaneous capture of copper, molybdenum, gold, and silver under the action of a composite collector. The composite collector is compounded with mercaptobenzothiazole and hydroxamic acid, synergistically improving the recovery rate of gold and silver. The process includes a mixed flotation stage and a cascade separation stage, ultimately yielding a copper, molybdenum, gold, and silver concentrate. This process addresses the difficulties in separating sulfur and precious metals and the high toxicity of the reagents in traditional processes, offering the advantages of high efficiency, environmental protection, and a short process.

An electrochemically mediated, hydrometallurgical method is provided for extraction of nickel, zinc, lead, silver, molybdenum, and / or copper from sulfide minerals. These metal concentrates, such as pentlandite, pyrrhotite, pyrite, sphalerite, galena, Ag2S, MoS2, etc., are contacted with nitric acid and cerium(IV) nitrates, cerium(IV) methanesulfonate, and / or cerium(IV) sulfate, as oxidative leaching agents to preferentially leach the target metals contained therein. The strong oxidizing capacity of cerium(IV) enables rapid dissolution of metal sulfides under ambient conditions. Cerium(IV) can be electrochemically regenerated and recycled for treatment of additional sulfide minerals. Target metal products can be extracted via processes such as solvent extraction and precipitation, enabling complete recovery, e.g., of nickel from pentlandite.

The invention discloses a preparation method of a three-phase Ag / Ag2S / h-RGO photocatalyst, comprising the following steps: functionalized SiO2 nanospheres are added to ultrapure water and dissolved to obtain a mixed solution; graphene oxide is dispersed in ultrapure water, ultrasonicated, and then placed in the mixed solution and vigorously stirred to generate SiO2@GO; NaBH4 is then added and stirred, followed by sodium hydroxide, the mixture is stirred, and the resulting product is washed to obtain h-RGO; h-RGO is dissolved in water, thioglycolic acid is added, and vigorously stirred; AgNO3 is then added and stirred, followed by Na2S·9H2O and stirred, followed by centrifugation to obtain a product dissolved in water, and silver sulfide is in situ reduced with a sodium borohydride solution; the product is washed and dried to obtain a three-phase Ag / Ag2S / h-RGO photocatalyst. The present invention adopts a layer-by-layer (LBL) self-assembly method to synthesize nanosheets RGO with a hollow structure, and a simple in situ growth method is used to prepare a three-phase Ag / Ag2S / h-RGO photocatalyst.

The invention discloses a preparation method of an efficient light-emitting silver-indium-sulfur and silver-indium-zinc-sulfur composite nano material, and belongs to the technical field of light-emitting nano materials and preparation. The preparation method comprises the following steps: by taking silver dibutyl dithiocarbamate, indium dibutyl dithiocarbamate and zinc carboxylate as precursors, uniformly mixing at a dodecane neutralization pretreatment temperature to form a mixed solution A; naturally cooling, adding dodecanethiol, and uniformly stirring and mixing to obtain a mixed solution B; at the reaction temperature, decomposing part of silver dibutyldithiocarbamate in the mixed solution B to generate silver sulfide clusters; the activity of the silver sulfide cluster is closely related to the size, the silver sulfide cluster is used as a seed to induce growth of silver-indium-zinc-sulfur, meanwhile, silver sulfide is converted into silver-indium-sulfur, finally, the silver-indium-sulfur and silver-indium-zinc-sulfur composite nano material is obtained, the band gap is 2.0-2.8 eV, the luminous efficiency is 52% or above, and the luminous efficiency can still be kept at 78% or above after five months. The preparation process disclosed by the invention is low in raw material cost and good in process controllability.

