Cathode including a non fluorinated linear chain polymer as the binder,

USH452H · kind H · statutory invention registration

Assignee

• The United States of America as represented by the Secretary of the Army · US

Inventors

• Edward J. Plichta · Howell, US
• Mark Salomon · Red Bank, US

Key dates

• Grant date: Apr 5, 1988

Classification

• Technology area (CPC —): General

Abstract

A cathode suitable for use in a lithium electrochemical cell is made from a ixture of active cathode material, carbon, and non fluorinated linear chain polymer by a method including the steps ofPA0 (A) dissolving the non fluorinated linear chain polymer in a non polar solvent at a temperature near the melting point of the polymer,PA0 (B) adding the active cathode material and carbon and evaporating the solvent, andPA0 (C) grinding the dried mixture into a fine powder and making it into a cathode by pressing the powdered mixture onto both sides of an expanded metal screen and then cutting to the desired dimensions. The cathode can be combined with lithium as the anode and a solution of 0.8 mol dm.sup.-3 LiAlCl.sub.4 in a mixed organic solvent of 24 mass percent 4-butyrolactone in 1, 2 dimethoxyethane as the electrolyte to provide a mechanically stable, relatively inexpensive lithium electrochemical cell having good cell performance.