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Co-Ni-Based Nanotubes/Nanosheets as Efficient Water Splitting Electrocatalysts

机译：基于CO-NI的纳米管/纳米片作为有效的水分裂电催化剂

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摘要

One promising approach to hydrogen energy utilization from full water splitting relies on the successful development of earth-abundant, efficient, and stable electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Here, homologous Co-Ni-based nanotubeanosheet structures with tunable Co/Ni ratios, including hydroxides and nitrides, are grown on conductive substrates by a cation-exchanging method to grow hydroxides, followed by anion exchanging to obtain corresponding nitrides. These hydroxide OER catalysts and nitride HER catalysts exhibit low overpotentials, small Tafel slopes, and high current densities, which are attributed to their large electrochemically reactive surface, 1D morphologies for charge conduction, and octahedral coordination states of metal ions for efficient catalytic activities. The homologous Co-Ni-based nanotube hydroxides and nitrides suggest promising electrocatalysts for full water splitting with high efficiency, good stability, convenient fabrication, and low cost.
机译：从全水分分裂氢能量利用的一项有希望的方法依赖于氧气进化反应（oer）和氢进化反应（她）的氧气丰富，高效和稳定的电催化剂的成功发展。这里，通过阳离子交换方法在导电底物中产生具有可调谐CO / Ni比率的同源共合的基于CO / Ni比率，包括氢氧化物和氮化物，以使氢氧化物生长，然后进行混合以获得相应的氮化物。这些氢氧化物催化剂和氮化物的催化剂表现出低的过电，小Tafel斜率和高电流密度，其归因于它们的大电化学反应性表面，用于电荷传导的1D形貌，以及金属离子的八面体配位状态，用于有效的催化活性。基于同源的Co-Ni纳米管氢氧化物和氮化物表明了具有高效率，稳定性，制造方便，制造方便，成本低的全水分性的有前途的电催化剂。

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  • 来源
    《Advanced energy materials》 |2016年第3期|1501661.1-1501661.7|共7页
  • 作者

    Li Siwen; Wang Yongcheng; Peng Sijia; Zhang Lijuan; Al-Enizi Abdullah M.; Zhang Hui; Sun Xuhui; Zheng Gengfeng;

  • 作者单位

    Fudan Univ Adv Mat Lab Dept Chem Collaborat Innovat Ctr Chem Energy Mat Shanghai 200433 Peoples R China;

    Fudan Univ Adv Mat Lab Dept Chem Collaborat Innovat Ctr Chem Energy Mat Shanghai 200433 Peoples R China;

    Fudan Univ Adv Mat Lab Dept Chem Collaborat Innovat Ctr Chem Energy Mat Shanghai 200433 Peoples R China;

    Fudan Univ Adv Mat Lab Dept Chem Collaborat Innovat Ctr Chem Energy Mat Shanghai 200433 Peoples R China;

    King Saud Univ Coll Sci Dept Chem Riyadh 11451 Saudi Arabia;

    Soochow Univ Western Univ Collaborat Innovat Ctr Suzhou Nano Sci & Technol Inst Funct Nano & Soft Mat Lab FUNSOM Ctr Synchro Suzhou Peoples R China;

    Soochow Univ Western Univ Collaborat Innovat Ctr Suzhou Nano Sci & Technol Inst Funct Nano & Soft Mat Lab FUNSOM Ctr Synchro Suzhou Peoples R China;

    Fudan Univ Adv Mat Lab Dept Chem Collaborat Innovat Ctr Chem Energy Mat Shanghai 200433 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    electrocatalysts; hydrogen evolution reactions; nanotubes; nanosheets; oxygen evolution reactions;

    机译：电催化剂;氢进化反应;纳米管;纳米液;氧气进化反应;

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