Nickel metaphosphate micro-nanomaterial as well as preparation method and application thereof
A nickel metaphosphate micro-nano material technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of potential application research limitations, unreported, complex reaction systems, etc., to achieve large-scale production and application, significant pseudocapacitive properties, and the effect of simple experimental manipulations
Active Publication Date: 2016-12-07
NINGBO UNIVERSITY OF TECHNOLOGY
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However, due to the incomplete development of transition metal metaphosphate, it is difficult to obtain transition metal metaphosphate micro-nano materials with specific stoichiometric composition and rich morphology, so the follow-up research on its potential application has also been obtained. extremely restrictive
[0003] At present, transition metal metaphosphoric acid compounds can be produced mainly by heating highly toxic phosphorus, phosphorous acid or phosphoric acid and metal salts, but the products are glassy or polymeric, without specific crystal morphology and microstructure characteristics
There have been reports about the preparation of metaphosphoric acid micro-nano materials in the prior art, such as literature (Inorg. Phosphoric acid and nickel chloride, manganese chloride conversion to NiHPO 3 ˙H 2 O and MnHPO 3 ˙H 2 O crystallizes, but its reaction time is longer (≥3 days)
Another example is that in the document (Cryst.GrowthDes.2008,8,3636), it is disclosed that nickel sulfa
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[0042] Example 1:
[0043] Mix 1 mmol of nickel chloride, 2.5 mmol of ammonium fluoride and 5 mmol of urea, stir until dissolved in 30 mL of deionized water, and then put in an area of 2*3 cm 2The carbon cloth, let stand for 2h for later use. The carbon cloth was refluxed in concentrated nitric acid for 2 hours in advance, and then taken out and washed and dried in vacuum. The resulting reaction substrate was then transferred to a PTFE liner, which was sealed into a stainless steel mold, heated from room temperature, and heated at 110° C. for 2 h. After the reaction is completed, it is naturally cooled to room temperature, the carbon cloth is taken out from the polytetrafluoroethylene liner, ultrasonically cleaned with deionized water and ethanol, and dried to obtain a nickel-containing precursor / carbon cloth composite.
[0044] The nickel-containing precursor / carbon cloth composite prepared above was put into one side of an alumina crucible, and 5 mmol of sodium hypophosp...
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The invention relates to a nickel metaphosphate micro-nanomaterial as well as a preparation method and an application thereof. The micro-nanomaterial has a nano sheet array structure, and the lamellar thickness of nano sheets is less than 20nm. The nickel metaphosphate micro-nanomaterial is prepared through the preparation method comprising the following steps: dissolving a soluble nickel salt and weak base molecules in a solvent to react together with carbon cloth to obtain a nickel-containing precursor/carbon cloth complex, and then performing heat treatment on the nickel-containing precursor/carbon cloth complex and a phosphate compound in an inert atmosphere to obtain the nickel metaphosphate micro-nanomaterial. Based on a structure duplication thought, the invention adopts a two-step method to achieve preparation of a micro-nanostructure and growth of a nickel metaphosphate crystal phase, respectively, the preparation of the nickel metaphosphate micro-nanomaterial with a single crystal phase is achieved, the experiment operation is simple and safe, and scale production and application can be achieved. The prepared nickel metaphosphate micro-nanomaterial has a significant pseudocapacitance characteristic, and the specific capacitance is greater than 2000F/g when the discharge current is 1A/g, so that the nickel metaphosphate micro-nanomaterial has a good potential application prospect in the aspect of electrochemical energy storage.
Description
technical field [0001] The invention relates to a nickel metaphosphate micro-nano material and a preparation method and application thereof, belonging to the technical field of inorganic nano-materials. Background technique [0002] In recent years, metal phosphate compounds with open micro-nano structures have broad application prospects in the fields of ion exchange, adsorption, separation, and catalysis, and have always been a research hotspot for researchers. However, due to the incomplete development of transition metal metaphosphate, it is difficult to obtain transition metal metaphosphate micro-nano materials with specific stoichiometric composition and rich morphology, so the follow-up research on its potential application has also been obtained. Extremely restrictive. [0003] At present, transition metal metaphosphoric acid compounds can be produced mainly by heating highly toxic phosphorus, phosphorous acid or phosphoric acid and metal salts, but the products are...
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Login to view more IPC IPC(8): C01B25/44
CPCC01B25/44C01P2002/72C01P2004/03C01P2004/04C01P2006/40
Inventor 刘乔杨为佑
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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