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Anode materials for lithium ion batteries and methods of making and using same

專利號
US11177471B2
公開日期
2021-11-16
申請人
JOHNSON MATTHEY PUBLIC COMPANY LIMITED（GB London）
發(fā)明人
Fuxia Sun
IPC分類
H01M4/36; H01M4/62; H01M10/0525; H01M4/134; H01M4/38; C22C24/00; C22C28/00; H01M4/02
技術(shù)領(lǐng)域
alloy,no3,silicon,ee,wt,electrode,lipaa,lithium,metal,coated
地域： London

摘要

An electrochemically active material includes a silicon alloy material having the formula: SiwM1xCyOz, where w, x, y, and z represent atomic % values and w+x+y+z=1; M1 comprises a transition metal; w>0; x>0; y≥0; and z≥0. The electrochemically active material also includes a metal-based material having the formula: M2aObAc, where a, b, and c represent atomic % values and a+b+c=1; M2 comprises a metal; A is an anion; a>0; b≥0; and c≥0.

說明書

CA. SMG-N-HE1 A graphite available from Hitachi Chemical Co. Ltd., Tokyo, Japan. LiPAA A binder solution was prepared as follows: 35 wt % aqueous solution of polyacrylic acid (PAA) (250K MW, available from Sigma-Aldrich), deionized water, and lithium hydroxide monohydrate (available from Sigma- Aldrich) were mixed in a 1.00:2.48:0.20 weight ratio, and placed in a shaker for 5 h. The resulting solution is a 10 wt % lithium polyacrylate (LiPAA) aqueous binder solution. Copper foil A 15 μm copper foil available from Itochu Metals Co., Tokyo, Japan. Lithium foil Lithium foil counter/reference electrode available from Rockwood Lithium, Frankfurt am Main, Germany. Electrolyte The electrolyte contains 10 wt % fluoroethylene carbonate (FEC) and 90 wt % Selectilyte LP 57 (1M lithium hexofluorophosphate (LiPF6) in ethylene carbonate:ethyl methyl carbonate (EC:EMC) 30:70 w/w solution, available from BASF, Independence, OH).
X-Ray Diffraction Test Methods

The following test methods were employed in the evaluation of the examples that follow.

X-Ray Diffraction (XRD)

權(quán)利要求

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