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Controllable electrodeposition synthesis of Pd/TMxOy-rGO/CFP composite electrode for highly efficient methanol electro-oxidation
International Journal of Hydrogen Energy ( IF 7.2 ) Pub Date : 2021-09-24 , DOI: 10.1016/j.ijhydene.2021.08.099
Qiao Zhang 1, 2 , Chaoyang Shi 1, 2 , Enze Zhu 1, 2 , Weiping Liu 3 , Kun Liu 1, 2 , Yuhui Li 1, 2 , Wei Li 4 , Xikun Yang 2, 4 , Juan Yu 3 , Mingli Xu 1, 2
Affiliation  

A novel and high-efficiency Pd/TMxOy-rGO/CFP (TMxOy = Co3O4, Mn3O4, Ni(OH)2) electrocatalyst for directly integrated membrane electrode was synthesized by controllable cyclic voltammetry electrodeposition combined with hydrothermal process. The results showed excellent performance towards methanol oxidation reduction. The Pd/Co3O4-rGO/CFP as-prepared catalyst has the best electrocatalytic activity, and mass activity is 5181 mA·mg−1Pd, which is about 40 times and 4.3 times that of the commercial Pd/C and Pt/C catalyst (JM). It can be attributed that the small size of Pd nanoparticle, uniformity of distribution, and the synergistic interaction between transition metal oxide on the support surface and Pd nanoparticles. The prepared Pd/TMxOy-rGO/CFP composite electrode is a promising catalyst for integrated membrane electrode assembly of proton exchange membrane fuel cells in the future.



中文翻译:

Pd/TMxOy-rGO/CFP复合电极的可控电沉积合成用于高效甲醇电氧化

通过可控循环伏安法合成了一种用于直接集成膜电极的新型高效Pd/TM x O y -rGO/CFP(TM x O y  = Co 3 O 4 , Mn 3 O 4 , Ni(OH) 2)电催化剂电沉积结合水热法。结果显示出对甲醇氧化还原的优异性能。Pd/Co 3 O 4 -rGO/CFP 制备的催化剂电催化活性最好,质量活性为5181 mA·mg -1 Pd,约为商用 Pd/C 和 Pt/C 催化剂(JM)的 40 倍和 4.3 倍。这可以归因于Pd纳米颗粒的小尺寸、分布的均匀性以及载体表面的过渡金属氧化物与Pd纳米颗粒之间的协同相互作用。制备的Pd/TM x O y -rGO/CFP复合电极是未来质子交换膜燃料电池集成膜电极组件的有前途的催化剂。

更新日期:2021-10-07
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