Optimized Synthesis of Nitrogen and Phosphorus Dual-Doped Coal-Based Carbon Fiber Supported Pd Catalyst with Enhanced Activities for Formic Acid Electrooxidation

Mengran Lou; Ruiying Wang; Jie Zhang; Xincun Tang; Luxiang Wang; Yong Guo; Dianzeng Jia; Hongli Shi; Lili Yang; Xingchao Wang; Zhipeng Sun; Tao Wang; Yudai Huang

doi:10.1021/acsami.8b20736

Optimized Synthesis of Nitrogen and Phosphorus Dual-Doped Coal-Based Carbon Fiber Supported Pd Catalyst with Enhanced Activities for Formic Acid Electrooxidation

ACS Appl Mater Interfaces. 2019 Feb 13;11(6):6431-6441. doi: 10.1021/acsami.8b20736. Epub 2019 Jan 29.

Authors

Mengran Lou¹, Ruiying Wang^{1

2}, Jie Zhang¹, Xincun Tang³, Luxiang Wang¹, Yong Guo^{1

2}, Dianzeng Jia¹, Hongli Shi¹, Lili Yang¹, Xingchao Wang^{1

2}, Zhipeng Sun¹, Tao Wang^{1

2}, Yudai Huang¹

Affiliations

¹ Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry , Xinjiang University , Urumqi , Xinjiang 830046 , P. R. China.
² Physics and Chemistry Detecting Center , Xinjiang University , Urumqi , Xinjiang 830046 , P. R. China.
³ College of Chemistry and Chemical Engineering , Central South University , Changsha , Hunan 410083 , P. R. China.

PMID: 30640425
DOI: 10.1021/acsami.8b20736

Abstract

Development of a Pd-based catalyst with highly active and durable properties for formic acid oxidation reaction at the anode remains an important matter of interest in the research community. Herein, we have designed novel coal-based carbon fibers (Coal-CFs) with dicyandiamide (DCD) as nitrogen (N) source, triphenylphosphine (TPP) as phosphorus (P) source dual-doped to support Pd catalysts (Pd/NP-Coal-CFs(DCD/TPP)), which exhibit superior catalytic performance toward formic acid oxidation reaction. Mass activity of formic acid oxidation of Pd/NP-Coal-CFs(DCD/TPP) catalyst is 536.6 mA·mg^-1_Pd, which is 2.5 times higher than that of Pd/Coal-CFs catalyst. The higher specific surface areas, exclusive electron transport path, and the high synergistic interaction of N and P are the favorable phenomena for catalytic performance. The addition of coal not only increases the abundant defects sites but also makes the utilization of coal with high added value. This N and P dual-doped catalyst inspires an idea for promoting applications in practical fuel cells.

Keywords: Pd catalysts; coal-based carbon fibers; direct formic acid fuel cell; electrooxidation; nitrogen and phosphorus dual-doped.