The invention discloses a modified nano silver sulfide assisted hermetia illucens sludge treatment method and application, and relates to the technical field of environmental protection. According to the sludge treatment method of adding the modified nano silver sulfide into the premixed matrix and inoculating the hermetia illucens larvae, sludge dry basis reduction is realized in a short time, the treatment period is shortened, the volume of a pile is compressed due to accelerated decomposition of organic matters and generation of insect sand, the occupied field and the pile turning energy consumption are reduced, and the cost is reduced. Efficient treatment of municipal sludge, remarkable reduction and volume compression are met; silver ions (Ag < + >) are continuously released through modified nano silver sulfide by means of a chitosan negative charge shell layer, common pathogenic bacteria in sludge are rapidly inactivated in the early stage of composting, heavy metal elements such as cadmium, lead, arsenic and mercury in treated insect sand are all lower than the national standard, secondary disinfection or chemical stabilization treatment is not needed, agricultural safety application is directly met, and the method is suitable for industrial production. The closed loop of'sludge-insect sand-farmland 'is realized, and good social, environmental and economic benefits are achieved.

The invention discloses a treatment method of high-salt and high-COD silver powder wastewater. The treatment method comprises the following steps: step 1, storing silver powder wastewater; step 2, neutralizing caustic soda flakes; step 3, sulfuration and silver deposition; step 4, carrying out nanofiltration to remove PVP (Polyvinyl Pyrrolidone); step 5, MVR simulation evaporation; step 6, carrying out ozone catalytic oxidation on COD; step 7, reverse osmosis separation and impurity removal; and step 8, sludge dewatering. After the wastewater is treated by the method, the water quality can reach the primary standard of Integrated Wastewater Discharge Standard, the indirect discharge standard of Inorganic Chemical Industrial Pollutant Discharge Standard and the like. According to the method, PVP is removed at the front end of the evaporation process, the evaporation efficiency of the MVR evaporator and the operation stability of a wastewater system can be improved, and the silver sulfide product can be efficiently recycled. According to the method, the environmental protection requirement and the economic requirement are met, and resource utilization of silver in the silver powder wastewater is achieved on the basis of guaranteeing stable operation of a wastewater system.

The present invention relates to a thin-film photovoltaic module with a silver sulfide coating, including a glass substrate. A back-contact layer, an absorber layer and a front electrode layer are sequentially stacked on the glass substrate. The top surface of the front electrode layer is coated with a metal grid matching the front electrode layer, the metal grid is made of silver-containing paste, and the surface of the metal grid is covered by a black silver sulfide coating. According to the present invention, by forming the black silver sulfide coating on the surface of the metal grid, the optical reflection of the metal grid is reduced, so that the reflectivity of the metal grid is decreased, and as a result, the brightness of photovoltaic circuits and modules with the metal grid is decreased, improving the appearance.

The invention relates to the field of functional materials, in particular to a silver sulfide composite photocatalyst based on indium tin sulfide surface modification and a preparation method thereof.The preparation method comprises the steps that Ag2S nanoparticles are prepared through a two-step hydrothermal method, silver nitrate is dissolved in ultrapure water, TAA is added after magnetic stirring, a hydrothermal reaction is conducted for 3-12 h, precipitates are washed three times through ultrapure water and three times through ethyl alcohol respectively, and normal-pressure drying is conducted for 3-24 h; and lamellar SnIn4S8 is grown on the surface of the SnIn4S8 in situ to form a heterojunction, namely an aqueous solution of Sn < 4 + > and acetic acid is prepared, Ag2S nanoparticles are added for ultrasonic treatment for 10-30 min, TAA is supplemented, hydrothermal treatment is performed for 3-6 h, and centrifugal collection is performed at the speed of 8000-10000 rpm. According to the method, the problems of high carrier recombination rate and insufficient visible light utilization of traditional photocatalysts such as TiO2g-C3N4 are solved, the efficiency retention rate is high after five cycles, XRD (X-Ray Diffraction) has no impurity peak, and the method is suitable for tetracycline antibiotic pollution treatment in water and has wide application prospects.

