62 results about "SULFIDE ION" patented technology

A solid amorphous electrolyte composition for a thin-film battery. The electrolyte composition includes a lithium phosphorus oxynitride material containing a sulfide ion dopant wherein the atomic ratio of sulfide ion to phosphorus ion (S/P) in the electrolyte ranges greater than 0 up to about 0.2. The composition is represented by the formula: where 2x+3y+2z=5+w, x ranges from about 3.2 to about 3.8, y ranges from about 0.13 to about 0.46, z ranges from greater than zero up to about 0.2, and w ranges from about 2.9 to about 3.3. Thin-film batteries containing the sulfide doped lithium oxynitride electrolyte are capable of delivering more power and energy than thin-film batteries containing electrolytes without sulfide doping.

A safe and highly-reliable all-solid-state lithium secondary battery using a sulfide-based solid electrolyte material which can restrain generation of hydrogen sulfide gas, in case a large amount of water is entered into a battery case by an accident such as submersion associated with a breakage of the container. An all-solid-state lithium secondary battery using a sulfide-based solid electrolyte material, wherein the battery has a metal salt M-X comprising a metal element “M” and an anionic part “X” in a battery case thereof, and further wherein a metal cation of the metal salt M-X generated by disassociation caused with water can react with a sulfide ion generated by a reaction between the sulfide-based solid electrolyte material and the water.

The invention belongs to the technical field of water treatment, in particular to a method for treatment of wastewater containing heavy metal molybdenum. The specific steps are as follows: placing the wastewater which needs to be treated and contains the heavy metal molybdenum into a sealing device; adding sodium sulfide into the device, controlling the pH value of the wastewater after adding the sodium sulfide at 2-3, carrying out reaction for 1-3h at room temperature, and continuously adding the generated sodium sulfide into the molybdenum-containing wastewater for recycling; adding a flocculant into the obtained solution, stirring, carrying out the reaction, standing till precipitate is settled, then discharging supernatant fluid, and passing through a filter device, wherein the precipitate of molybdenum sulfide can be recycled after collection treatment; and adding a mixed coagulant till the pH value of the obtained acid solution is neutral, stirring for removing redundant sulfide ions, standing for 2-5 min till the precipitate is settled, and then discharging the supernatant fluid for ensuring water quality of outlet water. The method for the treatment of the wastewater containing the heavy metal molybdenum has the prominent advantages of good treatment effect, simple treatment equipment, low treatment cost, recycling and utilization of the metal molybdenum and the like.

There is described a process for treatment of a fluid comprising an oxidizable contaminant. The process comprises the step of contacting the wastewater with a combination of: (i) a sulfide, (ii) a complex of Fe(III) and a chelating agent, and (iii) an oxidant. It has been discovered that of treatment of a fluid containing an oxidizable contaminant employing iron(III)-chelates as the Fenton catalyst may be significantly improved by including a sulfide in the reaction scheme. As described herein, by employing sulfide ion, the present inventors have been able to: (i) increase the rate of iron recycling from minutes or hours to a few seconds, and (ii) destroy benzene in an oil and gas refinery (OGR) wastewater in less than one minute. It is believed that these findings in OGR wastewater can be extended to other fluids containing other oxidizable contaminants.

The invention discloses a lithium sulfur battery. The lithium sulfur battery comprises a sulfur electrode, a metallic lithium electrode and a diaphragm and an electrolyte which are arranged between the sulfur electrode and the metallic lithium electrode. The lithium sulfur battery is characterized in that the sulfur electrode is modified by a graphene oxide thin film, and the sulfur electrode is prepared according to the following steps of: grinding and mixing a carbon sulfur compound, a conductive agent and an adhesive according to proportions, dissolving the obtained materials in N-methyl pyrrolidone to prepare paste, applying the paste onto a current collector, and drying the current collector to prepare the sulfur electrode for modification; preparing graphene oxide, and dissolving the graphene oxide in ethanol, wherein the concentration is 0.5-5 mg/mL; and uniformly adding the ethanol solution of the graphene oxide onto the surface of the modified sulfur electrode dropwise, and drying the surface of the modified sulfur electrode. By the graphene oxide thin film prepared according to the invention, polysulfide ions can be effectively bound and are greatly prevented from diffusing to the outside of the sulfur electrode, meanwhile, lithium ion transmission cannot be blocked, thus, oxidation shuttle effect in the lithium sulfur battery is suppressed, and the problem that the capacity is reduced dramatically due to the loss of active substance sulfur is solved.

