Design micro-nano structure and composite conductive carbon materials have important influence to improve the stability of structure and accelerate electron transportation. Here, two identified manganese carbonate with spherical and ellipsoidal shape were modified by graphene and carbon nanotubes, exhibiting high discharge capacity and excellent long-term cyclic performance as anodes for lithium storage. The graphene/ellipsoidal MnCO₃ sample delivers a reversible capacity of 1110 mAh g⁻¹ at 1000 mA g⁻¹ after 500 cycles. The outstanding electrochemical performance and facile synthesize route suggest the validity of our method, and enable the modified MnCO₃ composites to be promising anodes for LIBs.

设计微纳结构和复合导电碳材料对提高结构稳定性和加速电子传输具有重要影响。在这里，通过石墨烯和碳纳米管对两种已鉴定的球形和椭圆形碳酸锰进行了改性，表现出高放电容量和出色的长期循环性能作为锂存储负极。石墨烯/椭圆体 MnCO ₃样品在 500 次循环后在 1000 mA g ^{-1下提供 1110 mAh g -1}的可逆容量。优异的电化学性能和简便的合成路线表明了我们方法的有效性，并使改性的 MnCO ₃复合材料成为有前途的 LIB 负极。