Copper Antimonide Nanowire Array Lithium Ion Anodes Stabilized by Electrolyte Additives.
Nanowires of electrochemically active electrode materials for lithium ion batteries represent a unique system that allows for intensive investigations of surface phenomena. In particular, highly ordered nanowire arrays produced by electrodeposition into anodic aluminum oxide templates can lead to new insights into a material's electrochemical performance by providing a high-surface-area electrode with negligible volume expansion induced pulverization. Here we show that for the Li-CuxSb ternary system, stabilizing the surface chemistry is the most critical factor for promoting long electrode life. The resulting solid electrolyte interphase is analyzed using a mix of electron microscopy, X-ray photoelectron spectroscopy, and lithium ion battery half-cell testing to provide a better understanding of the importance of electrolyte composition on this multicomponent alloy anode material.
Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States.
Everett D
ED
Jackson
Department of Chemistry, Colorado State University , Fort Collins, Colorado 80523, United States.
Amy L
AL
Prieto
copper antimonide; fluoroethylene carbonate; lithium ion battery; nanowire array; solid electrolyte interface; vinyl carbonate