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Preparation of bimetallic sulfide with conductive carbon cloth as substrate and application thereof in negative pole of lithium-ion battery

A technology of conductive carbon cloth and sulfide, applied in battery electrodes, nickel compounds, electrode manufacturing, etc., can solve the problems of limited research on LIBs anode materials, and achieve the effects of simple assembly, high reproducibility, and easy operation

Active Publication Date: 2019-10-01
青岛鸿硅高沃新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, NiCo 2 S 4 Few studies have been conducted as anode materials for LIBs

Method used

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  • Preparation of bimetallic sulfide with conductive carbon cloth as substrate and application thereof in negative pole of lithium-ion battery
  • Preparation of bimetallic sulfide with conductive carbon cloth as substrate and application thereof in negative pole of lithium-ion battery
  • Preparation of bimetallic sulfide with conductive carbon cloth as substrate and application thereof in negative pole of lithium-ion battery

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Experimental program
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Embodiment 1

[0032] 1. Pretreatment of conductive carbon cloth

[0033] 1.1 Cut the conductive carbon cloth into a rectangle of 2×4cm. Use acetone, hydrochloric acid, and absolute ethanol to ultrasonically clean for 10 minutes, and dry them for later use.

[0034] The concentration of hydrochloric acid in step 1.1 is 1mol L -1 .

[0035] 2. NiCo on conductive carbon cloth 2 S 4 preparation of

[0036] 2.1 Dissolve an appropriate amount of ammonia water and o-phenanthroline in deionized water, stir evenly, add a certain proportion of cobalt nitrate hexahydrate and nickel nitrate hexahydrate, and stir evenly.

[0037] 2.2 Add an appropriate amount of thiourea to the above solution, and stir magnetically for 30 minutes.

[0038] 2.3 Transfer the solution described in 2.2 into a high-pressure reactor, and put it into the conductive carbon cloth treated in step 1.1, heat it for a certain period of time, cool it down to room temperature naturally, separate the precipitate by centrifugation...

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Abstract

The invention relates to a preparation method for directly growing a bimetallic sulfide on conductive carbon cloth and an application thereof as a negative pole of a lithium-ion battery. The materialis synthesized by a one-step hydrothermal method by taking ammonia water and phenanthroline as double templates, adding nickel nitrate hexahydrate and cobalt nitrate hexahydrate, adding thiourea as asulfur source and using conductive carbon cloth as a substrate. The material can be directly used as a negative pole of a lithium-ion battery without any binder. The material has excellent cycle performance at the current density of 1000mA.g<-1>. The preparation method of the material is simple. A battery assembly process is omitted. Mass production is facilitated.

Description

Technical field: [0001] The invention belongs to the field of new energy material technology and lithium ion battery application, in particular to NiCo on conductive carbon cloth 2 S 4 The synthesis of; also relate to the application of described material directly as lithium-ion battery negative electrode. Background technique: [0002] The theoretical specific capacity of commercial graphite anode is low (372mAh g -1 ) cannot meet the energy density requirements of high-performance batteries. The ever-increasing market demand has led to extensive research efforts aimed at exploring new electrode materials with higher capacity and long-term cycle stability. [0003] Among the various anode materials studied, electrochemically active metal oxides and sulfides have attracted extensive attention of researchers. This kind of material has a high theoretical capacity, which is 2 to 3 times higher than that of carbon / graphite materials, is cheap and environmentally friendly, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/136H01M4/1397H01M4/04H01M4/58H01M10/0525C01G53/00
CPCH01M4/136H01M4/1397H01M4/049H01M4/5815H01M10/0525C01G53/006C01P2002/72C01P2004/03C01P2004/32C01P2006/40Y02E60/10
Inventor 王磊张凯杜云梅杨宇张琦刘杰
Owner 青岛鸿硅高沃新材料科技有限公司
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