Carbon nanotube/S–N–C nanohybrids as high performance bifunctional electrocatalysts for both oxygen reduction and evolution reactions

2015 ◽  
Vol 39 (8) ◽  
pp. 6289-6296 ◽  
Author(s):  
Qing Zhu ◽  
Ling Lin ◽  
Yi-Fan Jiang ◽  
Xiao Xie ◽  
Cheng-Zong Yuan ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
High Performance ◽  
Free Carbon ◽  
Facile Synthesis ◽  
Metal Free ◽  
Bifunctional Electrocatalysts

We report a facile synthesis of metal-free carbon nanotube/S–N–C nanohybrids for both oxygen reduction and evolution reactions.

scholarly journals Pyridinic and graphitic nitrogen-rich graphene for high-performance supercapacitors and metal-free bifunctional electrocatalysts for ORR and OER

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 17950-17958 ◽  
Author(s):  
Shaikh Nayeem Faisal ◽  
Enamul Haque ◽  
Nikan Noorbehesht ◽  
Weimin Zhang ◽  
Andrew T. Harris ◽  
...  
Keyword(s):  
High Performance ◽  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Bifunctional Electrocatalysts ◽  
Capacitance Performance ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Synthesized Materials ◽  
Pyridinic N

A facile synthesis of nitrogen-doped graphene with high atomic percentages of pyridinic N and graphitic N is reported. The synthesized materials show superior capacitance performance and metal-free bifunctional electrocatalysis of ORR and OER.

Polyelectrolyte–single wall carbon nanotube composite as an effective cathode catalyst for air-cathode microbial fuel cells

2014 ◽  
Vol 70 (10) ◽  
pp. 1610-1616 ◽  
Author(s):  
Huanan Wu ◽  
Min Lu ◽  
Lin Guo ◽  
Leonard Guan Hong Bay ◽  
Zheng Zhang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Reduction Process ◽  
Air Cathode ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Cathode Catalysts ◽  
Metal Free

Polyelectrolyte–single wall carbon nanotube (SCNT) composites are prepared by a solution-based method and used as metal-free cathode catalysts for oxygen reduction reaction (ORR) in air-cathode microbial fuel cells (MFCs). In this study, two types of polyelectrolytes, polydiallyldimethylammonium chloride (PDDA) and poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] (PEPU) are applied to decorate the SCNTs and the resulting catalysts exhibit remarkable catalytic ability toward ORR in MFC applications. The enhanced catalytic ability could be attributed to the positively charged quaternary ammonium sites of polyelectrolytes, which increase the oxygen affinity of SCNTs and reduce activation energy in the oxygen reduction process. It is also found that PEPU–SCNT composite-based MFCs show efficient performance with maximum power density of 270.1 mW m−2, comparable to MFCs with the benchmark Pt/C catalyst (375.3 mW m−2), while PDDA–SCNT composite-based MFCs produce 188.9 mW m−2. These results indicate that PEPU–SCNT and PDDA–SCNT catalysts are promising candidates as metal-free cathode catalysts for ORR in MFCs and could facilitate MFC scaling up and commercialization.

Edge-Segregated Ternary Pd-Pt-Ni Spiral Nanosheets as High-Performance Bifunctional Oxygen Redox Electrocatalysts for Rechargeable Zinc−Air Batteries

2022 ◽  
Author(s):  
Kai Liu ◽  
Hongpu Huang ◽  
Yuxin Zhu ◽  
Zixi Lyu ◽  
Shupeng Wang ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
High Performance ◽  
Rational Design ◽  
Bifunctional Electrocatalysts ◽  
Working Efficiency ◽  
Zinc Air Batteries

Rational design of high-perfomance bifunctional electrocatalysts to simultaneously accelerate the sluggish reversible oxygen reduction and evolution reactions (ORR and OER) is an enormous challenge that restricts the working efficiency and...

Egg derived nitrogen-self-doped carbon/carbon nanotube hybrids as noble-metal-free catalysts for oxygen reduction

2014 ◽  
Vol 271 ◽  
pp. 522-529 ◽  
Author(s):  
Jian Zhang ◽  
Siyu Wu ◽  
Xu Chen ◽  
Mu Pan ◽  
Shichun Mu
Keyword(s):  
Carbon Nanotube ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
Metal Free

NaCl protected synthesis of 3D hierarchical metal-free porous nitrogen-doped carbon catalysts for the oxygen reduction reaction in acidic electrolyte

2019 ◽  
Vol 55 (61) ◽  
pp. 9023-9026 ◽  
Author(s):  
Rui Wu ◽  
Xiaoju Wan ◽  
Jianghai Deng ◽  
Xun Huang ◽  
Siguo Chen ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Porous Metal ◽  
Reduction Reaction ◽  
Protective Agent ◽  
Metal Free ◽  
Hierarchical Porous ◽  
Carbon Catalysts ◽  
Nitrogen Doped Carbon

A high-performance 3D hierarchical porous metal-free N-doped carbon catalyst for oxygen reduction reaction in acidic medium was synthesized with ZnO as a mesoporous template and NaCl as both a macroporous template and a structure protective agent.

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