The invention provides a fast sulfide ion test method. The method uses a property of ANS that the fluorescence of 4-Amino-1-Naphthalene sulfonate (ANS) can be effectively quenched by MnO2 nano-material to prepare the ANS/MnO2 composite system. When tiny portion of S<2-> is added in the system, because the oxidation-reduction reaction occurs between the S<2-> and MnO2 to generate divalent manganese ions in the solution, thus enhancing the fluorescence intensity of the ANS, and the increase of the fluorescence intensity is in a linear relationship with the S<2-> ions concentration, thus achieving the test of S<2-> ion. Compared with prior art the method has the advantages of being simple in operation and being able to test the S<2-> ion in a fast and real time mode.

The invention discloses a complex for rapidly detecting sulfide ions. The complex is a coumarin derivative and copper ion complex, and is applied as a sulfide ion fluorescent sensor. When being used for detecting sulfide ions in an aqueous solution as the fluorescent sensor, the complex shows obvious fluorescence enhancement response, the response speed is fast, and the real-time detection on the sulfide ions can be realized; the detection sensitivity is high, the detection limit is low up to 90nM; the concentration of sulfide ions in a to-be-detected sample can be accurately quantitatively analyzed by utilizing a standard curve; the complex has superhigh selectivity on the sulfide ions, and has almost no interference to other common negative ions; the complex has good biocompatibility and can be successfully applied for fluorescence imaging analysis of the sulfide ions in biocells; and both the fluorescence spectrum and ultraviolet-visible absorption spectrum are responded, and the double-channel detection on the sulfide ions can be realized.

The invention discloses a sample treatment method for testing chloride ions in cement through an ion selective electrode method. The method adopts a CISA solution for being directly mixed with an acid-soluble sample, and can be used for eliminating interferences of hydroxide ions, ammonia water, thiosulphate ions, bromide ions, sulfide ions, iodide ions, cyanide ions and the like, improving the test repeatability and accuracy, protecting a membrane of a chloride ion selective electrode to the maximum extent and prolonging the service life of the electrode. Therefore, the method for testing the chloride ion content through the ion selective electrode method by adding the CISA solution is suitable for testing cement materials with complex base body ingredients and also is suitable for testing the content of chloride ions in other building materials.

The invention discloses a sulfide ion detection method based on a Ce(III)/AgNCs composite nano cluster material. Ce(III) ions can effectively enhance fluorescence emission of AgNCs, so as to form a Ce(III)/AgNCs composite system. When a trace of S<2-> is added to the system, S<2-> reacts with Ag atoms in the Ce(III)/AgNCs composite system, consequently, an original structure of the Ce(III)/AgNCs composite system is damaged, then the fluorescence strength of the Ce(III)/AgNCs composite system is eliminated, the eliminated fluorescence strength and concentration of S<2-> ions are in a linear relationship, so that the S<2-> ion detection method is created. The method is easy to operate, and can detect a trace of S<2-> rapidly in real time.

The invention discloses a preservation method of trace divalent sulfide ions in a water sample. The preservation method comprises the following operating steps: collecting a water sample containing divalent sulfide ions, immediately adding sodium hydroxide into the water sample until the concentration of hydroxy radicals in the water sample reaches 0.1-0.2 mol/L, and leaving to stand for no more than 24 h' s preservation at the room temperature. The invention further discloses an automatic analysis method of trace divalent sulfide ions in the water sample; the automatic analysis method uses analytical instruments comprising a first low pressure pump, a second low pressure pump, an injection valve, a first mixer, a second mixer, a reactor, an optical flow-through cell, an optical detector and a computer processing system and further comprises the following steps: (1) determining a base line; (2) determining a spectrogram of divalent sulfide ions in a test sample; (3) drawing a standard work curve; (4) calculating the concentration of divalent sulfide ions to be measured in the test sample according to the peak height value of the spectrogram of the divalent sulfide ions and the regression equation of the working curve. According to the preservation method and the automatic analysis method of trace divalent sulfide ions in the water sample, provided by the invention, preservation operations of divalent sulfide ions in the water sample are simplified, and low-cost automatic analysis of divalent sulfide ions is also realized.