The application discloses an electrochemical method for high-selectivity detection of hydrogen sulfide in a living body by using a nano-silver carbon fiber microelectrode pretreated by sodium sulfide. The application discloses an electrochemical method for high-selectivity detection of hydrogen sulfide in a brain nervous system. The method comprises the following steps: silver nano-particles are electrodeposited on the surface of a carbon fiber microelectrode by using an electrodeposition method; the electrode is pretreated in a sodium sulfide solution, so that a silver sulfide film is generated on the surface of the electrode, the surface of the microelectrode is regulated, and the purpose of high-selectivity detection of hydrogen sulfide in a living body is achieved. Hydrogen sulfide is combined with silver nano-particles to form silver sulfide which is deposited on the surface of the electrode to cause a change in the potential of the electrode. The change in the potential in the reaction process is monitored in real time by using an open circuit potential method, so that the change in the concentration of hydrogen sulfide can be reflected. Thus, the method can realize high-selectivity detection of hydrogen sulfide in a condition closest to physiological conditions.

The invention discloses a composite solid electrolyte, a battery cell, a single battery and electric equipment. The composite solid electrolyte is prepared by co-doping silver sulfide and sulfide electrolyte. In the charging process, silver ions in the composite solid electrolyte are subjected to electrochemical dissolution, and nanoscale lithium-loving silver seeds are formed along the grain boundary and pores capable of conducting electron transfer. These silver seeds are alloyed with the lithium, inducing uniform electroplating of the lithium therebelow and returning to the electrolyte layer upon lithium exfoliation to improve reversibility during cycling.

The invention belongs to the technical field of chemical materials, and discloses a silver modified bismuthene core-shell material, a silver sulfide modified bismuthene core-shell material and a preparation method thereof. The preparation method of the silver-modified bismuthene core-shell material comprises the following steps: preparing a non-aqueous composite electrolyte; assembling an electrochemical stripping system; performing electrochemical stripping and in-situ coating; and separating and washing the product. The preparation method of the silver sulfide modified bismuthene core-shell material comprises the following steps: dispersion treatment; preparing a sulfur source; performing in-situ transformation; and separating the product. According to the invention, unique metal-semiconductor heterojunction and semiconductor-semiconductor heterojunction structures are constructed, and the method has excellent interface bonding and stability, is a green and efficient one-pot preparation process, and is suitable for large-scale industrial production.

The invention discloses an efficient active oxygen free radical generation method based on silver sulfide quantum dots and application of the efficient active oxygen free radical generation method, and belongs to the technical field of nano catalysis. According to the method, Ag2S quantum dots are added into water or an H2O2 aqueous solution to be mixed and react, active oxygen free radicals OH are obtained, and the principle of the method is as follows: Ag2S QDs and the aqueous solution form a solid-liquid interface, after interface contact is enhanced through vortex or ultrasound, water molecules and hydroxyl ions are induced to lose electrons on the interface to form OH, and the OH is separated from the solid-liquid interface. Meanwhile, Ag2S QDs capture electrons to form a negatively-charged excited state (Ag2S), H2O2 serves as a reaction substrate, electrons are obtained from the negatively-charged Ag2S, and OH is further generated. The limitation of a traditional catalytic system is broken through, efficient generation of active oxygen under a solid-liquid interface is achieved, the rapid degradation capacity on organic pollutants (such as dye and pesticide) is shown, and the potential application value in medicine preparation is achieved.

The invention relates to a superbright silver sulfide nanocrystal based on a rare earth mixing passivation strategy and a preparation method and application thereof.The preparation method comprises the following steps that silver nitrate, rare earth compounds (optional two to three types), oleic acid, oleylamine and octadecene are mixed in an inert atmosphere, a diphenyl ether solution of diphenylthiourea is rapidly injected in a hot injection mode, and the superbright silver sulfide nanocrystal is obtained. And separating and purifying to obtain the super-bright silver sulfide nanocrystal. Compared with the prior art, the method disclosed by the invention is simple to operate, mild in condition, low in cost and good in repeatability; the prepared silver sulfide nanocrystals are uniform in size, have the ultrahigh near infrared fluorescence quantum yield (PLQY) close to 100% at 1240 nm, do not contain toxic heavy metal elements and have huge application prospects in the fields of sensors, LED manufacturing, biological imaging and the like.

