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N-doped nanoporous Co3O4 nanosheets with oxygen vacancies as oxygen evolving electrocatalysts

机译：N掺杂的纳米孔CO3O4纳米液，具有氧气空位作为氧气不断发展的电催化剂

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摘要

Developing highly active electrocatalysts for the oxygen evolution reaction (OER) with a high surface area, high catalytic activity, low cost and high conductivity is a big challenge for various energy technologies. Herein, for the first time, we realized the simultaneous nitrogen doping and etching of Co3O4 nanosheets to produce N-doped nanoporous Co3O4 nanosheets with oxygen vacancies by N-2 plasma. The increase in active sites in N-doped Co3O4 nanosheets and improved electronic conductivity with N doping and oxygen vacancies results in excellent electrocatalytic activity for the OER. Compared with pristine Co3O4 nanosheets, the N-doped Co3O4 nanosheets with oxygen vacancies have a much lower required potential of 1.54 V versus a reversible hydrogen electrode than the pristine Co3O4 nanosheets (1.79 V) to reach the current density of 10 mA cm(-2). The N-doped and etched Co3O4 nanosheets have a much lower Tafel slope of 59 mV dec(-1) than pristine Co3O4 nanosheets (234 mV dec(-1)). The enhanced electrocatalytic activity for the OER is caused by the increased surface area, N doping and the produced oxygen vacancies.
机译：为具有高表面积，高催化活性，低成本和高导电性的高活性电催化剂为氧气进化反应（OER）是各种能源技术的重要挑战。在此，我们首次实现了CO3O4纳米片的同时氮掺杂和蚀刻，以通过N-2等离子体产生具有氧空位的n掺杂的纳米多孔CO3O4纳米蛋白。 N掺杂CO3O4纳米片中的活性位点的增加和具有N掺杂和氧空位的改善的电子电导率导致伊尔的优异电催化活性导致优异的电催化活性。与原始CO3O4纳米片相比，具有氧空位的N掺杂的CO3O4纳米片具有比原始CO3O4纳米片（1.79V）达到10mA cm的电流密度所需的潜力1.54V的所需电位。 ）。 N掺杂的和蚀刻的CO3O4纳米蛋白酶比原始CO3O4纳米片（234mV DEC（-1））具有59mV DEC（-1）的低得多的TAFEL斜率。 oer的增强电催化活性是由增加的表面积，n掺杂和产生的氧空位引起的。

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  • 来源
    《Nanotechnology》 |2017年第16期|共8页
  • 作者

    Xu Lei; Wang Zhimin; Wang Jialu; Xiao Zhaohui; Huang Xiaobing; Liu Zhigang; Wang Shuangyin;

  • 作者单位

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Chem Biosensing &

    Chemometr Prov Hunan Key Lab Graphene Mat &

    Devices Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    electrocatalyst; oxygen evolution reaction; Co3O4; oxygen vacancies; nitrogen doping;

    机译：电催化剂;氧气进化反应;CO3O4;氧空位;氮掺杂;

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