The exploration and analysis of the superfluous lithium storage capacity of a Bi2Se3-based composite†

Abstract

The development of advanced anode materials is of great significance to improve the operating efficiency of lithium-ion batteries. The Bi₂Se₃-based composites (Bi₂Se₃–CDs–Ni) prepared in this paper exhibit abnormal cyclic behavior: the capacity increases and exceeds the initial capacity. The change of lithium storage mechanism leads to an increase in capacity.