Conductivity and Pseudocapacitance Optimization of Bimetallic Antimony-Indium Sulfide Anodes for Sodium-Ion Batteries with Favorable Kinetics.

ABSTRACT: Metal sulfides show promise for use in alkali-ion batteries because of their high theoretical capacities. However, their poor cycling stability and rate performance hinder their further development. To avoid these issues, In₂S₃ into Sb₂S₃ is introduced to improve its electrochemical properties by optimizing its crystal structure and sodium storage mechanism. A heterostructure composed of In₂S₃ and Sb₂S₃ shows a unique morphology of formicary microspheres, which provide abundant channels for fast transfer of sodium ions, large surface area for a high pseudocapacitance effect, and enough voids to relieve volume expansion. A sodium-ion battery containing the bimetallic sulfide anode exhibits a high reversi

SUBMITTER: Huang Y 

PROVIDER: S-EPMC6193174 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature