DataVXAdvanced MaterialsPaper
journal article·2022-12

Pd–Sb Rhombohedra with an Unconventional Rhombohedral Phase as a Trifunctional Electrocatalyst

Bingyan Xu, Tianyang Liu, Xiaocong Liang, Wenjie Dou, Hongbo Geng, Zhiyang Yu, Yafei Li, Ying Zhang, Qi Shao, Jingmin Fan, Xiaoqing Huang

Advanced Materials· Volume 34· Issue 50
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Source abstract

Abstract

Abstract Crystal phase engineering is an important strategy for designing noble‐metal‐based catalysts with optimized activity and stability. From the thermodynamic point of view, it remains a great challenge to synthesize unconventional phases of noble metals. Here, a new class of Pd‐based nanostructure with unconventional rhombohedral Pd20Sb7 phase is successfully synthesized. Benefiting from the high proportion of the unique exposed Pd20Sb7 (003) surface, Pd20Sb7 rhombohedra display much enhanced ethanol oxidation reaction (EOR) and oxygen reduction reaction performance compared with commercial Pd/C. Moreover, Pd20Sb7 rhombohedra are also demonstrated as an effective air cathode in non‐aqueous Li–air batteries with an overpotential of only 0.24 V. Density functional theory calculations reveal that the unique exposed facets of Pd20Sb7 rhombohedra can not only reduce the excessive adsorption of CH3CO* to CH3COOH on Pd for promoting EOR process, but also weaken CO binding and CO poisoning. This work provides a new class of unconventional intermetallic nanomaterials with enhanced electrocatalytic activity.
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Research context

Energy storageMetals & alloysNanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Nanomaterials for catalytic reactions · Advancements in Battery Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials Science Nanjing Normal University Nanjing 210023 China

State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 China

School of Materials Engineering Changshu Institute of Technology Changshu 215500 China

Institute for Carbon Neutralization College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China

College of Chemistry Chemical Engineering and Materials Science Soochow University Jiangsu 215123 China

Funding

National Natural Science Foundation of China · Xiamen University

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