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.

Low-cost sonochemical synthesis of nitrogen-doped graphene metal-free electrocatalyst for the oxygen reduction reaction in alkaline media

2017 ◽  
Vol 42 (51) ◽  
pp. 30330-30338 ◽  
Author(s):  
I.L. Alonso-Lemus ◽  
M.Z. Figueroa-Torres ◽  
A.B. García-Hernández ◽  
B. Escobar-Morales ◽  
F.J. Rodríguez-Varela ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Sonochemical Synthesis ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

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.

scholarly journals N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 864 ◽  
Author(s):  
Zhenhua Yao ◽  
Ruiyang Fan ◽  
Wangyang Ji ◽  
Tingxuan Yan ◽  
Maocong Hu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Temperature Programmed ◽  
Nitrogen Doped Carbon

In this work, non-traditional metal-free polynitrogen chain N8− deposited on a nitrogen-doped carbon nanotubes (PN-NCNT) catalyst was successfully synthesized by a facile cyclic voltammetry (CV) approach, which was further tested in an oxygen reduction reaction (ORR). The formation of PN on NCNT was confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy. Partial positive charge of carbon within NCNT facilitated electron transfer and accordingly induced the formation of more PN species compared to CNT substrate as determined by temperature-programmed decomposition (TPD). Rotating disk electrode (RDE) measurements suggested that a higher current density was achieved over PN-NCNT than that on PN-CNT catalyst, which can be attributed to formation of the larger amount of N8− on NCNT. Kinetic study suggested a four-electron pathway mechanism over PN-NCNT. Moreover, it showed long stability and good methanol tolerance, which indicates its great potential application. This work provides insights on designing and synthesizing non-traditional metal-free catalysts for ORR in fuel cells.

Nitrogen doped amorphous carbon as metal free electrocatalyst for oxygen reduction reaction

2017 ◽  
Vol 42 (2) ◽  
pp. 876-885 ◽  
Author(s):  
Linmin Cao ◽  
Zhipeng Lin ◽  
Jilin Huang ◽  
Xiang Yu ◽  
Xiaoxian Wu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Amorphous Carbon ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free

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

scholarly journals Noble-Metal-Free Iron Nitride/Nitrogen-Doped Graphene Composite for the Oxygen Reduction Reaction

ACS Omega ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 130-139 ◽  
Author(s):  
Tamás Varga ◽  
Lívia Vásárhelyi ◽  
Gergő Ballai ◽  
Henrik Haspel ◽  
Albert Oszkó ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
Reduction Reaction ◽  
Iron Nitride ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Graphene Composite ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

N-Doped holey carbon materials derived from a metal-free macrocycle cucurbit[6]uril assembly as an efficient electrocatalyst for the oxygen reduction reaction

2019 ◽  
Vol 55 (92) ◽  
pp. 13832-13835 ◽  
Author(s):  
Dongshuang Wu ◽  
Minna Cao ◽  
Hanhui You ◽  
Chuan Zhao ◽  
Rong Cao
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Self Assembly ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free

The first example of the preparation of nitrogen-doped holey carbon (NHC) with abundant in-plane holes derived from a rigid macrocycle cucurbit[6]uril self-assembly is reported.

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