Abstract
A novel silicon-based glassy composite anode material with high initial coulombic efficiency and long cycling performance for lithium-ion batteries was synthesized by a wet mechanochemical reduction method. The in situ formed Si particles with size of 5–10 nm were uniformly distributed in the glassy matrices formed by B 2O 3 and P 2O 5. The as-prepared composite electrode revealed an initial charge and discharge capacity of 432.7 and 514.4 mAh g − 1 , respectively, with an initial coulombic efficiency of 84%. After 100 cycles, the reversible capacity retention rate was still up to 97%, meaning a favorable cycling stability.
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