| 射频等离子制备石墨烯负载Co3O4催化剂及其析氧性能研究 |
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| 引用本文： | 敖刚,李冬东,朱倩钰,刘昊橙,李昊澄,史毅,罗庆亮,杨庆.射频等离子制备石墨烯负载Co3O4催化剂及其析氧性能研究[J].人工晶体学报,2022,51(8):1406-1412. |
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| 作者姓名： | 敖刚 李冬东 朱倩钰 刘昊橙 李昊澄 史毅 罗庆亮 杨庆 |
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| 作者单位： | 1.云南电网有限责任公司昆明供电局,昆明 650000;2.重庆大学电气工程学院,重庆 400044 |
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| 基金项目： | 云南电网有限责任公司科技项目(YNKJXM20180865) |
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| 摘 要： | 氢能的引入能有效提升配电网的供电可靠性,而电解水制氢是实现低碳转型的关键技术,开发高效的电解水催化剂势在必行。过渡金属氧化物储量大、催化活性高,是具有广阔应用前景的析氧反应催化剂。本文通过射频等离子体处理制备石墨烯上负载Co3O4析氧催化剂,XRD、Raman和XPS测试结果显示,二维结构石墨烯的引入加速表面电子迁移,增大了反应面积。等离子体处理促进了纳米粒子在石墨烯上的负载,利用等离子体刻蚀作用在催化剂表面制造出大量碳结构缺陷和氧空位结构,改善了活性位点分布,有效调控Co3O4电子结构,提高析氧催化活性。电化学测试表明,本文中合成的Co3O4@rGO在电流密度为50 mA·cm-2时的过电位为410 mV,动力学反应速率较快,表现出优于商业IrO2的析氧催化活性。
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| 关 键 词： | 等离子体 石墨烯 CO3O4 氧空位 电催化 析氧反应 |
| 收稿时间： | 2022-04-15 |
Preparation of Graphene Supported Co3O4 Catalyst by Radio Frequency Plasma and Its Oxygen Evolution Performance |
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| AO Gang,LI Dongdong,ZHU Qianyu,LIU Haocheng,LI Haocheng,SHI Yi,LUO Qingliang,YANG Qing.Preparation of Graphene Supported Co3O4 Catalyst by Radio Frequency Plasma and Its Oxygen Evolution Performance[J].Journal of Synthetic Crystals,2022,51(8):1406-1412. |
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| Authors: | AO Gang LI Dongdong ZHU Qianyu LIU Haocheng LI Haocheng SHI Yi LUO Qingliang YANG Qing |
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| Affiliation: | 1. Kunming Power Supply Bureau of Yunnan Power Grid Co., Ltd., Kunming 650000, China;2. School of Electrical Engineering, Chongqing University, Chongqing 400044, China |
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| Abstract: | The introduction of hydrogen energy can effectively improve the power supply reliability of the distribution network, and hydrogen production from water electrolysis is a key technology to achieve low-carbon transformation, so it is imperative to develop efficient electrolysis water catalysts. Transition metal oxides have large reserves and high catalytic activity, and are regarded as promising oxygen evolution reaction catalysts. In this work, the oxygen evolution catalyst of graphene which supports Co3O4 was prepared by radio frequency plasma. The test results of XRD, Raman and XPS show that the introduction of two-dimensional graphene accelerates the surface electron migration and increases the reaction area. Plasma treatment facilitates the loading of nanoparticle on graphene, and plasma etching is used on the surface of catalyst to create a large number of graphene structural defects and oxygen vacancies, which improves the distribution of active sites, effectively regulates the electronic structure of Co3O4 and improves the catalytic activity of oxygen evolution. Electrochemical tests show that the overpotential of Co3O4@rGO synthesized in this experiment is 410 mV at a current density of 50 mA·cm-2, the kinetic reaction rate is fast, and exhibits a catalytic activity of oxygen evolution that is superior to that of commercial IrO2. |
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| Keywords: | plasma graphene Co3O4 oxygen vacancy electrocatalysis oxygen evolution reaction |
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