| 燃料电池铂钴锰合金催化剂的制备及性能 |
| Preparation and properties of platinum-cobalt-manganese alloy catalysts for fuel cells |
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| 摘要: 为提高PtCo/C合金催化剂的电化学性能，采用微波法合成铂钴锰催化剂前驱体，经高温热处理形成合金，最后通过酸处理得到铂钴锰合金催化剂(PtCoMn/C)。电化学测试结果表明：适量锰的添加可提升PtCo/C催化剂的活性和耐久性。PtCoMn/C催化剂在0.9 V (vs RHE)电压下的质量比活性(MA)达到0.666 A·mgPt-1，是传统Pt/C的2.66倍，是PtCo/C催化剂的1.30倍。在30 000圈催化剂加速耐久性测试中，PtCoMn/C合金催化剂的电化学活性面积(ECSA)和质量比活性(MA)仅下降6.9%和27.1%，均远低于Pt/C催化剂。 |
| 关键词: 质子交换膜燃料电池 催化剂 铂 钴 锰 氧还原 |
| 基金项目: 南通市基础科学基金项目(No.JC2021109)和国家重点研发计划(No.2022YFE0207600)资助。 |
| Abstract: The precursor of PtCoMn alloy catalyst was synthesized with ethylene glycol as reducing agent under microwave heating. After high temperature heat treatment, the alloy was formed. Finally, the PtCoMn alloy catalyst was obtained by acid treatment. The composition, structure, and morphology of the catalyst were characterized by elemental analysis, X-ray diffraction, and transmission electron microscopy. The surface electronic structure and properties of the catalyst were studied by X-ray photoelectron spectroscopy and electrochemical workstation. The results showed that the activity and durability of the catalyst can be improved by the addition of proper amount of Mn. The mass specific activity (MA) of PtCoMn/C catalyst was 0.666 A·mgPt-1 at 0.9 V (vs RHE), which was 2.66 times that of conventional Pt/C and 1.30 times that of PtCo/C catalyst. In the 30 000-cycle catalyst accelerated durability test, electrochemical active area (ECSA) and MA of PtCoMn/C alloy catalyst only decreased by 6.9% and 27.1%, both of which were much lower than Pt/C catalyst. |
| Keywords: proton exchange membrane fuel cell catalyst platinum cobalt manganese oxygen reduction |
| 投稿时间：2023-03-01 修订日期：2023-05-22 |
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| 韩梦飞,顾军,薛盛鼎,祝苏君,黄润生.燃料电池铂钴锰合金催化剂的制备及性能[J].无机化学学报,2023,39(7):1253-1260. |
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