The application discloses a modified nano-silver sulfide auxiliary black soldier fly sludge treatment method and application, and relates to the technical field of environmental protection.The application realizes sludge dry base reduction in a short time, shortens a treatment period, and the pile volume is also compressed due to accelerated decomposition of organic matter and formation of worm sand, thereby reducing site occupation and turning pile energy consumption, meeting efficient disposal of municipal sludge, significant reduction and volume compression; through the modified nano-silver sulfide, silver ions (Ag + ) are continuously released by means of a chitosan negative charge shell, common pathogenic bacteria in sludge are rapidly inactivated in the early stage of composting, and heavy metal elements such as cadmium, lead, arsenic and mercury in the worm sand after treatment are all lower than national standards, so that secondary disinfection or chemical stabilization treatment is not needed, direct agricultural safety application is met, a "sludge-worm sand-farmland" closed loop is realized, and good social, environmental and economic benefits are achieved.

The invention relates to a back contact cell grid line repairing method and device, and belongs to the technical field of solar cell manufacturing, a laser light source is adopted to process a silver grid line containing silver sulfide of a back contact cell so as to remove the silver sulfide generated by oxidation of sulfide on the silver grid line in the solar cell; and the grid line is repaired through laser equipment without newly adding equipment, and the grid line can be directly integrated to the existing production line, so that the equipment investment cost is reduced.

comprising organic light-emitting component (100) - a substrate (1), - a first electrode (2) which is arranged above the substrate (1), - at least one organic functional layer stack (5) designed to emit radiation and arranged at least above the first electrode (2), - at least one conductive current expansion structure (3) arranged on the first electrode (2) and facing the organic functional layer stack (5), wherein the conductive current expansion structure (3) comprises at least one metal, wherein the conductive current expansion structure (3) has a layered structure (301, 302, 303) comprising two silver layers (301, 303), wherein the two silver layers (301, 303) are separated from each other by another metal layer (302) formed from a metal, wherein the conductive current expansion structure (3) is coated with an inorganic passivation layer (4), wherein the inorganic passivation layer (4) comprises a sulfide of at least one metal of the conductive current-expansion structure (3), wherein the inorganic passivation layer (4) has a layer structure (401, 402, 403) which, where the silver layers (301, 303) are arranged, has silver sulfide, and where the metal layer (302) is arranged, has a sulfide of the metal, wherein the inorganic passivation layer (4) is either an n- or a p-type semiconductor, such that no current flow occurs between the conductive current expansion structure (3) and the organic functional layer stack (5) via the inorganic passivation layer (4), and - a second electrode (6) arranged above the organic functional layer stack (5).

This invention discloses a controllable preparation method for core-shell structured silver sulfide-iron carbide heterostructures using a seed-growth chemical liquid-phase method. Silver sulfide quantum dots, an organometallic compound of iron, and ammonium bromide salt are dissolved in a high-boiling-point organic solvent and subjected to a high-temperature carbonization reaction. The core-shell structured silver sulfide-iron carbide heterostructure is then precipitated via a polar organic liquid. This material exhibits ferromagnetism with a high maximum magnetic saturation intensity. Simultaneously, these heterostructured nanoparticles exhibit excellent near-infrared II luminescence properties. This invention prepares high-quality silver sulfide-iron carbide heterostructured nanoparticles using silver sulfide quantum dots, an organometallic compound of iron as a precursor, and an ammonium chloride salt. Water-soluble silver sulfide-iron carbide heterostructured nanoparticles are obtained through water-soluble modification with distearate phosphatidylethanolamine-polyethylene glycol. These nanoparticles have potential applications in optics, biomedicine, environmental science, materials science, catalysis, energy, and magnetic storage. The preparation method is simple and easy to implement, suitable for industrial production.

