Cited by 590Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsCatalytic Processes in Materials Science

Heteroatom-doped graphitic carbon catalysts for efficient electrocatalysis of oxygen reduction reaction

Zhang, Jintao, Dai, Liming·2015·ACS Catalysis

Abstract

The oxygen reduction reaction (ORR) plays an important role in renewable energy technologies, such as fuel cells and metal–air batteries. Along with the extensive research and development of nonprecious metal catalysts (NPMCs) to reduce/replace Pt for electrocatalytic reduction of oxygen, a new class of heteroatom-doped metal-free carbon catalysts has been recently developed, which, as alternative ORR catalysts, could dramatically reduce the cost and increase the efficiency of fuel cells and metal–air batteries. The improved catalytic performance of heteroatom-doped carbon ORR catalysts has been attributed to the doping-induced charge redistribution around the heteroatom dopants, which lowered the ORR potential and changed the O 2 chemisorption mode to effectively weaken the O–O bonding, facilitating ORR at the heteroatom-doped carbon electrodes. Subsequently, this new metal-free ORR mechanism was confirmed by numerous studies, and the same principle has been applied to the development of various other efficient catalysts for not only ORR in fuel cells but also oxygen evolution reaction (OER) in metal–air batteries and hydrogen evolution reaction (HER) in water-splitting systems. However, there are still some concerns about possible contributions of metal impurities to the ORR activities of these carbon catalysts. To avoid unnecessary confusion, therefore, it is important to clarify the situation. In this Perspective, we provide important aspects of the metal-free ORR catalysts with a critical analysis of the literature, along with perspectives and challenges of this rapidly growing field of practical significance.

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Crossref · 10.1021/acscatal.5b01563

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Authors
Zhang, J., & Dai, L.
Affiliations
Case Western Reserve University (US)
Corresponding author
Dai, Liming
Venue
ACS Catalysis
Published
2015-11-10
Volume
5
Issue
12
Pages
7244-7253
ISSN
2155-5435 (ISSN-L)
OpenAlex
W2203309456
Cited by
590
References
129
Citations by year
2026: 34 · 2025: 24 · 2024: 31 · 2023: 38 · 2022: 54 · 2021: 77 · 2020: 70 · 2019: 74 · 2018: 70 · 2017: 62 · 2016: 52 · 2015: 4
FWCI
18.51
Type
journal article
Language
en
Open access
closed
Locations
ACS Catalysis (publishedVersion)
Funders
  • Division of Materials Research (DMR 1106160)
  • Division of Industrial Innovation and Partnerships (AIR-IIP-1343270)
  • Air Force Office of Scientific Research (FA9550-12-1-0037)
  • Division of Civil, Mechanical and Manufacturing Innovation (CMMI-1266295, CMMI-1400274)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
Keywords
oxygen reduction reaction, heteroatom-doped carbon, metal-free electrocatalysts, non-noble metal catalysts, charge redistribution, oxygen chemisorption, oxygen evolution reaction, hydrogen evolution reaction, fuel cells, metal-air batteries, water splitting

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