scholarly journals Graphene/nitrogen-doped porous carbon sandwiches for the metal-free oxygen reduction reaction: conductivity versus active sites

2016 ◽  
Vol 4 (32) ◽  
pp. 12658-12666 ◽  
Author(s):  
M. Qiao ◽  
C. Tang ◽  
G. He ◽  
K. Qiu ◽  
R. Binions ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Porous Carbon ◽  
Active Sites ◽  
Electronic Conductivity ◽  
Hydrothermal Carbonization ◽  
Reduction Reaction ◽  
Active Nitrogen ◽  
Free Oxygen ◽  
Nitrogen Doped ◽  
Metal Free

Graphene/nitrogen-doped porous carbon sandwiches were prepared by hydrothermal carbonization. Once the electronic conductivity in the carbon–carbon hybrids reaches a certain value, the performance is controlled by the active nitrogen sites.

scholarly journals High-performance electrocatalyst based on polyazine derived mesoporous nitrogen-doped carbon for oxygen reduction reaction

RSC Advances ◽  
2021 ◽  
Vol 11 (47) ◽  
pp. 29555-29563
Author(s):  
Songlin Zhao ◽  
Fushan Chen ◽  
Qunfeng Zhang ◽  
Lingtao Meng
Keyword(s):  
Renewable Energy ◽  
Oxygen Reduction Reaction ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Energy Conversion Systems ◽  
Nitrogen Doped Carbon

Nitrogen-doped porous carbon materials have high potential in metal-free electrocatalysts, which is essential for several renewable energy conversion systems.

scholarly journals Shale-oil-based nitrogen-doped porous carbon as efficient metal-free electrocatalyst for oxygen reduction reaction

2020 ◽  
Vol 146 ◽  
pp. 106131
Author(s):  
Xiaobo Chen ◽  
Zhiqiang Li ◽  
Rumeng Qin ◽  
Shengjie Shan ◽  
Yibin Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Shale Oil ◽  
Nitrogen Doped ◽  
Metal Free

Red-blood-cell-like nitrogen-doped porous carbon as an efficient metal-free catalyst for oxygen reduction reaction

2019 ◽  
Vol 26 (6) ◽  
pp. 1458-1468 ◽  
Author(s):  
Li-ping Wang ◽  
Jing Tian ◽  
Jing-sha Li ◽  
Xian-guang Zeng ◽  
Zhi-guang Peng ◽  
...  
Keyword(s):  
Blood Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Red Blood Cell ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free

Template-free synthesis of polyacrylonitrile-derived porous carbon nanoballs on graphene for efficient oxygen reduction in zinc–air batteries

2021 ◽  
Vol 9 (15) ◽  
pp. 9644-9654
Author(s):  
Halima Begum ◽  
Mohammad Shamsuddin Ahmed ◽  
Seunghun Jung
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Active Sites ◽  
Reduction Reaction ◽  
Metal Free ◽  
Template Free ◽  
Energy Conversion Devices ◽  
Zinc Air Batteries

Introducing abundant active sites and improving their activity are two critical considerations for designing metal-free nitrogenous electrocatalysts for the oxygen reduction reaction (ORR) in energy conversion devices such as metal–air batteries and fuel cells.

Combustion reaction-derived nitrogen-doped porous carbon as an effective metal-Free catalyst for the oxygen reduction reaction

Energy ◽  
2018 ◽  
Vol 152 ◽  
pp. 333-340 ◽  
Author(s):  
Wenjing Yuan ◽  
Anjian Xie ◽  
Ping Chen ◽  
Fangzhi Huang ◽  
Shikuo Li ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Combustion Reaction ◽  
Nitrogen Doped ◽  
Metal Free

Biomass-derived hierarchical honeycomb-like porous carbon tube catalyst for the metal-free oxygen reduction reaction

2019 ◽  
Vol 847 ◽  
pp. 113230 ◽  
Author(s):  
Jiahuan Tang ◽  
Yajun Wang ◽  
Wenqi Zhao ◽  
Raymond Jianxiong Zeng ◽  
Ting Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Free Oxygen ◽  
Metal Free ◽  
Carbon Tube

scholarly journals Molten-Salt-Assisted Synthesis of Nitrogen-Doped Carbon Nanosheets Derived from Biomass Waste of Gingko Shells as Efficient Catalyst for Oxygen Reduction Reaction

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2124
Author(s):  
Wei Hong ◽  
Xia Wang ◽  
Hongying Zheng ◽  
Rong Li ◽  
Rui Wu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Capacity ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Biomass Waste ◽  
Active Nitrogen ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Hierarchical Porous

Developing superior efficient and durable oxygen reduction reaction (ORR) catalysts is critical for high-performance fuel cells and metal–air batteries. Herein, we successfully prepared a 3D, high-level nitrogen-doped, metal-free (N–pC) electrocatalyst employing urea as a single nitrogen source, NaCl as a fully sealed nanoreactor and gingko shells, a biomass waste, as carbon precursor. Due to the high content of active nitrogen groups, large surface area (1133.8 m2 g−1), and 3D hierarchical porous network structure, the as-prepared N–pC has better ORR electrocatalytic performance than the commercial Pt/C and most metal-free carbon materials in alkaline media. Additionally, when N–pC was used as a catalyst for an air electrode, the Zn–air battery (ZAB) had higher peak power density (223 mW cm−2), larger specific-capacity (755 mAh g−1) and better rate-capability than the commercial Pt/C-based one, displaying a good application prospect in metal-air batteries.

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