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A Large-Scalable, Surfactant-Free, and Ultrastable Ru-Doped Pt3Co Oxygen Reduction Catalyst.
Zhu, Yiming; Peng, Jiaheng; Zhu, Xiaorong; Bu, Lingzheng; Shao, Qi; Pao, Chih-Wen; Hu, Zhiwei; Li, Yafei; Wu, Jianbo; Huang, Xiaoqing.
Affiliation
  • Zhu Y; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Peng J; College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
  • Zhu X; State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Center of Hydrogen Science, Materials Genome Initiative Center, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Bu L; 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.
  • Shao Q; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Pao CW; College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
  • Hu Z; National Synchrotron Radiation Research Center, 101 Hsin-Ann Road, Hsinchu 30076, Taiwan.
  • Li Y; Max Plank Institute for Chemical Physics of Solids, Nothnitzer Strasse 40, Dresden 01187, Germany.
  • Wu J; 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.
  • Huang X; State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Center of Hydrogen Science, Materials Genome Initiative Center, Shanghai Jiao Tong University, Shanghai 200240, China.
Nano Lett ; 21(15): 6625-6632, 2021 Aug 11.
Article in En | MEDLINE | ID: mdl-34319751
ABSTRACT
Developing a large-scale method to produce platinum (Pt)-based electrocatalysts for the oxygen reduction reaction (ORR) is highly desirable to propel the commercialization of the membrane electrode assembly (MEA). Here, we successfully report the large-scale production of surfactant-free ruthenium-doped Pt-cobalt octahedra grown on carbon (Ru-Pt3Co/C), which display a much higher ORR activity and stability and MEA stability than Pt3Co/C and Pt/C. Significantly, the in-situ X-ray absorption fine structure result reveals that Ru can drive the reduced Pt atoms to reverse to their initial state after the ORR by transferring a redundant electron from Pt to Ru, preventing the over-reduction of Pt active sites and boosting the chemical stability. Theory investigations further confirm that the doped Ru can accelerate the breach and desorption of oxygen intermediates, making it active and durable for the ORR. The present work sheds light on the exploration of a large-scale strategy for producing advanced Pt-based nanocatalysts, which may offer significant advantages for practical fuel cell applications in the future.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nano Lett Year: 2021 Type: Article Affiliation country: China
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nano Lett Year: 2021 Type: Article Affiliation country: China