scholarly journals Fluorine-doped graphene with an outstanding electrocatalytic performance for efficient oxygen reduction reaction in alkaline solution

2018 ◽  
Vol 5 (10) ◽  
pp. 180925 ◽  
Author(s):  
Jiahao Guo ◽  
Jianguo Zhang ◽  
Hanqing Zhao ◽  
Yongshuang Fang ◽  
Kun Ming ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Materials ◽  
Pyrolysis Temperature ◽  
Low Cost ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Onset Potential ◽  
Doped Graphene ◽  
Cost Efficient

Doping carbon materials have proved to be the front runners to substitute for Pt as oxygen reduction reaction (ORR) catalysts. Fluorine-doped graphene (FG) has rarely been used as ORR catalyst because of the difficulty in preparation. Herein, we report FG sheets prepared by a thermal pyrolysis graphene oxide (GO) process in the presence of zinc fluoride (ZnF 2 ) as an efficient electrocatalyst for ORR in the alkaline medium. The results show that the pyrolysis temperature seriously affected the doped fluoride amount and morphology of catalyst. It is found that the FG-1100 catalyst possesses a more positive onset potential, higher current density and better four-electron process for ORR than other FG samples. FG-1100 displays an outstanding ORR catalytic activity that is comparable to that of the commercial Pt/C catalyst. Also, its durability and methanol tolerance ability are superior to those of the commercial Pt/C. The excellent ORR catalytic performance is closely related to its higher doped fluorine amount and wrinkle morphology. The FG catalyst can be developed as a low-cost, efficient and durable catalyst as a viable replacement for the Pt/C catalyst, promoting the commercialization of fuel cells.

scholarly journals Highly efficient electrocatalysts with CoO/CoFe2O4 composites embedded within N-doped porous carbon materials prepared by hard-template method for oxygen reduction reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56375-56381 ◽  
Author(s):  
Xinxin Jin ◽  
Yu Jiang ◽  
Qi Hu ◽  
Shaohua Zhang ◽  
Qike Jiang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Solution ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Low Cost ◽  
Reduction Reaction ◽  
Template Method ◽  
Hard Template ◽  
Hard Template Method

Low-cost dual transition metal (Fe and Co) based non-noble metal electrocatalysts (NNMEs) with large surface area and porous structure boost oxygen reduction reaction (ORR) performance in alkaline solution.

Tunable ternary (P, S, N)-doped graphene as an efficient electrocatalyst for oxygen reduction reaction in an alkaline medium

RSC Advances ◽  
2015 ◽  
Vol 5 (105) ◽  
pp. 86746-86753 ◽  
Author(s):  
Yishu Wang ◽  
Bowen Zhang ◽  
Minghui Xu ◽  
Xingquan He
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Efficient Catalyst ◽  
Pyrolysis Method ◽  
High Efficient ◽  
Doped Graphene ◽  
One Step ◽  
Nitrogen Phosphorus

A novel nitrogen, phosphorus and sulfur ternary-doped graphene (PSNG) was synthesized by a one-step pyrolysis method, which was used as a low-cost and high-efficient catalyst for the oxygen reduction reaction.

A cobalt–nitrogen complex on N-doped three-dimensional graphene framework as a highly efficient electrocatalyst for oxygen reduction reaction

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 15066-15072 ◽  
Author(s):  
Yuanyuan Jiang ◽  
Yizhong Lu ◽  
Xiaodan Wang ◽  
Yu Bao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Precious Metal ◽  
High Performance ◽  
Raw Materials ◽  
Low Cost ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Highly Efficient ◽  
Doped Graphene

Effective preparation of a high-performance non-precious metal oxygen reduction electrocatalyst (a Co–N complex on 3D N-doped graphene) by a facile method from low-cost raw materials.

scholarly journals Nanostructured carbons containing FeNi/NiFe2O4 supported over N-doped carbon nanofibers for oxygen reduction and evolution reactions

RSC Advances ◽  
2019 ◽  
Vol 9 (63) ◽  
pp. 36586-36599 ◽  
Author(s):  
Iram Aziz ◽  
JinGoo Lee ◽  
Hatice Duran ◽  
Katrin Kirchhoff ◽  
Richard T. Baker ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Carbon Nanofibers ◽  
Oxygen Evolution Reaction ◽  
Precious Metal ◽  
Carbon Materials ◽  
Low Cost ◽  
Reduction Reaction ◽  
High Durability

Non-precious metal-based electrocatalysts on carbon materials with high durability and low cost have been developed to ameliorate the oxygen-reduction reaction (ORR) and oxygen-evolution reaction (OER).

