Flower-to-petal structural conversion and enhanced interfacial storage capability of hydrothermally crystallized MnCO3via the in situ mixing of graphene oxide

摘要: Graphene oxide (GO) possesses high electron conductivity and good chemical-binding ability thus can be used as a multifunctional additive for the preparation application of electrode materials. As hydrothermal crystallization MnCO3 herein, absence GO causes formation flower-like architectures composed secondary spindles, while presence induces flower-to-petal structural conversion results in spindle–GO composites. When applied Li-ion battery anodes, composite delivers an initial coulombic efficiency (CE) 71% reversible capacity 1474 mA h g−1 400th cycle, much higher than those flowers (the CE ∼ 58%, 1095 g−1) operated under same conditions. In particular, combination discharging behavior its differential profile has been successfully to estimate interfacial contribution fraction (42%) whole (i.e., enhanced by situ mixing 8.3 wt% GO.