Ferrous (II) phosphate powders, lithium iron phosphate powders for li-ion battery and methods for manufacturing same

A lithium metal phosphate, lithium ion battery technology, applied in phosphates, chemical instruments and methods, phosphorus oxyacids, etc., can solve the problems of poor lithium ion capability, low conductivity, low capacitance, etc.

Active Publication Date: 2019-12-31
周丽新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared to LiFePO 4 , although LiMnPO 4 、LiNiPO 4 and LiCoPO 4 Has a high theoretical mass-energy density (mass-energy density), but LiMnPO 4 、LiNiPO 4 and LiCoPO 4 The conductivity is low, and transport LiMnPO 4 、LiNiPO 4 and LiCoPO 4 Li-ion capacity is poor, leading to the use of LiMnPO 4 、LiNiPO 4 and LiCoPO 4 The battery actually has a lower capacitance

Method used

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  • Ferrous (II) phosphate powders, lithium iron phosphate powders for li-ion battery and methods for manufacturing same
  • Ferrous (II) phosphate powders, lithium iron phosphate powders for li-ion battery and methods for manufacturing same
  • Ferrous (II) phosphate powders, lithium iron phosphate powders for li-ion battery and methods for manufacturing same

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Embodiment Construction

[0082] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0083] The present invention is explained as follows. Those skilled in the art can understand that the terms in this specification are only descriptive rather than limiting the present invention, and the present invention can also be improved and changed according to this specification. Accordingly, the invention, within the scope of the appended claims, is not to be limited by the description in the specification.

[0084] analyze

[0085] The shapes of the divalent metal phosphate powder and lithium metal phosphate powder obtained in Example (Ex) below were observed with a scanning electron microscope (SEM) (Hitachi S-4000).

[0086] In addition, the divalent metal phosphate powder and lithium metal phosphate powder ...

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Abstract

Ferrous (II) phosphate powders, lithium iron phosphate powders for a Li-ion battery and methods for manufacturing the same are provided. The ferrous (II) phosphate powders are represented by the following formula (I): (Fel-xMx)3(PO4)2*yH2O(I), wherein M comprises at least one metal selected from a group consisting of Mn, Co, Ni, Cu, Cr, V, Mo, Ti, Zn, Zr, Tc, Ru, Rh, Pd, Ag, Cd, Pt, Au, Al, Ga, In, Be, Mg, Ca, Sr, B and Nb, x is larger than 0.5 and smaller than or equal to 1, y is an integer from 0 to 8, the ferrous (II) phosphate powders are composed of a plurality of sheet-shaped powder bodies, and the length of each sheet-shaped powder body ranges from 50 nm to 10 [mu] m.

Description

technical field [0001] The invention relates to a divalent metal phosphate powder and lithium metal phosphate powder for lithium ion batteries and a preparation method thereof. Specifically, the present invention relates to a divalent metal phosphate powder for preparing a lithium ion battery having a large length / thickness ratio, a lithium metal phosphate powder prepared therefrom, and a preparation method thereof. Background technique [0002] With the development of various portable electronic devices, since batteries are the main power source of portable electronic devices, energy storage technology has gained more and more attention. Among the commercially available batteries, the smaller secondary batteries are particularly useful as the main power supply devices for portable electronic devices such as mobile phones and notebook computers. In addition, secondary batteries can be used not only in portable electronic devices, but also in electric vehicles. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/58H01M4/525H01M10/0525C01B25/26
CPCH01M4/5825H01M4/525H01M10/0525C01B25/265Y02E60/10
Inventor 周丽新彭绍玮张凯筑
Owner 周丽新
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