(Peer-Reviewed) Integrated 'all-in-one' strategy to stabilize zinc anodes for high-performance zinc-ion batteries
Canpeng Li 李灿鹏 ¹, Xuesong Xie 解雪松 ¹, Hui Liu ¹, Pinji Wang ¹, Canbin Deng ¹, Bingan Lu 鲁兵安 ², Jiang Zhou 周江 ¹, Shuquan Liang 梁叔全 ¹
¹ School of Materials Science and Engineering, Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha 410083, China
中国 长沙 中南大学材料科学与工程学院 电子封装及先进功能材料湖南省重点实验室
² School of Physics and Electronics, Hunan University, Changsha 410082, China
中国 长沙 湖南大学物理与微电子科学学院
Many optimization strategies have been employed to stabilize zinc anodes of zinc-ion batteries (ZIBs). Although these commonly used strategies can improve anode performance, they simultaneously induce specific issues at the same time. In this study, through the combination of structural design, interface modification, and electrolyte optimization, an 'all-in-one' (AIO) electrode was developed.
Compared to the three-dimensional (3D) anode in routine liquid electrolytes, the new AIO electrode can greatly suppress gas evolution and the occurrence of side reactions induced by active water molecules, while retaining the merits of a 3D anode. Moreover, the integrated AIO strategy achieves a sufficient electrode/electrolyte interface contact area, so that the electrode can promote electron/ion transfer, and ensure a fast and complete redox reaction.
As a result, it achieves excellent shelving-restoring ability (60 h, four times) and 1200 cycles of long-term stability without apparent polarization. When paired with two common cathode materials used in ZIBs (α-MnO2 and NH4V4O10), full batteries with the AIO electrode demonstrate high capacity and good stability. The strategy of the ‘all-in-one’ architectural design is enlightened to solve the issues of zinc anodes in advanced Zn-based batteries.