The invention relates to a deposition method of a multi-section camium sulfide thin film, at least comprising the following steps of: placing a substrate containing a high-absorbing layer in a chemical bath with the contents of first sulfide ions and first cadmium ions for depositing a first camium sulfide layer on the light-absorbing layer of the substrate; and placing the substrate in another chemical bath with the contents of second sulfide ions and second cadmium ions for depositing a second camium sulfide layer on the first camium sulfide film so that the concentration ratio different between concentration ratio of the first sulfide ions to the first cadmium ions and the concentration ratio of the second sulfide ions to the second cadmium ions is above 10.

The present invention provides a method for quantitatively determining hydrogen sulfide or sulfide ions conveniently with high sensitivity, which comprises adding to a sample containing hydrogen sulfide or sulfide ions, metal ions or a compound which liberates said metal ions and a metal indicator which reacts with the metal ions and resultingly undergoes color development, wherein the color development is accelerated or inhibited by the hydrogen sulfide or sulfide ions; and measuring the degree of color development of the metal indicator. The present invention further provides a method for quantitatively determining a specific substance, which comprises adding to a sample containing a specific substance, a component which acts on the specific substance so that the specific substance forms hydrogen sulfide or sulfide ions, metal ions or a compound which liberates said metal ions, and a metal indicator which reacts with the metal ions and resultingly undergoes color development, wherein the color development is accelerated or inhibited by the hydrogen sulfide or sulfide ions; and measuring the degree of color development of the metal indicator.

The invention relates to a method for preparing a trace element fertilizer containing organic titanium through a microwave chelating process. The method is characterized by comprising the following steps of: preparing a newly precipitated metatitanic acid which does not contain chloride and sulfide ions and can be dissolved in citric acid by neutralizing an iced solution of a titanium salt with an alkali; using the newly precipitated metatitanic acid which does not contain the chloride and sulfide ions and can be dissolved in the citric acid to substitute chlorides and sulfates of titanium for being used as a raw material for synthesizing citric acid titanium without the chloride and sulfide ions; taking the newly precipitated metatitanic acid which does not contain the chloride and sulfide ions and can be dissolved in the citric acid as a titanium source, taking citric acid as an acid solvent and a chelating agent, and synthesizing the citric acid titanium without the chloride and sulfide ions through a microwave hot-melting chelating process; and preparing the trace element fertilizer containing the organic titanium by performing microwave hot-melting (dissolving) chelating on the acidic citric acid titanium and basic salts of copper, zinc, iron, manganese and molybdenum. According to the method disclosed by the invention, a titanium element can be used for promoting the absorption of trace elements and the operation of crops, promoting the growth of the crops and improving the yield and quality of the crops, and all the advantages and effects of the trace elements can be fully played.

Provided is an ionic conductor with which adhesion between particles can be enhanced simply by pressure-molding a powder without using sulfide ionic conductors and without performing firing or vapor deposition, and which can exhibit a high lithium ionic conductivity. This ionic conductor contains, in addition to an oxide lithium ionic conductor, a complex hydride.

A process is presented where a feed stream containing a hydrogen sulfide and another feed component is introduced into an absorber that the feed stream flows upward from the bottom of the absorber andcontacts a liquid treatment solution, where the liquid treatment solution contains a sulfur dye catalyst. The hydrogen sulfide is absorbed into the liquid treatment solution and converted into sulfide ions. The other feed component is removed from the absorber vessel substantially free of the hydrogen sulfide and a spent treatment solution is also removed from the absorber vessel and fed to an oxidation vessel where it is contacted with an oxygen containing gas causing the sulfide ions to oxidize to thiosulfate and converting the spent sulfur dye catalyst to regenerated sulfur dye catalyst. The thiosulfate is recovered, and the regenerated sulfur dye catalyst can be recycled as part of the liquid treatment solution.