| 富氮洋葱碳包覆的Ni/NiFe2O4纳米棒析氧电催化剂 |
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| 引用本文： | 刘光,姚瑞,赵勇,王慕恒,李娜,李晋平. 富氮洋葱碳包覆的Ni/NiFe2O4纳米棒析氧电催化剂[J]. 无机化学学报, 2018, 34(8): 1494-1500 |
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| 作者姓名： | 刘光 姚瑞 赵勇 王慕恒 李娜 李晋平 |
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| 作者单位： | 太原理工大学精细化工研究所气体能源高效清洁利用山西省重点实验室 |
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| 基金项目： | 国家自然科学基金（No.51402205）和山西省基础研究计划（No.2015021058）项目资助。 |
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| 摘 要： | 将镍铁金属配位聚合物前驱体在惰性气氛下热分解制备了富氮洋葱碳(ONC)包覆的Ni/Ni Fe_2O_4多孔纳米棒复合析氧电催化剂,与Ni@ONC,Ni Fe_2O_4材料及传统Ru O_2催化剂相比,得益于这种富氮洋葱碳包覆的Ni/Ni Fe_2O_4一维多孔纳米异质结构,Ni/Ni Fe_2O_4@ONC材料拥有更优异的导电性能和更大的电化学活性面积(0.149 m F),因而表现出更优异的析氧电催化性能。Ni/Ni Fe_2O_4@ONC纳米棒在1 mol·L~(-1) KOH溶液中,10 m A·cm-2下的析氧过电位仅为299 m V,塔菲尔斜率为73 m V·dec-1,展现出优异的析氧稳定性能。
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| 关 键 词： | 电解水 析氧催化剂 富氮洋葱碳 镍铁氧化物 多孔异质结构 |
| 收稿时间： | 2018-04-13 |
| 修稿时间： | 2018-05-08 |
Ni/NiFe2O4 Nanorods Encapsulated in Onion-like N-Doped Carbon Nanolayers as Efficient Oxygen Evolution Electrocatalyst |
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| LIU Guang,YAO Rui,ZHAO Yong,WANG Mu-Heng,LI Na Li and Jin-Ping. Ni/NiFe2O4 Nanorods Encapsulated in Onion-like N-Doped Carbon Nanolayers as Efficient Oxygen Evolution Electrocatalyst[J]. Chinese Journal of Inorganic Chemistry, 2018, 34(8): 1494-1500 |
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| Authors: | LIU Guang YAO Rui ZHAO Yong WANG Mu-Heng LI Na Li Jin-Ping |
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| Affiliation: | Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China,Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China and Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | Ni/NiFe2O4 nanorods encapsulated in onion-like N-doped carbon (ONC) nanolayers was prepared by the pyrolysis of NiFe-based coordination polymer precursor under N2 atmosphere. Compared with Ni@ONC, NiFe2O4, and commercial RuO2 electrocatalysts, benefiting by the promoted electronic conductivity and enlarged electrochemical surface area (0.149 mF) from synergistic effects between the ONC nanolayers and encapsulated Ni/NiFe2O4 heterostructure, the as-prepared Ni/NiFe2O4@ONC hybrid nanorod exhibits extraordinary electrocatalytic activity towards oxygen evolution reaction (OER) with an overpotential of~299 mV at 10 mA·cm-2 and a Tafel slope of 73 mV·dec-1. |
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| Keywords: | water splitting oxygen evolution catalysts N-doped onion-like carbon nickel-iron oxides mesoporous heterostructure |
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