B, N Co-Doped ordered mesoporous carbon with enhanced electrocatalytic activity for the oxygen reduction reaction

Zeng, Kai; Su, Jianmin; Cao, Xuecheng; Zheng, Xiangjun; Li, Xiaowei; Tian, Jing‐Hua; Jin, Chao; Yang, Ruizhi

doi:10.1016/j.jallcom.2020.153908

Cited by 43 publications

(17 citation statements)

References 48 publications

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“… 119 In Zeng's report, the N–B co-doped OMC possessed the highest I D / I G value (1.31) compared to B-doped OMC (1.25), N-doped OMC (1.20), and original OMC (1.16). 29 The above-mentioned data suggested that more defects were generated from the synergistic contribution of various heteroatoms, which may provide more activate sites for electrochemical process.…”

Section: Electrical Properties Of Doped-omcmentioning

confidence: 98%

“… 29,92 The deteriorated channels in TEM images and weakened peaks in SAXS patterns all reflected the increase of the disordered degree. 29,117 Hence, the preservation of ordered mesoporous structure after heteroatoms doping should be paid much attention in the future study.…”

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

“…X-ray diffraction (XRD), small angle X-ray scattering (SAXS), and transmission electron microscopy (TEM) are useful tools to observe the ordered porous structure before and after doping. 29,92,117 The broader peaks at 24° and 43° in the XRD spectra, corresponding to (002) and (100) planes of the graphitic carbon, indicated the decrease of ordered degree. 29,92 The deteriorated channels in TEM images and weakened peaks in SAXS patterns all reflected the increase of the disordered degree.…”

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

“… 29,92,117 The broader peaks at 24° and 43° in the XRD spectra, corresponding to (002) and (100) planes of the graphitic carbon, indicated the decrease of ordered degree. 29,92 The deteriorated channels in TEM images and weakened peaks in SAXS patterns all reflected the increase of the disordered degree. 29,117 Hence, the preservation of ordered mesoporous structure after heteroatoms doping should be paid much attention in the future study.…”

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

“…Nitrogen is one of the most popular doped-elements for OMC. Generally, the doped-N exited in four forms, namely pyrrolic N, pyridinic N, graphitic/quaternary N, and oxidized N. 29,44 The electrochemical properties of N-doped OMC are highly affected by the types of doped-N species. The pyrrolic N and pyridinic N at the edge site of the carbon framework are negatively charged, which can transfer extra free electrons or delocalized electrons.…”

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

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Section: Electrical Properties Of Doped-omcmentioning

confidence: 98%

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

Section: Electrical Properties Of Doped-omcmentioning

confidence: 99%

Section: Electrical Properties Of Doped-omcmentioning

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Recent Advances in Non‐Noble Bifunctional Oxygen Electrocatalysts toward Large‐Scale Production

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The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are crucial reactions in energy conversion and storage systems including fuel cells, metal–air batteries, and electrolyzers. Developing low‐cost, high‐efficiency, and durable non‐noble bifunctional oxygen electrocatalysts is the key to the commercialization of these devices. Here, based on an in‐depth understanding of ORR/OER reaction mechanisms, recent advances in the development of non‐noble electrocatalysts for ORR/OER are reviewed. In particular, rational design for enhancing the activity and stability and scalable synthesis toward the large‐scale production of bifunctional electrocatalysts are highlighted. Prospects and future challenges in the field of oxygen electrocatalysis are presented.

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Milestones of Electrocatalyst Development for Direct Alcohol Fuel Cells

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With increasing energy demands and environmental issues, renewable energy‐related conversion systems have gained significant attention as a potential substitute for traditional fossil fuel‐based energy technologies. First introduced by S.W.Grove in 1838, fuel cells have been extensively developed into many different types, and direct alcohol fuel cells (DAFCs) are of interest as a potential power source because of their large power density, quick start, simplicity, and nearly zero emission. However, the high cost and poor catalytic efficiency of current catalysts are primary barriers to commercializing DAFCs. Designing advanced nanocatalysts for both anode and cathode electrodes is of crucial importance for practical DAFC development; however, a brief evaluation of current progress in electrocatalyst development for the alcohol oxidation reaction (AOR) and oxygen reduction reaction (ORR) is still very little. Herein, recent advances in fuel cell catalysts, mainly focusing on several most active areas (i.e., Pt‐ and Pt‐free‐based catalysts, metal‐free carbon, carbon‐based nonprecious metal composites) are concisely summarized. Also, challenges and prospects for DAFCs are highlighted to supply a comprehensive view for further designing high‐performance DAFC catalysts.

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B, N Co-Doped ordered mesoporous carbon with enhanced electrocatalytic activity for the oxygen reduction reaction

Cited by 43 publications

References 48 publications

Doping strategy, properties and application of heteroatom-doped ordered mesoporous carbon

Doping strategy, properties and application of heteroatom-doped ordered mesoporous carbon

Recent Advances in Non‐Noble Bifunctional Oxygen Electrocatalysts toward Large‐Scale Production

Milestones of Electrocatalyst Development for Direct Alcohol Fuel Cells

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