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Controllable construction of CoP nanoparticles anchored on a nitrogen-doped porous carbon as an electrocatalyst for highly efficient oxygen reduction in Zn-air batteries

YAN Xiao-li WANG Kui HAO Shu-wei ZHOU Guang-da YANG Hao-wei ZHANG Hua GUO Jun-jie

闫晓丽, 王奎, 郝姝葳, 周广达, 杨浩伟, 张华, 郭俊杰. 可控构建分级多孔炭载CoP纳米颗粒催化剂用于高效氧还原反应. 新型炭材料(中英文), 2024, 39(3): 526-537. doi: 10.1016/S1872-5805(24)60848-6
引用本文: 闫晓丽, 王奎, 郝姝葳, 周广达, 杨浩伟, 张华, 郭俊杰. 可控构建分级多孔炭载CoP纳米颗粒催化剂用于高效氧还原反应. 新型炭材料(中英文), 2024, 39(3): 526-537. doi: 10.1016/S1872-5805(24)60848-6
YAN Xiao-li, WANG Kui, HAO Shu-wei, ZHOU Guang-da, YANG Hao-wei, ZHANG Hua, GUO Jun-jie. Controllable construction of CoP nanoparticles anchored on a nitrogen-doped porous carbon as an electrocatalyst for highly efficient oxygen reduction in Zn-air batteries. New Carbon Mater., 2024, 39(3): 526-537. doi: 10.1016/S1872-5805(24)60848-6
Citation: YAN Xiao-li, WANG Kui, HAO Shu-wei, ZHOU Guang-da, YANG Hao-wei, ZHANG Hua, GUO Jun-jie. Controllable construction of CoP nanoparticles anchored on a nitrogen-doped porous carbon as an electrocatalyst for highly efficient oxygen reduction in Zn-air batteries. New Carbon Mater., 2024, 39(3): 526-537. doi: 10.1016/S1872-5805(24)60848-6

可控构建分级多孔炭载CoP纳米颗粒催化剂用于高效氧还原反应

doi: 10.1016/S1872-5805(24)60848-6
基金项目: 国家自然科学基金(12305332);山西省自然科学基金(202203021221089);山西省科技创新人才团队项目(202304051001010);山西省高等学校科技创新项目(2019L0253);山西省高等学校创新人才计划(PTIT)
详细信息
    通讯作者:

    闫晓丽,讲师. E-mail:yanxiaoli@tyut.edu.cn

    郭俊杰,教授. E-mail:guojunjie@tyut.edu.cn

  • 中图分类号: TQ152

Controllable construction of CoP nanoparticles anchored on a nitrogen-doped porous carbon as an electrocatalyst for highly efficient oxygen reduction in Zn-air batteries

Funds: This work was supported by the National Natural Science Foundation of China (12305332), Natural Science Foundation of Shanxi Province (202203021221089), Science and Technology Innovation Talent Team Project of Shanxi Province (202304051001010), Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (2019L0253), and Program for the Innovative Talents of Higher Education Institutions of Shanxi (PTIT)
More Information
  • 摘要: 为金属空气电池等热点能源器件中的阴极氧还原反应(ORR)设计低成本和高效率的无贵金属催化剂仍然是一项巨大的挑战。过渡金属磷化物(TMPs)因其可调的电子结构及优异的催化性能,有望替代贵金属催化剂。本文采用磷化策略(350 °C下二次热解),构建了一种在分层多孔炭框架上负载由掺氮炭壳包裹的CoP纳米颗粒催化剂(CoP@NC)。在二次热解过程中,Co纳米颗粒在NaH2PO2生成的PH3气体下原位转化为CoP纳米颗粒,而载体的十二面体结构没有发生改变。在碱性条件下,CoP@NC电催化剂表现出优异的ORR活性,半波电位高达0.92 V,这归因于分散良好的CoP纳米颗粒与炭壳之间的协同耦合以及载体多孔结构实现的高效质量传输。此外,使用CoP@NC组装的锌-空气电池展现出1.51 V的高开路电压和210.1 mW cm−2的功率密度。这项研究将有助于开发低成本和高效率的ORR电催化剂。
  • FIG. 3192.  FIG. 3192.

    FIG. 3192..  FIG. 3192.

    1.  Fabrication schematic of CoP@NC

    Figure  1.  SEM micrographs of (a) Co@NC[37] and (b) CoP@NC electrocatalysts. (c) Corresponding XRD patterns. (d-f) TEM images of CoP@NC catalyst

    Figure  2.  High-resolution deconvoluted XPS analysis of (a) C 1s, (b) N 1s, (c) Co 2p and (d) P 2p

    Figure  3.  (a) LSV curves of CoP@NC, Co@NC and Pt/C catalysts. (b) E1/2 and Jk (0.85 V) of different catalysts. (c) Cdl values of each catalyst versus the scanning speed, and the results are drawn as shown. (d) LSV curves of CoP@NC obtained at rotational speeds of 400-2025 r min−1. (e) K-L plots of CoP@NC. (f) The electron transfer number (n) and the H2O2 selectivity of the CoP@NC and Pt/C catalysts measured according to RRDE. (g) LSV curves before and after 5000 potentiostatic cycles of CoP@NC and Pt/C. (h) Chronoamperometric tests of CoP@NC and Pt/C catalys at 0.60 V (vs. RHE). (i) Methanol antitoxicity testing of CoP@NC and Pt/C catalysts

    Figure  4.  (a) Open-circuit voltage profile of ZABs under alkaline solution assembled using CoP@NC and Pt/C catalysts as air cathode materials. (Inset) Photograph of connecting two ZABs lighting up a LED. (b) Polarization curves and power density curves of the of ZABs of the CoP@NC and Pt/C catalysts. (c) Discharging capacity curves normalized by the consumed Zn of CoP@NC and Pt/C . (d) Rate performance of ZABs with CoP@NC and Pt/C (20%) as air cathode at 2-20 mA cm−2, respectively. (e) Charge-discharge cycle curves of ZABs using CoP@NC and Pt/C catalysts

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出版历程
  • 收稿日期:  2024-01-11
  • 录用日期:  2024-03-29
  • 修回日期:  2024-03-28
  • 网络出版日期:  2024-04-02
  • 刊出日期:  2024-06-15

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