The invention discloses a double-Z-type heterojunction for photoelectrochemical biosensing and photocatalysis and application of the double-Z-type heterojunction. The double-Z-type heterojunction is prepared by the following method: 1) obtaining a host Ti-MOF (Ti-Metal Organic Framework) by using a simple solvothermal method; 2) taking 1g of NH2-MIL-125 (Ti), taking polyvinylpyrrolidone as a structure-directing agent, and forming an MOF-on-MOF heterojunction on the surface of the NH2-MIL-125 (Ti) through epitaxial growth; and 3) silver sulfide (Ag2S) nanoparticles are formed on the MOF-on-MOF heterojunction through an in-situ growth strategy, when AFB1 analysis is carried out, the detection limit of the silver sulfide nanoparticles is as low as 0.29 fg / mL and spans seven orders of magnitude (10 <-5 > to 10 < 2 > ng / mL), and in addition, the NH2-MIL-125 / NH2-BDC-Fe / Cu / Ag2S composite material has excellent photocatalytic degradation efficiency and stability on AFB1.

This invention belongs to the technical field of solid electrolytes and discloses a method for preparing a liquid-phase doped silver-germanium sulfide solid electrolyte with high ionic conductivity. The method includes: 1) dispersing lithium sulfide and phosphorus pentasulfide in an organic solvent, heating and stirring to obtain a precursor solution containing Li3PS4; 2) mixing lithium iodide, sulfur powder, and additives with the precursor solution, heating and stirring to remove the organic solvent, and obtaining a powder; 3) sintering the powder under a protective atmosphere to obtain a silver-germanium sulfide solid electrolyte; the additives are one or more of SiS2, GeS2, SnS2, As2S3, and Sb2S3. This invention is simple, and the prepared silver-germanium sulfide electrolyte undergoes elemental doping during thermal crystallization, improving the electrolyte's ionic conductivity and air stability. This method is suitable for industrial production.

The invention belongs to the technical field of thermoelectric materials, and discloses a preparation method of a high-performance silver sulfide-based inorganic plastic thermoelectric composite material, which comprises the following steps: respectively weighing silver, sulfur, selenium and tellurium elementary substance powder according to the nominal chemical dosage ratio of Ag2S1 / 3Se1 / 3Te1 / 3, mixing to obtain mixed powder, and carrying out vacuum melting to obtain an Ag2S1 / 3Se1 / 3Te1 / 3 cast ingot; grinding the cast ingot to obtain Ag2S1 / 3Se1 / 3Te1 / 3 powder; and proportioning the Ag2S1 / 3Se1 / 3Te1 / 3 powder and the raw material constantan fiber, carrying out ball-milling mixing, and then carrying out spark plasma sintering to obtain the silver sulfide-based inorganic plastic thermoelectric material compounded with the constantan fiber. The preparation method is improved, the Ag2S1 / 3Se1 / 3Te1 / 3 matrix is formed through smelting, then the second-phase constantan alloy fiber is introduced through spark plasma sintering, the second-phase constantan alloy is dispersed and distributed in the matrix phase in the form of fiber, and the obtained composite material can effectively solve the problem that in the prior art, the power factor of an Ag2 (S, Se and Te) system material is low.

The invention discloses a preparation method of a gold copper at silver sulfide / copper sulfide photocatalytic colloidal material with a core-shell structure, and the preparation method specifically comprises the following steps: adding CTAC, AgNO3 and an L-ascorbic acid solution into a gold copper nano-alloy precursor, and transferring the mixture into a vacuum oven for heat preservation to obtain a gold copper at silver solution; adjusting the pH value of the gold-copper-silver solution by using a NaOH solution, adding TAA, stirring, adding CTAB, HDA, L-ascorbic acid, TAA and copper nitrate into the gold-copper-silver sulfide solution, uniformly stirring, and transferring the mixture into a vacuum drying oven for heat preservation; and washing, centrifuging, and dispersing in deionized water. The AuCu-coated Ag2S / CuS photocatalytic colloid material with the core-shell structure prepared by the invention has the characteristics of high photocatalytic hydrogen production efficiency, high photon-generated carrier separation efficiency and high visible light absorption, can show excellent photocatalytic activity, and shows a good application prospect in the aspect of hydrogen production by photocatalytic full water splitting.

