Accelerated electrocatalytic hydrogen evolution on non-noble metal containing trinickel nitride by introduction of vanadium nitride
Accelerated electrocatalytic hydrogen evolution on non-noble metal containing trinickel nitride by introduction of vanadium nitride
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引入氮化钒加速含三镍氮化物的电催化析氢
DOI：
10.1039/c8ta12043a
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发表时间：
2019
影响因子：
11.9
通讯作者：
Huang Baibiao
中科院分区：
文献类型：
--
作者：
Zhou Peng;Xing Danning;Liu Yuanyuan;Wang Zeyan;Wang Peng;Zheng Zhaoke;Qin Xiaoyan;Zhang Xiaoyang;Dai Ying;Huang Baibiao
氮化三镍作为一种具有良好应用前景的析氢反应电催化剂，因其高导电性和低成本而备受关注。本文中，我们通过氮化处理NiV-LDH前体来设计和合成新颖且有效的Ni 3 N @VN-NF复合材料。与纯Ni 3 N-NF和VN-NF电极相比，所获得的电极表现出优异的上级性能，包括在10 mA cm-2下的56 mV的低得多的过电位和47 mV dec-1的Tafel值。将作为阴极的Ni 3 N @VN-NF复合物和作为阳极的常规OER电极NiFe-LDH-NF组合以形成完整的水裂解系统。10 mA cm−2时的电压约为1.55 V，这比许多文献研究中报道的电压值要高上级。此外，双电极系统在长达50小时的操作后仍具有优异的耐久性。
Trinickel nitride as a kind of promising hydrogen evolution reaction (HER) electrocatalyst has attracted much attention in recent years due to its high electrical conductivity and low cost. Herein, we designed and synthesized a novel and efficient Ni3N@VN–NF composite by nitriding treatment of a NiV-LDH precursor. The obtained electrode exhibits superior performances including a much lower overpotential of 56 mV at 10 mA cm−2 and Tafel value of 47 mV dec−1 compared to pure Ni3N–NF and VN–NF electrodes. The Ni3N@VN–NF composite as a cathode and a conventional OER electrode NiFe-LDH–NF as an anode were combined to form a complete water-splitting system. The voltage at 10 mA cm−2 is about 1.55 V, which is superior to the voltage value reported in many literature studies. In addition, the two-electrode system exhibits excellent durability after as long as 50 hours of operation.