US 2016/0254544 A1Published application

LIFePO4 FLAKES FOR LI-ION BATTERY AND METHOD FOR MANUFACTURING THE SAME

AssigneeNational Tsing Hua University

InventorsLih-Hsin CHOU, Kuei-Chao WU

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Abstract

LiFePO4 flakes for a Li-ion battery and a method for manufacturing the same are disclosed. The LiFePO4 flakes of the present invention have a thickness of 5 nm-200 nm, and the angle between the flat surface normal of the flake and the Li-ion diffusion channel is 0°-80°. In addition, according to the present invention, the LiFePO4 flakes with short Li ion diffusion path can be prepared through a simple process. Hence, not only the charge-discharge efficiency of the Li-ion battery can be improved by use of the LiFePO4 flakes of the present invention, but also the cost of the Li-ion battery can be further reduced.

Claims21

Dependent claims

A method for manufacturing LiFePO4 flakes for a Li-ion battery, comprising the following steps:

(A) providing a mixed organic solution by reflux, which comprises Li, Fe, and P, wherein the Li contained in the mixed organic solution is derived from a Li-containing precursor or a P and Li-containing precursor, the Fe contained in the mixed organic solution is derived from an Fe-containing precursor or a P and Fe-containing precursor, and the P contained in the mixed solution is derived from a P-containing precursor, a P and Li-containing precursor, or a P and Fe-containing precursor;
(B) heating the organic mixed solution to obtain preliminary products;
and
(C) heat-treating the preliminary products to obtain LiFePO4 flakes.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/152,023Filed 11 May 2016
Priority: TW 10012179122 Jun 2011
Published: 1 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H01M 4/5825
Of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures,…:…
B82Y 30/00
Nanotechnology for materials or surface science
B82Y 40/00
Manufacture or treatment of nanostructures
C01B 25/45
Phosphates: containing plural metal, or metal and ammonium

Family

Application13/529,221Division · filed 21 Jun 2012
Application15/152,023Division
US 2012/0328947 A1Published application
US 9,368,794 B2Related patent
US 2016/0254544 A1This patent

From the US filing history. Foreign family members aren’t listed.

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