All-solid-state polymer lithium battery

All-solid-state polymer lithium battery

  • CN 105,742,713 B
  • Filed: 12/12/2014
  • Issued: 08/28/2020
  • Est. Priority Date: 12/12/2014
  • Status: Active Grant
First Claim
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1. An all-solid-state polymer lithium battery comprises a negative plate, a positive plate and an all-solid-state polymer electrolyte membrane arranged between the negative plate and the positive plate, and is characterized in that:

  • the negative plate is made of Li-Cs alloy which is used as a negative active material and a current collector at the same time;

    the mass content proportion of lithium metal in the Li-Cs alloy is 70-99.9%, and the mass content proportion of Cs metal is 0.1-30%;

    the positive plate comprises a positive current collector and a positive material layer coated on the positive current collector, wherein the positive material layer comprises a positive active substance, a conductive material and an all-solid-state polymer electrolyte;

    wherein, the all-solid polymer electrolyte has the same components as the all-solid polymer electrolyte membrane, and the positive active material is a metal oxide containing lithium;

    the conductive material comprises one or more of graphite, acetylene black, conductive fibers, metal powder and organic conductive polymers;

    the increase rate of the interface resistance of the all-solid-state polymer lithium battery after 500 cycles is less than 5%.

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