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NiCoP/CoP Nanoparticles Supported on Ti4O7 as the Electrocatalyst Possessing an Excellent Catalytic Performance toward the Hydrogen Evolution Reaction
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-09-29 00:00:00 , DOI: 10.1021/acssuschemeng.8b02935 Dan Ma 1, 2 , Ruihao Li 3 , Zhilin Zheng 1 , Zhijun Jia 1 , Kai Meng 1 , Yi Wang 1 , Guangming Zhu 2 , Hui Zhang 1 , Tao Qi 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-09-29 00:00:00 , DOI: 10.1021/acssuschemeng.8b02935 Dan Ma 1, 2 , Ruihao Li 3 , Zhilin Zheng 1 , Zhijun Jia 1 , Kai Meng 1 , Yi Wang 1 , Guangming Zhu 2 , Hui Zhang 1 , Tao Qi 1
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NiCoP/CoP nanoparticles and NiCoP/CoP nanoparticles supported on carbon black (NiCoP/CoP–C) and titanium suboxide (NiCoP/CoP–Ti4O7), respectively, are prepared by a hydrothermal method followed by two steps of low temperature annealing processes. As hydrogen evolution reaction (HER) catalysts, the activities of the three catalysts are measured by linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and so on. Impressively, NiCoP/CoP–Ti4O7 shows the best electrocatalytic performance for HER with an ultralow overpotential of 128 mV at 10 mA cm–2 along with negligible catalytic activity degradation after 1000 cycles of CV, which is partly ascribed to the high conductivity and corrosion resistance of Ti4O7. According to the characterization of X-ray photoelectron spectra (XPS), it is found that NiCoP/CoP–Ti4O7 has a higher ratio of Ni2+ and surface defects, which can be also used to explain the reason why NiCoP/CoP–Ti4O7 owns the most preeminent HER activity among the three catalysts.
中文翻译：
负载在Ti 4 O 7上的NiCoP / CoP纳米粒子作为电催化剂，对氢气的析出反应具有优异的催化性能
分别通过水热法和两个步骤的低温退火分别制备了负载在炭黑（NiCoP / CoP–C）和低氧化钛（NiCoP / CoP–Ti 4 O 7）上的NiCoP / CoP纳米颗粒和NiCoP / CoP纳米颗粒。流程。作为放氢反应（HER）催化剂，通过线性扫描伏安法（LSV），循环伏安法（CV），电化学阻抗谱（EIS）等来测量这三种催化剂的活性。令人印象深刻的是，NiCoP / CoP–Ti 4 O 7对HER具有最佳的电催化性能，在10 mA cm –2时具有128 mV的超低过电势CV循环1000次后，催化活性的降低可忽略不计，部分归因于Ti 4 O 7的高电导率和耐腐蚀性。根据X射线光电子能谱（XPS）的表征，发现NiCoP / CoP–Ti 4 O 7具有较高的Ni 2+比例和表面缺陷，这也可以用来解释为什么NiCoP /在三种催化剂中，CoP–Ti 4 O 7具有最出色的HER活性。
更新日期：2018-09-29
中文翻译：
负载在Ti 4 O 7上的NiCoP / CoP纳米粒子作为电催化剂，对氢气的析出反应具有优异的催化性能
分别通过水热法和两个步骤的低温退火分别制备了负载在炭黑（NiCoP / CoP–C）和低氧化钛（NiCoP / CoP–Ti 4 O 7）上的NiCoP / CoP纳米颗粒和NiCoP / CoP纳米颗粒。流程。作为放氢反应（HER）催化剂，通过线性扫描伏安法（LSV），循环伏安法（CV），电化学阻抗谱（EIS）等来测量这三种催化剂的活性。令人印象深刻的是，NiCoP / CoP–Ti 4 O 7对HER具有最佳的电催化性能，在10 mA cm –2时具有128 mV的超低过电势CV循环1000次后，催化活性的降低可忽略不计，部分归因于Ti 4 O 7的高电导率和耐腐蚀性。根据X射线光电子能谱（XPS）的表征，发现NiCoP / CoP–Ti 4 O 7具有较高的Ni 2+比例和表面缺陷，这也可以用来解释为什么NiCoP /在三种催化剂中，CoP–Ti 4 O 7具有最出色的HER活性。
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