Abstract
Ferrous carbonate as an anode material for lithium ion batteries has been extensively investigated due to its facile synthesis and high theoretical capacity. However, the low intrinsic electronic conductivity and large structural changes are the main reasons for the poor electrochemical performance of ferrous carbonate. To solve above the issues, we design a novel method (copper doping) to enhance the lithium ion storage capability (718.2 mAh g−1 at 0.2 A g−1 after 100 cycles) and interface dynamics of ferrous carbonate. This work may provide a promising strategy for improving the electrochemical performance of transition metal carbonates.
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