An Upgraded Lithium Ion Battery Based on a Polymeric Separator Incorporated with Anode Active Materials

Authors

Dongjiang Chen, Harbin Institute of Technology
Ziqi Zhou, University of Electronic Science and Technology of China
Chao Feng, University of Electronic Science and Technology of China
Weiqiang Lv, University of Electronic Science and Technology
Zhaohuan Wei, University of Electronic Science and Technology of China
Kelvin H. L Zhang, Xiamen University
Bin Lin, University of Electronic Science and Technology of China
Songhao Wu, University of Electronic Science and Technology of China
Tianyu Lei, University of Electronic Science and Technology of China
Xuyun Guo, The Hong Kong University of Science And Technology
Gaolong Zhu, University of Electronic Science and Technology of China
Xian Jian, University of Electronic Science and Technology of China
Jie Xiong, University of Electronic Science and Technology of China
Enrico Traversa, University of Electronic Science and Technology of ChinaFollow
Shi Xue Dou, University of WollongongFollow
Weidong He, University of Electronic Science and Technology of China

RIS ID

133754

Publication Details

Chen, D., Zhou, Z., Feng, C., Lv, W., Wei, Z., Zhang, K., Lin, B., Wu, S., Lei, T., Guo, X., Zhu, G., Jian, X., Xiong, J., Traversa, E., Dou, S. Xue. & He, W. (2019). An Upgraded Lithium Ion Battery Based on a Polymeric Separator Incorporated with Anode Active Materials. Advanced Energy Materials, 9 (15), 1803627-1-1803627-11.

Abstract

Structural/compositional characteristics at the anode/electrolyte interface are of paramount importance for the practical performance of lithium ion batteries, including cyclic stability, rate capacity, and operational safety. The anode-electrolyte interface with traditional separator technology is featured with inevitable phase discontinuity and fails to support the stable operation of lithium ion batteries based on large-capacity anodes with structural change in charges/discharges, such as transition metal oxide anodes. In this work, an anode/electrolyte framework based on an oxide anode and an active-oxide-incorporated separator is proposed for the first time and investigated for lithium ion batteries. The architecture builds a robust anode-separator interface in LIBs, shortens Li + diffusion path, accelerates electron transport, and mitigates the volume change of the oxide anode in electrochemical reactions. Remarkably, 4 wt% CuO addition in the separator leads to a 17% enhancement in the overall capacity of a battery with a CuO anode. The battery delivers an unparalleled record reversible capacity of 637.2 mAh g −1 with a 99% capacity retention after 100 charge/discharge cycles at 0.5 C. The high performance are attributed to the robust anode-separator interface, which gives rise to enhanced interaction between the oxide anode and the same-oxide-incorporated composite in the separator.