Revealing the key role of MnSiO3 in boosting the lithium storage performance of bamboo-derived anode materials

Abstract

Carbon/manganese oxide hybrid materials, as potential candidates for lithium-ion battery anode materials, have attracted extensive attention due to their abundant resources and simple preparation. However, poor rate performance, weak cycle stability, and relatively high cost still limit their further development as commercial materials for next-generation Li-ion batteries. Herein, a novel carbon/manganese oxide hybrid material was fabricated from low-cost carbonized bamboo leaves and manganese nitrate for the lithium-ion battery anode. Interestingly, an additional MnSiO3 component found in this hybrid material is able to increase the material's intrinsic conductivity for improving the charge transfer as well as to enhance the Li+ diffusion ability for accelerating the reaction kinetics. Thus, the rate capability and cycle performance of the prepared hybrid material with additional MnSiO3 have been significantly improved by 18.4 and 52.6 %, respectively, compared to hybrid material without the MnSiO3 component. Moreover, the cycle performance of this hybrid material is also superior to that of many similar carbon/silicate and carbon/manganese oxide hybrid materials. Thanks to the excellent electrochemical performance, our hybrid material has also been successfully fabricated into a lithium-ion full battery, which displays considerable energy storage performance and good practical application ability.