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Atomically dispersed cobalt catalyst anchored on nitrogen-doped carbon nanosheets for lithium-oxygen batteries

Author

Listed:
  • Peng Wang

    (Shandong University)

  • Yingying Ren

    (Shandong University)

  • Rutao Wang

    (Shandong University)

  • Peng Zhang

    (Shandong University)

  • Mingjie Ding

    (Shandong University)

  • Caixia Li

    (Shandong University)

  • Danyang Zhao

    (Shandong University)

  • Zhao Qian

    (Shandong University)

  • Zhiwei Zhang

    (Shandong University)

  • Luyuan Zhang

    (Shandong University)

  • Longwei Yin

    (Shandong University)

Abstract

Developing single-site catalysts featuring maximum atom utilization efficiency is urgently desired to improve oxidation-reduction efficiency and cycling capability of lithium-oxygen batteries. Here, we report a green method to synthesize isolated cobalt atoms embedded ultrathin nitrogen-rich carbon as a dual-catalyst for lithium-oxygen batteries. The achieved electrode with maximized exposed atomic active sites is beneficial for tailoring formation/decomposition mechanisms of uniformly distributed nano-sized lithium peroxide during oxygen reduction/evolution reactions due to abundant cobalt-nitrogen coordinate catalytic sites, thus demonstrating greatly enhanced redox kinetics and efficiently ameliorated over-potentials. Critically, theoretical simulations disclose that rich cobalt-nitrogen moieties as the driving force centers can drastically enhance the intrinsic affinity of intermediate species and thus fundamentally tune the evolution mechanism of the size and distribution of final lithium peroxide. In the lithium-oxygen battery, the electrode affords remarkably decreased charge/discharge polarization (0.40 V) and long-term cyclability (260 cycles at 400 mA g−1).

Suggested Citation

  • Peng Wang & Yingying Ren & Rutao Wang & Peng Zhang & Mingjie Ding & Caixia Li & Danyang Zhao & Zhao Qian & Zhiwei Zhang & Luyuan Zhang & Longwei Yin, 2020. "Atomically dispersed cobalt catalyst anchored on nitrogen-doped carbon nanosheets for lithium-oxygen batteries," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15416-4
    DOI: 10.1038/s41467-020-15416-4
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    Cited by:

    1. Jie Yin & Jing Jin & Zhouyang Yin & Liu Zhu & Xin Du & Yong Peng & Pinxian Xi & Chun-Hua Yan & Shouheng Sun, 2023. "The built-in electric field across FeN/Fe3N interface for efficient electrochemical reduction of CO2 to CO," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Guokang Han & Xue Zhang & Wei Liu & Qinghua Zhang & Zhiqiang Wang & Jun Cheng & Tao Yao & Lin Gu & Chunyu Du & Yunzhi Gao & Geping Yin, 2021. "Substrate strain tunes operando geometric distortion and oxygen reduction activity of CuN2C2 single-atom sites," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    3. Wei Wang & Qun Song & Qiang Luo & Linqian Li & Xiaobing Huo & Shipeng Chen & Jinyang Li & Yunhong Li & Se Shi & Yihui Yuan & Xiwen Du & Kai Zhang & Ning Wang, 2023. "Photothermal-enabled single-atom catalysts for high-efficiency hydrogen peroxide photosynthesis from natural seawater," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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