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Title: Method of preparing electrodes with porous current collector structures and solid reactants for secondary electrochemical cells

Particulate electrode reactants, for instance transition metal sulfides for the positive electrodes and lithium alloys for the negative electrodes, are vibratorily compacted into porous, electrically conductive structures. Structures of high porosity support sufficient reactant material to provide high cell capacity per unit weight while serving as an electrical current collector to improve the utilization of reactant materials. Pore sizes of the structure and particle sizes of the reactant material are selected to permit uniform vibratory loading of the substrate without settling of the reactant material during cycling.
Inventors:
 [1];  [2]
  1. (Park Forest, IL)
  2. (Riverdale, IL)
Issue Date:
OSTI Identifier:
862452
Assignee:
United States of America as represented by United States Energy (Washington, DC) ANL
Patent Number(s):
US 3933520
Contract Number:
W-31109-ENG-38
Research Org:
Argonne National Laboratory (ANL), Argonne, IL
Country of Publication:
United States
Language:
English
Subject:
method; preparing; electrodes; porous; current; collector; structures; solid; reactants; secondary; electrochemical; cells; particulate; electrode; instance; transition; metal; sulfides; positive; lithium; alloys; negative; vibratorily; compacted; electrically; conductive; porosity; support; sufficient; reactant; material; provide; cell; capacity; unit; weight; serving; electrical; improve; utilization; materials; pore; sizes; structure; particle; selected; permit; uniform; vibratory; loading; substrate; settling; cycling; reactant material; metal sulfides; electrode reactant; positive electrodes; negative electrodes; metal sulfide; secondary electrochemical; current collector; positive electrode; electrochemical cells; negative electrode; electrochemical cell; electrically conductive; transition metal; particle size; pore size; electrical current; lithium alloy; pore sizes; particle sizes; unit weight; vibratory loading; reactant materials; collector structures; collector structure; particulate electrode; solid reactants; electrode reactants; /429/