Reversible Cu₄O₃ Phase Formation in CuO Nanoplate Anodes for High Capacity and High Coulombic Efficiency

Conversion materials with high specific capacity are of interest to improve energy density of Li‐ion batteries. Here, we present results concerning hydrothermally synthesized CuO nanoplates that exhibit high specific capacity of 800 and 698 mAh/g at C/2 and 1C rates respectively and 180 mAh/g at a high rate of 30C. The electrodes exhibit high Coulombic efficiencies of about 66% and 60% at C/2 and 1C rate respectively, these are high efficiency...