@article{Wang2023, 
author = {Jinming Wang and Xiangjian Liu and Liuhua Li and Rui Liu and Yarong Liu and Changli Wang and Zunhang Lv and Wenxiu Yang and Xiao Feng and Bo Wang},
title = {Heterogeneous assembling 3D free-standing Co@carbon membrane enabling efficient fluid and flexible zinc-air batteries},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {7},
pages = {9327-9334},
keywords = {free-standing membrane, electrocatalysts, carbon nanomaterials, zinc-air batteries},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5553-x},
doi = {10.1007/s12274-023-5553-x},
abstract = {Developing an efficient, interface-rich, and free-standing non-noble-metal electrocatalyst is vital for the flexible zinc-air batteries (ZABs). Herein, a three-dimensional (3D) heterogeneous carbon-based flexible membrane was assembled by Co@carbon nanosheets/carbon nanotubes and hollow carbon nanofiber (Co@NS/CNT-CNF) as an efficient oxygen reduction reaction (ORR) catalyst with a positive half-wave potential of 0.846 V and a small Tafel slope of 79 mV·dec−1. Meanwhile, the Co@NS/CNT-CNF electrode also exhibits excellent open-circuit voltage, peak power density, and long-time cycling stability in liquid-state ZABs (1.605 V, 163 mW·cm−2, and 400 h) and flexible ZABs under flat/bending condition (1.47 V, 102 mW·cm−2, and 80 h). Such heterogeneous flexible membrane architecture not only optimizes the electrolyte infiltration, but also provides capacious possibility for O2 and electrolyte transfer. Meanwhile, work-function analyses coupled with density functional theory (DFT) results demonstrate that the electron transfer capability and metal–support interaction can be well optimized in the obtained Co@NS/CNT-CNF catalyst.}
}