Decorating Co/CoNx nanoparticles in nitrogen-doped carbon nanoarrays for flexible and rechargeable zinc-air batteries

By C. Guan, A. Sumboja, W. Zang, Yuhong Qian, Hong Zhang, Ximeng Liu, Zhaolin Liu, Dan Zhao, S. Pennycook, John Wang. Energy Storage Materials, 2019

261 citations recorded by the source corpus.

Abstract Efficient and stable air cathodes which catalyze both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) are highly desirable but challenging for flexible and rechargeable Zn-air batteries. Here we synthesize unique hybrid cobalt/cobalt nitride (Co/CoNx) nanoparticles well-integrated with nitrogen-doped carbon (NC) nanoarrays through a facile fabrication using a two-dimensional metal–organic framework (MOF) precursor. Such NC-Co/CoNx nanoarrays show promising bifunctional catalytic properties toward both ORR and OER, and can be directly used as an active and durable air cathode for flexible sandwich-like layered Zn-air batteries. In addition, a coaxial fiber-shaped solid-state Zn-air battery is assembled using a carbon microfiber covered with the NC-Co/CoNx nanoarrays as the cathode, a Zn microfiber as the anode and a gel electrolyte. Such fiber-shaped Zn-air battery exhibits much enhanced volumetric power density coupled with good flexibility, showing promising application for flexible energy storage devices.

Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/b9d58a0086b91ff0345aa9a1cd975bdbaebf58e3

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In Electrical and Electronic Engineering

  1. A. Yu
  2. Ya-Ping Deng
  3. Zhongwei Chen
  4. Yi Jiang

In Renewable Energy, Sustainability and the Environment

  1. A. Yu
  2. Zhongwei Chen

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