Accelerated formation and increased performance in chemically pre-formed (CPF) iron negative electrodes
First Claim
1. An electrode which has not been subject to a charge-discharge cycle, comprising an iron active material, which electrode surface has an oxidized iron surface and areas of interparticle contact that are in an oxidized state different from the oxidized iron surface.
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Abstract
Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with an oxidant to thereby create an oxidized surface. The resulting iron electrode is preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron active material in the same oxidation state as in discharged iron negative electrodes active material.
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Citations
14 Claims
- 1. An electrode which has not been subject to a charge-discharge cycle, comprising an iron active material, which electrode surface has an oxidized iron surface and areas of interparticle contact that are in an oxidized state different from the oxidized iron surface.
Specification