Visualization of electrode-electrolyte interfaces in LiPF6/EC/DEC electrolyte for lithium ion batteries via in situ TEM.
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.
Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
Zhiyuan
Z
Zeng
Wen-I
WI
Liang
Hong-Gang
HG
Liao
Huolin L
HL
Xin
Yin-Hao
YH
Chu
Haimei
H
Zheng