High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

To, John W. F.; Ng, Jia Wei Desmond; Siahrostami, Samira; Koh, Ai Leen; Lee, Yangjin; Chen, Zhihua; Fong, Kara D.; Chen, Shu‐Cheng; He, Jiajun; Bae, Won‐Gyu; Wilcox, Jennifer; Jeong, Hu Young; Kim, Kwanpyo; Studt, Felix; Nørskov, Jens K.; Jaramillo, Thomas F.; Bao, Zhenan

doi:10.1007/s12274-016-1347-8

Cited by 65 publications

(72 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to the role of micropores, the surface defects act as additional active sites for ORR to increase activity. Previous studies examining the role of defect sites have observed an increased activity in both the two‐electron and four‐electron pathways, where the defect sites most active toward the four‐electron pathway were identified to be the pentagon and zigzag sites near edges . While enhanced ORR activity has been clearly demonstrated in the current literature, there lacks conclusive evidence toward specific defect sites for a tailored two‐electron reduction to H 2 O 2 .…”

Section: H2o2 Production Over Nonmetal‐based Electrocatalystsmentioning

confidence: 65%

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts

Zhang

Cheng

et al. 2019

Small

126

View full text Add to dashboard Cite

The production of H2O2 via the electrochemical oxygen reduction reaction (ORR) presents an attractive decentralized alternative to the current industry‐dominant anthraquinone process. However, in order to achieve viable commercialization of this process, a state‐of‐the‐art electrocatalyst exhibiting high activity, selectivity, and long‐term stability is imperative for industrial applications. Herein, an in‐depth discussion on the current frontiers in electrocatalyst design is provided, emphasizing the influences of electronic and geometric effects, surface structure, and the effects of heteroatom functionalization on the catalytic performance of commonly studied materials (metals, alloys, carbons). The limitations on the performance of the current catalyst materials are also discussed, together with alternative strategies to overcome the impediments. Finally, directions of future research efforts for the discovery of next‐generation ORR electrocatalysts are highlighted.

show abstract

Section: H2o2 Production Over Nonmetal‐based Electrocatalystsmentioning

confidence: 65%

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts

Zhang

Cheng

et al. 2019

Small

126

View full text Add to dashboard Cite

show abstract

“…[64][65][66][67][68][69][70] Rational design of carbon materials with multicomponent active centers can in principle lead to multifunctional catalysts for the ORR/OER. Typically, metal-free heteroatom (e.g., N)-doped carbon (C-N) and N-and transition metal-"co-doped" carbon (M-N-C, M = Fe or/and Co) are widely investigated.…”

Section: Carbon Materialsmentioning

confidence: 99%

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

Huang

Wang

Peng

et al. 2017

Advanced Energy Materials

638

443

View full text Add to dashboard Cite

Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the two most important reactions in rechargeable metal‐air battery, a promising technology to meet the energy requirements for various applications. The development of low‐cost, highly efficient and stable bifunctional ORR/OER catalysts is critical for a large‐scale application of this technology. In this review, the authors first introduce the fundamentals of bifunctional ORR/OER electrocatalysis in alkaline electrolyte. Various types of nanostructured materials as bifunctional ORR/OER catalysts including metal oxide, hydroxide and sulfide, functional carbon material, metal, and their composites are then reviewed. The crucial factors that can be used to tune the activity of the catalyst towards ORR/OER are summarized, including (1) phase, morphology, crystal facet, defect, mixed‐metal and strain engineering for metal oxide; (2) heteroatom doping, topological defects, and formation of metal‐N‐C structure for carbon material; (3) alloy effect for metal. These experiences lay the foundation for large scale application of metal‐air battery and can also effectively guide the rational design of catalysts for other electrocatalytic reactions.

show abstract

“…Various efficient bifunctional oxygen electrocatalysts with nitrogen‐doped carbon as active materials were reported afterward, and the mechanism of nitrogen heteroatoms improving the catalytic activity of carbon nanomaterials was also strongly considered . In N‐doped carbon‐based oxygen electrocatalysts, the electronic structure of the adjacent carbon atoms is modulated by the nitrogen atoms, and the regulated carbon atoms are believed to be the active sites .…”

Section: Efficient Active Materials For Bifunctional Oxygen Electrocamentioning

confidence: 99%

“…Recently, a N‐doped hierarchical carbon material (NHC) containing both the heteroatoms and defects is proposed as a bifunctional ORR/OER electrocatalyst . The NHC catalyst was synthesized through a soft‐templating method, then activated by high‐temperature calcination in NH 3 flow.…”

Section: Efficient Active Materials For Bifunctional Oxygen Electrocamentioning

confidence: 99%

See 1 more Smart Citation

A Review of Precious‐Metal‐Free Bifunctional Oxygen Electrocatalysts: Rational Design and Applications in Zn−Air Batteries

Wang

Tang

Zhang

2018

Adv Funct Materials

545

326

View full text Add to dashboard Cite

The bifunctional electrocatalysis of oxygen reduction reactions (ORRs) and oxygen evolution reactions (OERs) is critical for the development of rechargeable Zn-air batteries. Both ORRs and OERs suffer from sluggish kinetics and high overpotentials, and the bifunctional reactivity is limited by the scaling relationship. Therefore, smart designs on electrocatalysts are requested to achieve high bifunctional ORR/OER activity and excellent performance in Zn-air batteries. Herein, the requirements for bifunctional oxygen electrocatalysts are first introduced. Then the recent advances of precious-metal-free active materials and regulation methods of their intrinsic activity are introduced. The structural design principles to improve the accessibility of the active sites are further presented. Finally, a brief overview of the applications of bifunctional oxygen electrocatalysts in Zn-air batteries, including routine liquid batteries and flexible solid-state batteries, is presented. This review affords rational design principles and strategies for nonprecious bifunctional ORR/OER electrocatalysts, which are expected to guide the targeted optimization of electrocatalysts and further exploration of emerging candidates.The electrochemical tests of ORR and ORR are usually performed in a three-electrode system. O 2 -saturated 0.10 or 1.0 m KOH Adv. Funct. Mater. 2018, 28, 1803329 Figure 2. Schematic illustration of how the scaling relationship affect the ORR and OER volcano plots. All panels reproduced with permission. [35]

show abstract

High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

Cited by 65 publications

References 64 publications

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

A Review of Precious‐Metal‐Free Bifunctional Oxygen Electrocatalysts: Rational Design and Applications in Zn−Air Batteries

Contact Info

Product

Resources

About

High-performance oxygen reduction and evolution carbon catalysis: From mechanistic studies to device integration

Cited by 65 publications

References 64 publications

Tailoring the Electrochemical Production of H2O2: Strategies for the Rational Design of High‐Performance Electrocatalysts

Tailoring the Electrochemical Production of H2O2: Strategies for the Rational Design of High‐Performance Electrocatalysts

Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives

A Review of Precious‐Metal‐Free Bifunctional Oxygen Electrocatalysts: Rational Design and Applications in Zn−Air Batteries

Contact Info

Product

Resources

About

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts

Tailoring the Electrochemical Production of H₂O₂: Strategies for the Rational Design of High‐Performance Electrocatalysts