Enhancing the oxygen reduction reaction with three-dimensional graphene hollow nanosphere supported single-atomic cobalt catalyst

2020 ◽  
Vol 7 (18) ◽  
pp. 3475-3481
Author(s):  
Ji-Sen Li ◽  
Meng-Jie Huang ◽  
Xiao-Nan Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Cobalt Catalyst ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Hollow Nanosphere ◽  
Methanol Tolerance ◽  
Long Term Stability

Three-dimensional graphene hollow nanospheres supported single-atomic cobalt catalyst shows superior electrocatalytic activity, long-term stability, and excellent methanol tolerance for the oxygen reduction reaction in alkaline media.

scholarly journals Synergistic enhancement of nitrogen and sulfur co-doped graphene with carbon nanosphere insertion for the electrocatalytic oxygen reduction reaction

2015 ◽  
Vol 3 (15) ◽  
pp. 7727-7731 ◽  
Author(s):  
Min Wu ◽  
Jie Wang ◽  
Zexing Wu ◽  
Huolin L. Xin ◽  
Deli Wang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Methanol Tolerance ◽  
Long Term Stability ◽  
Synergistic Enhancement ◽  
Electrocatalytic Oxygen Reduction ◽  
Doped Graphene ◽  
Co Doped

A nitrogen and sulfur co-doped graphene/carbon black nanocomposite with high electrocatalytic activity for the oxygen reduction reaction and superior long-term stability and methanol tolerance compared to commercial Pt/C.

scholarly journals Highly active and stable AuNi dendrites as an electrocatalyst for the oxygen reduction reaction in alkaline media

2016 ◽  
Vol 4 (45) ◽  
pp. 17828-17837 ◽  
Author(s):  
Jiali Wang ◽  
Fuyi Chen ◽  
Yachao Jin ◽  
Roy L. Johnston
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Term Stability ◽  
Long Term Stability ◽  
Highly Active ◽  
Orr Activity

AuNi hierarchical dendrites were fabricated by a facile electrodeposition and dealloying method with exceptional ORR activity and remarkable long-term stability.

scholarly journals Fabrication of Conjugated Porous Polymer Catalysts for Oxygen Reduction Reactions: A Bottom-Up Approach

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1224
Author(s):  
Sujoy Bandyopadhyay ◽  
Su Ryong Ha ◽  
M. Alam Khan ◽  
Cheongbeom Lee ◽  
Hong In Jeong ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Density Functional ◽  
Condensation Reaction ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Porous Polymer ◽  
Alkaline Media ◽  
Dimensional Structure ◽  
Electron Transfer Mechanism

The present study demonstrates the fabrication of a conjugated porous polymer (CPP-P2) through a Pd-catalyzed Suzuki–Miyaura poly-condensation reaction. 13C cross-polarization solid-state NMR and Fourier transform infrared (FTIR) spectroscopy were used to characterize CPP-P2. Pristine nitrogen-containing CPP was explored as a catalyst for the oxygen reduction reaction in 0.1 M KOH aqueous alkaline media. In the case of CPP-P2,the polymer oxygen reduction reaction occurs via a four-electron transfer mechanism. An understanding of the oxygen reduction at the molecular level and the role of molecular packing in the three-dimensional structure was proposed based on density functional theory (DFT) modeling.

Molybdenum-doped mesoporous carbon/graphene composites as efficient electrocatalysts for the oxygen reduction reaction

2015 ◽  
Vol 3 (39) ◽  
pp. 19969-19973 ◽  
Author(s):  
Youzhen Dong ◽  
Mengjia Liu ◽  
Yang Liu ◽  
Shiwei Wang ◽  
Jinghong Li
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Reduction Reaction ◽  
Soft Template ◽  
Methanol Tolerance ◽  
Excellent Activity

Molybdenum-doped mesoporous carbon/graphene composites synthesized by a novel and effective soft template strategy exhibit excellent activity for the ORR, better methanol tolerance and long-term durability.

In situ construction of a poly-3,4-ethylenedioxythiophene skeleton on carbon nanotubes to improve long-term stability for oxygen reduction reaction

2020 ◽  
Vol 44 (16) ◽  
pp. 6435-6442
Author(s):  
Jing Li ◽  
Jinfu Ma ◽  
Hui Lu ◽  
Zhilin Sheng ◽  
Shaolin Yang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Nanomaterials ◽  
High Surface ◽  
Reduction Reaction ◽  
Term Stability ◽  
Long Term Stability ◽  
Good Potential ◽  
Practical Performance

Although carbon nanomaterials show good potential as efficient electrocatalysts for oxygen reduction reaction (ORR), their inferior long-term stability due to their high surface energy resulting in compact restacking limits their practical performance.

Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction

2016 ◽  
Vol 9 (8) ◽  
pp. 2563-2570 ◽  
Author(s):  
Tianhua Zhou ◽  
Yonghua Du ◽  
Shengming Yin ◽  
Xuezeng Tian ◽  
Hongbin Yang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Electron Transfer Pathway ◽  
Nitrogen Doped ◽  
Long Term Stability ◽  
Electrocatalytic Oxygen Reduction

A nitrogen-doped Co3(PO4)2@nanocarbon hybrid was developed as an oxygen reduction reaction (ORR) catalyst and exhibits outstanding catalytic performance with high activity, long-term stability and a four-electron transfer pathway.

A facile nanocasting strategy to nitrogen-doped porous carbon monolith by treatment with ammonia for efficient oxygen reduction

2015 ◽  
Vol 3 (24) ◽  
pp. 12836-12844 ◽  
Author(s):  
Jiacheng Wang ◽  
Ruguang Ma ◽  
Yao Zhou ◽  
Qian Liu
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Methanol Tolerance ◽  
Nitrogen Doped ◽  
Carbon Monolith

A series of three-dimensional N-doped hierarchical macro- and meso-porous carbon monoliths (NCMs), which were prepared successfully using a facile nanocasting strategy in combination with pyrolysis in NH3, showed comparable catalytic activity but superior durability and methanol tolerance to Pt/C for the oxygen reduction reaction.

scholarly journals Metal Organic Framework Derived MnO2-Carbon Nanotubes for Efficient Oxygen Reduction Reaction and Arsenic Removal from Contaminated Water

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1895
Author(s):  
Vadahanambi Sridhar ◽  
Inwon Lee ◽  
Kwang Hyo Jung ◽  
Hyun Park
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Arsenic Removal ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Nano Particles ◽  
Alkaline Media ◽  
Metal Organic

Even though manganese oxides are attractive materials for batteries, super-capacitors and electro-catalysts for oxygen reduction reactions, in most practical applications MnO2 needs to be hybridized with conductive carbon nano-structures to overcome its inherent poor electrical conductivity. In this manuscript we report microwave-assisted synthesis of MnO2 embedded carbon nanotubes (MnO2@CNT) from Mn-H3BTC (benzene-1,3,5-carboxylic acid) metal organic frameworks (MOF) precursors. Using graphene oxide as microwave susceptible surface, MnO2 nano-particles embedded in three dimensional reduced graphene oxide (rGO) -CNT frameworks (MnO2@CNT-rGO) were synthesized which when applied as electro-catalysts in oxygen reduction reaction (ORR) demonstrated comparable half-wave potential to commercial Pt/C, better stability, and excellent immunity to methanol crossover effect in alkaline media. When carbon fiber (CF) was used as substrate, three-dimensional MnO2@CNT-CF were obtained whose utility as effective adsorbents for arsenic removal from contaminated waters is demonstrated.

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