Enhancing the Areal Capacity and Stability of Cu₂ZnSnS₄ Anode Materials by Carbon Coating: Mechanistic and Structural Studies During Lithiation and Delithiation.

ABSTRACT: The widespread use of energy storage technologies has created a high demand for the development of novel anode materials in Li-ion batteries (LIBs) with high areal capacity and faster electron-transfer kinetics. In this work, carbon-coated Cu₂ZnSnS₄ with a hierarchical 3D structure (CZTS@C) is used as an anode material for LIBs. The CZTS@C microstructures with enhanced electrical conductivity and improved Li-ion diffusivity exhibit high areal and gravimetric capacities of 2.45 mA h/cm² and 1366 mA h/g, respectively. The areal capacity achieved in the present study is higher than that of previously reported CZTS-based materials. Moreover, in situ X-ray diffraction results show that lithium ions are stored in CZTS through the insertion reaction, follow

SUBMITTER: Venugopal B 

PROVIDER: S-EPMC8943806 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature