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NiCo Alloy Anchored Self-supporting Carbon Foam as Bifunctional Oxygen Electrode for Rechargeable and Flexible Zn-air Batteries
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  • Mengyang Dong,
  • Huai Qin Fu,
  • Yiming Xu,
  • Yu Zou,
  • Ziyao Chen,
  • Liang Wang,
  • Mengqing Hu,
  • Kaidi Zhang,
  • Bo Fu,
  • Huajie Yin,
  • Porun Liu,
  • Huijun Zhao
Mengyang Dong
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Huai Qin Fu
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Ziyao Chen
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Liang Wang
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Mengqing Hu
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Kaidi Zhang
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Huajie Yin
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Porun Liu
Griffith University

Corresponding Author:[email protected]

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Huijun Zhao
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The design and fabrication of flexible, porous, conductive electrodes with customizable functions become the prime challenge in the development of new-generation wearable electronics, especially for rechargeable batteries. Here, NiCo bi-alloy particulate catalysts loaded self-supporting carbon foam framework (NiCo@SCF) as a flexible electrode has been fabricated through one facile adsorption-pyrolysis method using a commercial melamine foam. Compared with the electrode with Pt/C and Ir/C benchmark catalysts, the NiCo@SCF electrode exhibited superior bifunctional electrocatalytic performance in alkaline media with a half-wave potential of 0.906V for oxygen reduction reaction, an overpotential of 286 mV at j=10 mA cm−2 for oxygen evolution reaction, and stable bifunctional performance with a small degradation after 20,000 voltammetric cycles. The as-assembled aqueous zinc-air battery (ZAB) with NiCo@SCF as a self-supporting air cathode demonstrated a high peak power density of 178.6 mW cm-2 at a current density of 10 mA cm−2 and a stable voltage gap of 0.94V a 540 h charge-discharge operation. Remarkably, the as-assembled flexible solid-state ZAB with self-supporting NiCo@SCF as air cathode presented an engaging peak power density of 80.1 mW cm-2 and excellent durability of 95 h undisrupted operation, showing promise for the design of wearable ZAB.
30 Nov 2022Submitted to Battery Energy
01 Dec 2022Submission Checks Completed
01 Dec 2022Assigned to Editor
01 Dec 2022Review(s) Completed, Editorial Evaluation Pending
11 Dec 2022Reviewer(s) Assigned
07 Jan 2023Editorial Decision: Revise Major
06 Feb 20231st Revision Received
07 Feb 2023Submission Checks Completed
07 Feb 2023Assigned to Editor
07 Feb 2023Review(s) Completed, Editorial Evaluation Pending
19 Feb 2023Reviewer(s) Assigned
12 Apr 2023Editorial Decision: Accept