Xiong, Lingyun Fu, Hao Yang, Kai Kim, Ji Young Ren, Ren Lee, Joong Kee Yang, Woochul Liu, Guicheng 2024-01-19T09:31:23Z 2024-01-19T09:31:23Z 2023-06-15 2023-06 2637-9368 https://pubs.kist.re.kr/handle/201004/113676 Commercialization of Zn-metal anodes with low cost and high theoretical capacity is hindered by the poor reversibility caused by dendrites growth, side reactions, and the slow Zn2+-transport and reaction kinetics. Herein, a reversible heterogeneous electrode of Zn-nanocrystallites/polyvinyl-phosphonic acrylamide (Zn/PPAm) with fast electrochemical kinetics is designed for the first time: phosphonic acid groups with strong polarity and chelation effect ensure structural reversibility and stability of the three-dimensional Zn-storage-host PPAm network and the Zn/PPAm hybrid; hydrophobic carbon chains suppress side reactions such as hydrogen evolution and corrosion; weak electron-donating amide groups constitute Zn2+-transport channels and promote "desolvation" and "solvation" effects of Zn2+ by dragging the PPAm network on the Zn-metal surface to compress/stretch during Zn plating/stripping, respectively; and the heterostructure and Zn nanocrystallites suppress dendrite growth and enhance electrochemical reactivity, respectively. Thus, the Zn/PPAm electrode shows cycle reversibility of over 6000 h with a hysteresis voltage as low as 31 mV in symmetrical cells and excellent durability and flexibility in fiber-shaped batteries. English Wiley Reversible Zn/polymer heterogeneous anode Article 10.1002/cey2.370 1 Carbon Energy, v.5, no.6 Carbon Energy 5 6 Y scie scopus 000990213300001 2-s2.0-85159692912 Chemistry, Physical Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article METAL ANODES ZN STABILITY ALLOY dendrite-free electrode process kinetics fiber-shaped battery reversible metal/polymer heterostructure Zn-metal anode