Preparation method of lithium ion battery anode materials BiPO4 based on chemical conversion reaction and lithium ion battery for manufacturing

A technology for lithium ion batteries and cathode materials, which is applied in chemical instruments and methods, battery electrodes, inorganic chemistry, etc., can solve problems such as the application of lithium ion batteries that have not been reported, and achieve the effects of low cost, good application prospects and environmental friendliness.
CN102862967AInactive Publication Date: 2013-01-09XIANGTAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIANGTAN UNIV
Publication Date
2013-01-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of lithium ion battery anode materials BiPO4 based on a chemical conversion reaction and a lithium ion battery for manufacturing. The invention has the technical effects that a preparation method of lithium ion battery anode materials BiPO4 based on a chemical conversion reaction and a lithium ion battery for manufacturing are provided, wherein the anode materials BiPO4 include a hexagonal crystal type containing crystal water, a low-temperature single crystal type without crystal water, and a high-temperature single crystal type. The anode materials BiPO4 have a theoretical output voltage of about 3.1V, a theoretical specific discharge capacity of 265.5mAh g<-1>, a theoretical mass energy density of 830.5Whkg<-1>, and a volume energy density of 5253.1Wh L<-1>; and all first specific discharge capacities under the multiplying power of 0.1C are greater than 240mAhg<-1>. According to the preparation method of lithium ion battery anode materials BiPO4 based on a chemical conversion reaction, the preparation process is simple and easy to control, the raw materials are low in cost, and the anode materials are environment-friendly, can be produced industrially on a large scale, and are potential novel anode materials. The prepared three different crystal types of anode materials BiPO4 can be applied to lithium ion batteries, thereby having an excellent application prospect.
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Description

technical field

[0001] The invention relates to a lithium ion battery cathode material, which belongs to the field of lithium ion battery cathode materials and electrochemistry. Background technique

[0002] As a new energy source, lithium-ion batteries have attracted much attention due to their high energy density, high voltage, high reversible capacity, and high cycle performance. They are the leading power source in the 21st century, and their application fields are constantly expanding. However, the competition in the lithium-ion battery industry is very fierce. Finding high-performance, low-cost new electrode materials is a powerful means to further reduce battery costs and enhance competitiveness, and positive electrode materials account for a large proportion of battery manufacturing costs, about 40%. , therefore, cathode materials are the focus of research on lithium-ion batteries.

[0003] At present, almost all commercial lithium-ion battery cathode materials are ...

Claims

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