In situ nanopores enrichment of Mesh-like palladium nanoplates for bifunctional fuel cell reactions: A joint etching strategy

Jie Li; Zhangyu Zhou; Hui Xu; Cheng Wang; Shinichi Hata; Zhongxu Dai; Yukihide Shiraishi; Yukou Du

doi:10.1016/j.jcis.2021.12.111

In situ nanopores enrichment of Mesh-like palladium nanoplates for bifunctional fuel cell reactions: A joint etching strategy

J Colloid Interface Sci. 2022 Apr:611:523-532. doi: 10.1016/j.jcis.2021.12.111. Epub 2021 Dec 21.

Authors

Jie Li¹, Zhangyu Zhou², Hui Xu³, Cheng Wang¹, Shinichi Hata⁴, Zhongxu Dai⁵, Yukihide Shiraishi⁴, Yukou Du⁶

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
² College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, PR China.
³ Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Jiangsu Key Laboratory of Oil and Gas Storage & Transportation Technology, Changzhou University, Jiangsu 213164, China.
⁴ Department of Applied Chemistry, Faculty of Engineering, Sanyo-Onoda City University, Sanyo-Onoda, Yamaguchi 756-0884, Japan.
⁵ College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, PR China. Electronic address: daizx@ctgu.edu.cn.
⁶ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China. Electronic address: duyk@suda.edu.cn.

PMID: 34971963
DOI: 10.1016/j.jcis.2021.12.111

Abstract

Two-dimensional (2D) nanomaterials with nanopore display an enhancement effect on electrocatalysis behavior, whereas the nanopore engineering for 2D nanocatalysts remains an insurmountable challenge. We advance the synthesis of multilayer Pd nanoplates (Pd NPs) and two types of meshy nanoplates (Pd LMNPs/MNPs) with escalating nanopores from none and sparse to porous. Specially, an in situ nanopore enrichment on these Pd nanoplates hinges on a joint etching strategy with integrated manipulation of reaction kinetics. The optimized Pd MNPs exhibit exceptional oxygen reduction reaction performance, owing to the enhanced intermediates protonation on Pd site neighboring nanopore, which has been elucidated by density functional theory calculations. In addition, Pd MNPs also deliver excellent performances in fuel cell anodic reactions, including ethanol oxidation reaction and formic acid oxidation reaction. This study highlights a new strategy for in situ nanopores engineering, providing a prospect for designing superior nanocatalysts.

Keywords: Bifunctional fuel cell reactions; In situ nanopores enrichment; Joint etching strategy.

MeSH terms

Nanopores*
Palladium*

Substances

Palladium