| MOF衍生的Zn/N共掺杂碳催化剂的制备及其电催化性能 |
| Preparation and Electrocatalytic Performance of Zn/N Co-doped Carbon Catalyst Derived from MOF |
| 作者 | 单位 | E-mail | | 白亚峰 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | gzmlbyf@163.com | | 杨子恒 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | | | 冯勇 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | | | 刘富亮 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | | | 陈晓涛 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | | | 常继莹 | 贵州梅岭电源有限公司, 遵义 563003
特种化学电源国家重点实验室, 遵义 563003 | |
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| 摘要: 氮掺杂碳载非贵金属氧还原反应（ORR）催化剂已被广泛研究，以解决燃料电池Pt基催化剂的高成本问题。通过溶剂热法制备了无定形Zn基金属有机框架，并进一步经热处理得到Zn/N共掺杂碳催化剂。测试表明ZnN/C-900催化剂（热处理温度为900℃）具有形貌均一的球形特征且比表面积高达961 m2·g-1，N、Zn的原子含量分别为1.6%、5.87%。ZnN/C-900催化剂表现出较高的ORR催化活性及稳定性，在碱性介质中，ZnN/C-900催化剂的起始电位、半波电位和极限电流密度分别为0.955 V、0.855 V和7.10 mA·cm-2，在酸性介质中，ZnN/C-900的起始电位、半波电位和极限电流密度分别为0.882 V、0.649 V和6.01 mA·cm-2，且具有较高的稳定性和抗甲醇中毒性能。 |
| 关键词: 燃料电池 氧还原反应催化剂 金属有机框架 Zn/N共掺杂 碳球 |
| 基金项目: 特种化学电源国家重点实验室资助研究。 |
| Abstract: In order to solve the high cost of fuel cell Pt-based catalysts, nitrogen-doped carbon non-noble metal oxygen reduction reaction (ORR) catalysts have been widely studied. The amorphous Zn(Ⅱ)-organic framework was prepared by solvothermal method and the Zn/N co-doped carbon catalyst was obtained by thermally processing. The results showed that the ZnN/C-900 catalyst (pyrolyzed at 900℃) had a uniform spherical structure. The N2 adsorption-desorption isotherms of ZnN/C-900 catalyst showed that it had a specific surface area of up to 961 m2 g-1, and the atomic percentages of active N and Zn were 1.6% and 5.87%. The catalyst had high ORR catalytic activity and stability. In alkaline medium, the initial potential, half-wave potential and limiting current density of ZnN/C-900 were 0.955 V, 0.855 V and 7.10 mA·cm-2, respectively. In acid medium, the initial potential, half-wave potential and limiting current density of ZnN/C-900 were 0.882 V, 0.649 V and 6.01 mA·cm-2, respectively. ZnN/C-900 exhibited high stability and resistance to methanol poisoning. |
| Keywords: fuel cell oxygen reduction reaction catalyst metal organic framework Zn/N co-doping carbon sphere |
| 投稿时间：2021-01-13 修订日期：2021-04-14 |
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| 白亚峰,杨子恒,冯勇,刘富亮,陈晓涛,常继莹.MOF衍生的Zn/N共掺杂碳催化剂的制备及其电催化性能[J].无机化学学报,2021,37(6):1055-1061. |
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