Positive pole piece and lithium ion battery

Positive pole piece and lithium ion battery

The invention provides a positive pole piece and a lithium ion battery, the positive pole piece comprises a current collector and an active material layer arranged on at least one side surface of the current collector, and a safety coating is arranged between the current collector and the active mat...

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Hauptverfasser: LIU RONGJIANG, HUANG BINBIN, PAN YUYI
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator LIU RONGJIANG
HUANG BINBIN
PAN YUYI
description The invention provides a positive pole piece and a lithium ion battery, the positive pole piece comprises a current collector and an active material layer arranged on at least one side surface of the current collector, and a safety coating is arranged between the current collector and the active material layer; the safety coating comprises an inorganic filler, the chemical formula of the inorganic filler is Fe1-x-yMnxMyPO4, x is more than or equal to 0 and less than or equal to 1, y is more than or equal to 0 and less than or equal to 0.1, x + y is more than or equal to 0 and less than or equal to 1, and M is any one or a combination of at least two of Sn, Cr, Mg, Ti, Al, Zn, W, Nb or Zr. Part of phosphate materials in the safe coating can be converted into electrochemical active substances, and waste of lithium resources is avoided. 本发明提供了一种正极极片和锂离子电池，所述正极极片包括集流体和设置在所述集流体至少一侧表面的活性物质层，所述集流体与所述活性物质层之间设置有安全涂层；所述安全涂层包括无机填料，所述无机填料的化学式为Fe1-x-yMnxMyPO4，其中，0≤x≤1，0≤y≤0.1，0≤x+y≤1，M选自Sn、Cr、Mg、Ti、Al、Zn、W、Nb或Zr中的任意一种或至少两
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Positive pole piece and lithium ion battery
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