Accelerated formation and increased performance in chemically pre-formed (CPF) iron negative electrodes
First Claim
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1. A electrode which has not been subject to a charge-discharge cycle, comprising an iron active material, a polyvinyl alcohol binder and sulfur, which electrode is prepared by a process comprising:
- i) fabricating an electrode comprising an iron active material, polyvinyl alcohol and sulfur, andii) treating the surface of the electrode with an oxidant to thereby create an oxidized surface prior to the electrode being subjected to a charge-discharge cycle.
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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
8 Claims
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1. A electrode which has not been subject to a charge-discharge cycle, comprising an iron active material, a polyvinyl alcohol binder and sulfur, which electrode is prepared by a process comprising:
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i) fabricating an electrode comprising an iron active material, polyvinyl alcohol and sulfur, and ii) treating the surface of the electrode with an oxidant to thereby create an oxidized surface prior to the electrode being subjected to a charge-discharge cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification