Largely boosted methanol electrooxidation using ionic liquid/PdCu aerogels via interface engineering,Materials Horizons

当前位置： X-MOL 学术 › Mater. Horiz. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Largely boosted methanol electrooxidation using ionic liquid/PdCu aerogels via interface engineering
Materials Horizons ( IF 12.2 ) Pub Date : 2020-06-23 , DOI: 10.1039/d0mh00646g
Hengjia Wang _{1,

2,

3,

4,

5} , Songlin Zhang _{6,

7,

8,

8,

9} , Weiwei Cai _{10,

11,

12,

13,

14} , Bo Z. Xu _{9,

15,

16,

17} , Zhixiang Cai _{6,

7,

8,

8,

9} , Yu Wu _{1,

2,

3,

4,

5} , Xin Luo _{1,

2,

3,

4,

5} , Xiaoqian Wei _{1,

2,

3,

4,

5} , Zhao Liu _{10,

11,

12,

13,

14} , Wenling Gu _{1,

2,

3,

4,

5} , Alexander Eychmüller _{18,

19,

20,

21} , Chengzhou Zhu _{1,

2,

3,

4,

5} , Jun Chen _{6,

7,

8,

8,

9}

Affiliation

Key Laboratory of Pesticide and Chemical Biology of Ministry of Education
International Joint Research Center for Intelligent Biosensing Technology and Health
College of Chemistry
Central China Normal University
Wuhan 430079
Department of Bioengineering
University of California
Los Angeles
USA
Sustainable Energy Laboratory
Faculty of Materials Science and Chemistry
China University of Geosciences
Wuhan 430074
People's Republic of China
School of Mechanical and Materials Engineering
Washington State University
Pullman
Physikalische Chemie
Technische Universität Dresden
01062 Dresden
Germany

Tuning electrocatalysts via interface engineering is widely adopted as a valid way to manipulate the electrocatalytic activity. Herein, the interface engineering of PdCu aerogels is successfully achieved by the integration of an ionic liquid (IL), which not only accelerates the gelation kinetics but also leads to the modulation of the interface electronic properties, enabling IL functionalized PdCu aerogels (IL/PdCu) as advanced electrocatalysts for the methanol oxidation reaction (MOR) with splendid electrocatalytic activity. Density functional theory (DFT) calculations also demonstrate that IL-involved interface engineering dramatically reduces the chemisorption energy of CO-containing intermediates and thus significantly boosts the MOR performance. Furthermore, direct methanol fuel cells (DMFCs) using an IL/Pd₃Cu₁ anode catalyst exhibit a higher power density than those containing Pd₃Cu₁ and commercial Pd catalysts. This work highlights the superiority of designing advanced electrocatalysts by interface engineering.

中文翻译：

使用离子液体/ PdCu气凝胶通过界面工程大大增强了甲醇的电氧化作用

通过以下方法调节电催化剂界面工程被广泛用作控制电催化活性的有效方法。在此，通过集成离子液体（IL）成功实现了PdCu气凝胶的界面工程，这不仅加速了凝胶化动力学，而且还导致了界面电子性能的调节，从而实现了IL功能化的PdCu气凝胶（IL / PdCu ）作为具有出色电催化活性的甲醇氧化反应（MOR）的高级电催化剂。密度泛函理论（DFT）的计算还表明，涉及IL的界面工程极大地降低了含CO中间体的化学吸附能，从而显着提高了MOR性能。此外，使用IL / Pd ₃ Cu _1的直接甲醇燃料电池（DMFC）阳极催化剂比包含Pd ₃ Cu ₁和市售Pd催化剂的功率密度更高。这项工作突出了通过界面工程设计高级电催化剂的优越性。

更新日期：2020-09-01

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11