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Tailoring Eletronic Structure of Pd nanoparticles via MnO2 as Electron Transfer Intermediate for Enhanced Hydrogen Evolution Reaction
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-03-24 , DOI: 10.1016/j.cplett.2020.137405
Qiang Wu , Bin Wang , Zhongqing Liu

TiO2 nanoarrays (TNAs) prepared via anodic oxidation of Ti substrates were used as the support to manufacture Pd–MnO2/TNAs composite by using successive electrodepositions. It greatly enhanced the electron transport between the Pd and MnO2/TNAs composite support. In acidic media, the overpotentials of the electrodes were only 63 and 92 mV under 10 and 20 mA cm–2, respectively. After stable testing, the activity did not decline. It demonstrates the utilization of metal oxides as the intermediate to improve the electron transport behavior of TNAs. New potential pathways may be derived to assemble highly efficient hydrogen evolution reaction (HER) composite electrodes.



中文翻译:

以MnO 2为电子转移中间体修饰Pd纳米粒子的电子结构以增强析氢反应。

通过阳极氧化钛基板制备的TiO 2纳米阵列(TNAs)被用作载体,通过连续的电沉积制备Pd-MnO 2 / TNAs复合材料。它大大增强了Pd和MnO 2 / TNAs复合载体之间的电子传输。在酸性介质中,在10和20 mA cm –2下,电极的过电势分别仅为63和92 mV 。经过稳定的测试,活性没有下降。它证明了利用金属氧化物作为中间体来改善TNA的电子传输行为。可以推导新的潜在途径来组装高效的氢析出反应(HER)复合电极。

更新日期:2020-03-24
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