Abstract:Iron pyrite (p-FeS2) has been widely utilized as a commercial cathode material for lithium ion batteries (LIBs) for 30+ years, due to its high charge capacity, natural abundance, low cost, and non-toxicity. Industrialized versions include both non-rechargeable Li/FeS2 batteries at ambient temperatures (-40 – 60 °C) and rechargeable Li/FeS2 batteries at high temperatures (400 – 450 °C). However, FeS2 cathodes suffer from very poor cyclability at room temperature. Four specific reasons have been identified for t… Show more
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