Interface functionalization of mesoporous ruthenium films with polyaniline for enhanced hydrogen evolution electrocatalysis at all pH values,Journal of Materials Chemistry A

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Interface functionalization of mesoporous ruthenium films with polyaniline for enhanced hydrogen evolution electrocatalysis at all pH values
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2ta03358e
Zhongyao Duan ₁ , Mei Zhang ₁ , Lin Cui ₁ , Hongjie Yu ₁ , Kai Deng ₁ , You Xu ₁ , Ziqiang Wang ₁ , Liang Wang ₁ , Hongjing Wang ₁

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The design of electrocatalysts with favorable morphologies and surface compositions is an effective strategy to prepare electrocatalysts for the hydrogen evolution reaction (HER). Herein, a polyaniline (PANI) modified mesoporous ruthenium film supported on carbon paper (mRu@PANI/CP) was successfully synthesized by a two-step electrodeposition method at room temperature. With the mesoporous film structure and PANI modification, mRu@PANI/CP displayed superior HER catalytic activity with overpotentials of 30 mV (0.5 M H₂SO₄), 27 mV (1.0 M KOH), and 24 mV (1.0 M PBS), respectively, at a current density of 10 mA cm⁻². This work not only provides a powerful route to prepare a mesoporous Ru film, but also offers a useful interface functionalization strategy to further enhance its electrocatalytic performance, beyond the HER.

中文翻译：

介孔钌膜与聚苯胺的界面功能化增强所有 pH 值下的析氢电催化

设计具有良好形貌和表面组成的电催化剂是制备析氢反应（HER）电催化剂的有效策略。在此，通过两步电沉积法在室温下成功合成了负载在碳纸上的聚苯胺（PANI）改性介孔钌膜（mRu@PANI/CP）。通过介孔薄膜结构和 PANI 修饰，mRu@PANI/CP 表现出优异的 HER 催化活性，过电位分别为 30 mV (0.5 MH ₂ SO ₄ )、27 mV (1.0 M KOH) 和 24 mV (1.0 M PBS) , 在 10 mA cm ^{-2的电流密度下}. 这项工作不仅为制备介孔Ru薄膜提供了一条强有力的途径，而且还提供了一种有用的界面功能化策略，以进一步提高其超越HER的电催化性能。

更新日期：2022-06-13

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