Si–C–F decorated porous carbon materials: A new class of electrocatalysts for the oxygen reduction reaction

2016 ◽  
Vol 4 (20) ◽  
pp. 7924-7929 ◽  
Author(s):  
Syed Comail Abbas ◽  
Kui Ding ◽  
Qin Liu ◽  
Yiyin Huang ◽  
Yakun Bu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Low Cost ◽  
Energy Systems ◽  
Reduction Reaction ◽  
Porous Carbon Materials ◽  
New Class ◽  
Earth Abundant

The development of efficient oxygen reduction reaction (ORR) electrocatalysts composed of low cost and earth abundant elements is imperative for several energy systems.

scholarly journals Fe2O3 Embedded Nitrogen-doped Biomass Carbon as Electrocatalyst for the Oxygen Reduction Reaction

2021 ◽  
Vol 2079 (1) ◽  
pp. 012002
Author(s):  
Yanling Wu ◽  
Huiji Jiao ◽  
Mingqian Hou ◽  
Peng Zhang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Energy Conversion ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Materials ◽  
Low Cost ◽  
Reduction Reaction ◽  
Biomass Carbon ◽  
Pyrolysis Process ◽  
Nitrogen Doped

Abstract Catalyst for ORR is important in the field of energy conversion. Previous research has shown that nanoparticle-embedded into N-doped carbon materials are a good ORR candidates. Here, Fe2O3/N-doped biomass carbon (named Fe2O3/N-bio-C) ORR catalyst via a pyrolysis process of mixture from the Heme precursor and biomass material (named poplar flowers). The as-synthesized electrocatalyst of Fe2O3/N-bio-C exhibits good electroactivity due to the formation of Fe2O3 nanoparticle active sites and abundant N-containing groups. The work points the way to synthesize the low-cost Fe-based N-doped biomass carbon ORR catalysts.

scholarly journals Cyanogel-Derived Synthesis of Porous PdFe Nanohydrangeas as Electrocatalysts for Oxygen Reduction Reaction

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3382
Author(s):  
Jinxin Wan ◽  
Zhenyuan Liu ◽  
Xiaoyu Yang ◽  
Peng Cheng ◽  
Chao Yan
Keyword(s):  
Synergistic Effect ◽  
Electrochemical Performance ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Synergetic Effect ◽  
Reduction Reaction ◽  
Onset Potential ◽  
Earth Abundant ◽  
Porous Nanostructure ◽  
Cost Efficient

It is important to develop cost-efficient electrocatalysts used in the oxygen reduction reaction (ORR) for widespread applications in fuel cells. Palladium (Pd) is a promising catalyst, due to its more abundant reserves and lower price than platinum (Pt), and doping an earth-abundant 3d-transition metal M into Pd to form Pd–M bimetallic alloys may not only further reduce the use of expensive Pd but also promote the electrocatalytic performance of ORR, owing to the synergistic effect between Pd and M. Here we report a cyanogel-derived synthesis of PdFe alloys with porous nanostructure via a simple coinstantaneous reduction reaction by using K2PdIICl4/K4FeII(CN)6 cyanogel as precursor. The synthesized PdFe alloys possess hydrangea-like morphology and porous nanostructure, which are beneficial to the electrochemical performance in ORR. The onset potential of the porous PdFe nanohydrangeas is determined to be 0.988 V, which is much more positive than that of commercial Pt/C catalyst (0.976 V) and Pd black catalyst (0.964 V). Resulting from the unique structural advantages and synergetic effect between bimetals, the synthesized PdFe nanohydrangeas with porous structure have outstanding electrocatalytic activity and stability for ORR, compared with the commercial Pd black and Pt/C.

DFT-based study on the mechanisms of the oxygen reduction reaction on Co(acetylacetonate)2supported by N-doped graphene nanoribbon

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79662-79667 ◽  
Author(s):  
Nan Wang ◽  
Yuejie Liu ◽  
Jingxiang Zhao ◽  
Qinghai Cai
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Graphene Nanoribbon ◽  
Doped Graphene

The hybridization of Co(acac)2with N-doped graphene can give rise to outstanding catalytic performance for ORR in fuel cells.

scholarly journals Heteroatom-doped hollow carbon material as an electrocatalyst for oxygen reduction reaction

2021 ◽  
Vol 2079 (1) ◽  
pp. 012007
Author(s):  
Tiantian Sun ◽  
Heng-guo Wang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Materials ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Carbon Nanospheres ◽  
Diffusion Limited ◽  
Half Wave ◽  
Phosphorus Containing ◽  
Hollow Carbon

Abstract The development of highly efficient and stable non-precious metal electrocatalysts is essential for the oxygen reduction reaction (ORR). In this study, a simple polymerization pyrolysis method is proposed to prepare heteroatom-doped hollow carbon nanospheres (NPSC-800) by using Fe-BDC and phosphorus-containing polymers as precursors. The unique structure allows the catalyst to show good catalytic performance (Initial potential of 0.8786 V, a half-wave potential of 0.7576 V, and a diffusion-limited current density of 4.48 mA cm-2). This research provides an effective strategy for the synthesis of heteroatom-doped carbon materials with good ORR catalytic performance.

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