A Robust PtNi Nanoframe/N-Doped Graphene Aerogel Electrocatalyst with Both High Activity and Stability.

Yang, Jing; Hübner, René; Zhang, Jiangwei; Wan, Hao; Zheng, Yuanyuan; Wang, Honglei; Qi, Haoyuan; He, Lanqi; Li, Yi; Dubale, Amare Aregahegn; Sun, Yujing; Liu, Yuting; Peng, Daoling; Meng, Yuezhong; Zheng, Zhikun; Rossmeisl, Jan; Liu, Wei

Yang, Jing; Hübner, René; Zhang, Jiangwei; Wan, Hao; Zheng, Yuanyuan; Wang, Honglei; Qi, Haoyuan; He, Lanqi; Li, Yi; Dubale, Amare Aregahegn; Sun, Yujing; Liu, Yuting; Peng, Daoling; Meng, Yuezhong; Zheng, Zhikun; Rossmeisl, Jan; Liu, Wei.

Afiliación

Yang J; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Hübner R; Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328, Dresden, Germany.
Zhang J; State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, P. R. China.
Wan H; Center for High Entropy Alloy Catalysis (CHEAC), Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark.
Zheng Y; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Wang H; Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Qi H; Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technical University of Dresden, 01069, Dresden, Germany.
He L; Central Facility of Electron Microscopy, Electron Microscopy Group of Materials Science, Universität Ulm, 89081, Ulm, Germany.
Li Y; Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Dubale AA; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Sun Y; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Liu Y; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Peng D; School of Chemistry, South China Normal University, Guangzhou, 510006, China.
Meng Y; School of Chemistry, South China Normal University, Guangzhou, 510006, China.
Zheng Z; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials Science and Engineering, Sun Ya
Rossmeisl J; Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry, and State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
Liu W; Center for High Entropy Alloy Catalysis (CHEAC), Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark.

Angew Chem Int Ed Engl ; 60(17): 9590-9597, 2021 Apr 19.

Article en En | MEDLINE | ID: mdl-33554402

ABSTRACT

ABSTRACT

Insufficient catalytic activity and stability and high cost are the barriers for Pt-based electrocatalysts in wide practical applications. Herein, a hierarchically porous PtNi nanoframe/N-doped graphene aerogel (PtNiNF-NGA) electrocatalyst with outstanding performance toward methanol oxidation reaction (MOR) in acid electrolyte has been developed via facile tert-butanol-assisted structure reconfiguration. The ensemble of high-alloying-degree-modulated electronic structure and correspondingly the optimum MOR reaction pathway, the structure superiorities of hierarchical porosity, thin edges, Pt-rich corners, and the anchoring effect of the NGA, endow the PtNiNF-NGA with both prominent electrocatalytic activity and stability. The mass and specific activity (1647âmA mgPt -1 , 3.8âmA cm-2 ) of the PtNiNF-NGA are 5.8 and 7.8 times higher than those of commercial Pt/C. It exhibits exceptional stability under a 5-hour chronoamperometry test and 2200-cycle cyclic voltammetry scanning.

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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2021 Tipo del documento: Article