Pulverization-Tolerance and Capacity Recovery of Copper Sulfide for High-Performance Sodium Storage.

ABSTRACT: Finding suitable electrode materials is one of the challenges for the commercialization of a sodium ion battery due to its pulverization accompanied by high volume expansion upon sodiation. Here, copper sulfide is suggested as a superior electrode material with high capacity, high rate, and long-term cyclability owing to its unique conversion reaction mechanism that is pulverization-tolerant and thus induces the capacity recovery. Such a desirable consequence comes from the combined effect among formation of stable grain boundaries, semi-coherent boundaries, and solid-electrolyte interphase layers. The characteristics enable high cyclic stability of a copper sulfide electrode without any need of size and morphological optimization. This work provides a key finding on high-performance conve

SUBMITTER: Park JY 

PROVIDER: S-EPMC6662052 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature