期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 307, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121172
关键词
Interface engineering; Pd metallene; Polyaniline modification; Electrocatalysis; Oxygen reduction reaction
资金
- National Natural Science Foundation of China [21776255, 21972126, 21978264, 21905250]
- China Postdoctoral Science Foundation [2021M702889]
- Natural Science Foundation of Zhejiang Province [LQ22B030012]
The Pd@PANI metallene prepared by interface engineering strategy exhibits superior oxygen reduction performance and long-term stability in alkaline electrolyte.
Engineering the interface between two-dimensional materials and polymers is of great importance to improve their catalytic performance for oxygen reduction reaction (ORR). Hence, polyaniline (PANI)-functionalized porous Pd metallene (Pd@PANI metallene) is prepared via a two-step strategy. Due to the ultrathin porous nanosheets and interfacial structure, the Pd@PANI metallene possesses sufficient active sites and optimized electronic structure, which exhibits superior oxygen reduction performance in alkaline electrolyte. The mass and specific activities for Pd@PANI metallene are measured to 1.79 A mgPd(-1) and 2.96 mA cm(-2) , which are 11.9 and 9.30 times those of Pt/C (0.15 A mgPd(-1) and 0.32 mA cm(-2)), respectively. Additionally, the ORR performance and morphology of Pd@PANI metallene can be maintained after long-term stability testing, making it an excellent ORR catalyst. This work provides an effective interface engineering strategy to construct efficient two-dimensional ORR electrocatalysts to improve the performance.
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