The application relates to a preparation method of air-stable AgBiS2 nanocrystals, and relates to a preparation method of stable AgBiS2 nanocrystals. The application aims to solve the problem that AgBiS2 colloidal nanocrystals prepared by an existing method are easily decomposed into bismuth oxide and silver sulfide under the combined action of oxygen and light, which is not conducive to the storage stability of the AgBiS2 colloidal nanocrystals in the environment, and reduces the photoelectric performance of the AgBiS2 colloidal nanocrystals. The method can be briefly described as follows: in the synthesis process of AgBiS2 colloidal nanocrystals, after the AgBiS2 colloidal nanocrystal solution is lowered to a certain temperature, a metal halide solution is injected into the nanocrystal solution, surface defects of the AgBiS2 colloidal nanocrystals are passivated through the metal halide, and AgBiS2 colloidal nanocrystals with high stability and uniform morphology under the environmental conditions are obtained.

This invention belongs to the field of geochemistry and discloses an apparatus and method for the conversion of silver sulfide to sulfur hexafluoride for polysulfide isotope determination. The apparatus includes a basic vacuum module, a reaction and extraction module, a purification module, a sample collection module, and a waste gas treatment module. The basic vacuum module provides a high vacuum environment for the system. The reaction and extraction module is used for the silver sulfide fluorination reaction and preliminary extraction of sulfur hexafluoride. The purification module is used for the separation and purification of sulfur hexafluoride. The sample collection module is used for the collection and preservation of purified sulfur hexafluoride. The waste gas treatment module is connected to the reaction and extraction module and includes a fully sealed waste gas absorption tank with an alkali metal hydroxide absorbent inside. Both ends are connected to the vacuum system via valves. This invention enables online chemical absorption of toxic waste gases from fluorination reactions, eliminating the safety hazards of traditional waste gas treatment methods and ensuring the safety and reliability of the sample pretreatment process for polysulfide isotope determination.

The invention discloses a silver sulfide coated sulfur-carbon positive electrode material and a preparation method and application thereof, and the method comprises the following steps: preparing a precursor solution A containing Ag ions; dissolving ammonium sulfide in deionized water to prepare a precursor solution B; dispersing a sulfur-carbon compound in deionized water to prepare a precursor dispersion liquid C; and adding the precursor solution A and the precursor solution B into the precursor dispersion liquid C in an atomizing manner to react, and after the reaction is completed, centrifuging the reaction liquid, precipitating, filtering and drying in vacuum to obtain the composite material. A coating layer is arranged on the surface of the sulfur-carbon positive electrode material, and the coating layer is mainly Ag2S. The material is used as a lithium-sulfur battery positive electrode material, silver sulfide in the material participates in a reaction, the ionic conductivity at a positive electrode interface is remarkably improved, meanwhile, the silver sulfide coating the sulfur surface can react with lithium ions in situ, a layer of nano silver is generated on the sulfur surface, and the interface dynamics of the electrode material is remarkably improved.

To provide a rotating body for fixing excellent in durability even in such a printing environment in which a high temperature state continues for a long time.SOLUTION: A rotating body for fixing comprises: a base material containing resin; a heat generating layer on the base material; and a resin layer on a surface of the heat generating layer on the opposite side of a side facing the base material. The heat generating layer extends in a circumferential direction of an outer peripheral surface of the base material. The heat generating layer contains silver. Silver sulfide is present in at least one of the surface of the heat generating layer facing the resin layer and the inside of the heat generating layer.SELECTED DRAWING: Figure 1

A rotating fixing member containing a base material containing a resin, a heat generating layer on the base material, and a resin layer on a surface of the heat generating layer opposite to another surface of the heat generating layer facing the base material. The heat generating layer extends in a circumferential direction of an outer peripheral surface of the base material. The heat generating layer contains silver. At least one of the specific conditions (A) and (B) is satisfied: (A) silver sulfide is present at the surface of the heat generating layer opposite to the another surface facing the base material, (B) silver sulfide is present inside of the heat generating layer.