Visualization of electrode-electrolyte interfaces in LiPF6/EC/DEC electrolyte for lithium ion batteries via in situ TEM.

Zeng, Zhiyuan; Liang, Wen-I; Liao, Hong-Gang; Xin, Huolin L; Chu, Yin-Hao; Zheng, Haimei · Nano Lett · 2014

basic_science · Level V

Where this comes from

Abstract

We report direct visualization of electrochemical lithiation and delithiation of Au anodes in a commercial LiPF6/EC/DEC electrolyte for lithium ion batteries using transmission electron microscopy (TEM). The inhomogeneous lithiation, lithium metal dendritic growth, electrolyte decomposition, and solid-electrolyte interface (SEI) formation are observed in situ. These results shed lights on strategies of improving electrode design for reducing short-circuit failure and improving the performance of lithium ion batteries.