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Blocking Metal Nanocluster Growth through Ligand Coordination and Subsequent Polymerization: The Case of Ruthenium Nanoclusters as Robust Hydrogen Evolution Electrocatalysts.
Wang, Xiaohong; Li, DongXu; Dai, Juguo; Xue, Qian; Yang, Chunying; Xia, Long; Qi, Xueqiang; Bao, Bingtao; Yang, Siyu; Xu, Yiting; Yuan, Conghui; Luo, Weiang; Cabot, Andreu; Dai, Lizong.
Affiliation
  • Wang X; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Li D; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Dai J; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Xue Q; Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, Catalonia, 08930, Spain.
  • Yang C; College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China.
  • Xia L; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Qi X; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Bao B; Catalonia Institute for Energy Research (IREC), Sant Adrià de Besòs, Barcelona, Catalonia, 08930, Spain.
  • Yang S; College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China.
  • Xu Y; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Yuan C; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Luo W; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Cabot A; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
  • Dai L; College of Materials, Fujian Provincial Key Laboratory of Fire Retardant Materials, Xiamen Key Laboratory of Fire Retardant Materials, Xiamen University, Xiamen, 361005, China.
Small ; 20(22): e2309176, 2024 May.
Article in En | MEDLINE | ID: mdl-38150625
ABSTRACT
Metal nanoclusters providing maximized atomic surface exposure offer outstanding hydrogen evolution activities but their stability is compromised as they are prone to grow and agglomerate. Herein, a possibility of blocking metal ion diffusion at the core of cluster growth and aggregation to produce highly active Ru nanoclusters supported on an N, S co-doped carbon matrix (Ru/NSC) is demonstrated. To stabilize the nanocluster dispersion, Ru species are initially coordinated through multiple Ru─N bonds with N-rich 4'-(4-aminophenyl)-2,26',2''-terpyridine (TPY-NH2) ligands that are subsequently polymerized using a Schiff base. After the pyrolysis of the hybrid composite, highly dispersed ultrafine Ru nanoclusters with an average size of 1.55 nm are obtained. The optimized Ru/NSC displays minimal overpotentials and high turnover frequencies, as well as robust durability both in alkaline and acidic electrolytes. Besides, outstanding mass activities of 3.85 A mg-1 Ru at 50 mV, i.e., 16 fold higher than 20 wt.% Pt/C are reached. Density functional theory calculations rationalize the outstanding performance by revealing that the low d-band center of Ru/NSC allows the desorption of *H intermediates, thereby enhancing the alkaline HER activity. Overall, this work provides a feasible approach to engineering cost-effective and robust electrocatalysts based on carbon-supported transition metal nanoclusters for future energy technologies.
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Small Journal subject: ENGENHARIA BIOMEDICA Year: 2024 Type: Article Affiliation country: China

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Small Journal subject: ENGENHARIA BIOMEDICA Year: 2024 Type: Article Affiliation country: China