Chen Peng, Huang Sa
Department of Pediatrics, The Second Hospital of Jilin University, Changchun 130041, China.
Department of Radiology, The Second Hospital of Jilin University, Changchun 130041, China.
Inorg Chem. 2022 Sep 12;61(36):14470-14476. doi: 10.1021/acs.inorgchem.2c02597. Epub 2022 Aug 31.
The ability to manipulate metal electrocatalysts with satisfactory performance for the ethanol oxidation reaction (EOR) is promising but still unsatisfactory for practical application in direct ethanol fuel cells. Beyond traditional metal-metal alloys, we herein report a novel metal-nonmetal alloy electrocatalyst that takes advantage of quaternary PdCuNiP alloy composition and the ultrathin/porous nanosheet (NS) structure. The optimized PdCuNiP porous NSs feature more undercoordinated active sites and modified electron/function structures, enabling better antipoisoning ability. Under alkaline conditions, this electrocatalyst shows excellent electrochemical EOR performance with a high EOR activity of 4.05 A mg and a low activation energy of 21.2 kJ mol, comparable to the state-of-the-art electrocatalysts reported in the literature. Meanwhile, PdCuNiP porous NSs are electrocatalytically active for electrochemical oxidation of other fuels (methanol, glycerol, and glucose), highlighting their great potential for various direct alcohol fuel cells. The findings reported here may put forward some insights into designing new functional electrocatalysts for various fuel cell electrocatalysis and beyond.
能够制备出对乙醇氧化反应（EOR）具有令人满意性能的金属电催化剂是很有前景的，但在直接乙醇燃料电池的实际应用中仍不尽人意。除了传统的金属 - 金属合金，我们在此报告了一种新型的金属 - 非金属合金电催化剂，它利用了四元PdCuNiP合金组成和超薄/多孔纳米片（NS）结构。优化后的PdCuNiP多孔纳米片具有更多配位不饱和的活性位点以及修饰的电子/功能结构，从而具有更好的抗中毒能力。在碱性条件下，这种电催化剂表现出优异的电化学乙醇氧化反应性能，具有4.05 A mg的高乙醇氧化反应活性和21.2 kJ mol的低活化能，与文献中报道的最先进的电催化剂相当。同时，PdCuNiP多孔纳米片对其他燃料（甲醇、甘油和葡萄糖）的电化学氧化具有电催化活性，突出了它们在各种直接醇类燃料电池中的巨大潜力。本文报道的研究结果可能为设计用于各种燃料电池电催化及其他领域的新型功能电催化剂提供一些见解。
