Co@NC纳米复合材料的制备及其电化学性能研究

doi:10.13208/j.electrochem.181146

电化学（中英文） ›› 2019, Vol. 25 ›› Issue (5): 601-607. doi: 10.13208/j.electrochem.181146

Co@NC纳米复合材料的制备及其电化学性能研究

谭小莉¹，何灯红¹，张兴旺^1,2*

1. 浙江大学化学工程与生物工程学院，生物质化工教育部重点实验室，浙江杭州 310027； 2. 浙江大学衢州研究院，浙江衢州 324000

收稿日期:2019-05-06 修回日期:2019-08-10 出版日期:2019-10-28 发布日期:2019-10-28
通讯作者: 张兴旺 E-mail:xwzhang@zju.edu.cn
基金资助:
浙江省自然科学基金杰出青年科学基金项目（No. LR17B060003）资助

Preparations and Electrochemical Properties of Co@NC Nanocomposites Based on ZIF-67

TAN Xiao-li¹, HE Deng-hong¹, ZHANG Xing-wang^1,2*

1. Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027; 2. Quzhou Research Institute, Zhejiang University, Quzhou, Zhejiang, 324000

Received:2019-05-06 Revised:2019-08-10 Published:2019-10-28 Online:2019-10-28
Contact: ZHANG Xing-wang E-mail:xwzhang@zju.edu.cn

摘要/Abstract

摘要： 本文从开发替代贵金属催化剂（如RuO₂，IrO₂，Pt）的廉价催化剂方面着手，以金属有机框架化合物ZIF-67为前驱物，通过室温溶剂热法合成金属有机骨架ZIF-67，将其高温炭化制备出包覆Co纳米颗粒的氮掺杂的碳基复合材料，即Co@NC. 研究炭化温度对其形貌结构、元素组成和电催化性能的影响. 制备形貌结构最优的Co@NC催化剂，并研究了其在碱性条件下析氧反应的催化活性和稳定性.

关键词: ZIF-67, Co@NC, 纳米复合材料, 电催化性能

Abstract: It is necessary to develop an inexpensive catalyst for the replacement of precious metal catalysts (such as RuO₂, IrO₂). In this article, the metal organic framework ZIF-67 was synthesized by solvothermal method at room temperature, and then the high temperature carbonization was used to prepare the nitrogen-doped carbon-based composite material Co@NC with the Co nanoparticle inside. The effects of the carbonization temperature on surface morphology, chemcial composition and electrocatalytic property were investigated. Most importantly, the Co@NC catalyst with the best morphology and structure was synthesized, and its catalytic activity and stability toward oxygen evolution reaction (OER) were studied under alkaline conditions. Electrochemical test results showed that the Co@NC catalyst prepared at 700 ℃ had higher OER catalytic activity and excellent stability. It only required an overpotential of 266 mV for reaching the current density of 10 mA·cm^-2, with good stability over 40 h.

Key words: ZIF-67, Co@NC, nanocomposites, electrocatalytic properties

中图分类号:

O646

谭小莉, 何灯红, 张兴旺. Co@NC纳米复合材料的制备及其电化学性能研究[J]. 电化学（中英文）, 2019, 25(5): 601-607.

TAN Xiao-li, HE Deng-hong, ZHANG Xing-wang. Preparations and Electrochemical Properties of Co@NC Nanocomposites Based on ZIF-67[J]. Journal of Electrochemistry, 2019, 25(5): 601-607.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.181146

https://electrochem.xmu.edu.cn/CN/Y2019/V25/I5/601

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Co@NC纳米复合材料的制备及其电化学性能研究

Preparations and Electrochemical Properties of Co@NC Nanocomposites Based on ZIF-67

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