Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Ede, Sivasankara Rao; Luo, Zhiping

doi:10.1039/d1ta04032d

Cited by 140 publications

(101 citation statements)

References 255 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies on OER can be consulted to derive important clues for the synergy. [ 11–14 ] Since OER is a multielectron transfer process, multiple charges should be accumulated to drive the chemical bond formation. [ 15 ] Shao‐Horn's group reveals that the OER activity scales with the charge storage capacity of the electrocatalysts, and thus they suggest that the accumulated charge corresponds to the generation of surface reaction sites.…”

Section: Introductionmentioning

confidence: 99%

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Dai

Wang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Combining noble metals with nonnoble metals is an attractive strategy to balance the activity and cost of electrocatalysts. However, a guiding principle for selecting suitable nonnoble metals is still lacking. Herein, a thorough mechanistic study on the platform oxygen evolution reaction (OER) electrocatalyst of Ir@Co3O4 to deeply understand the synergy between Ir and Co3O4 for the boosted OER has been carried out. It is demonstrated that the pseudocapacitive feature of Co3O4 plays a key role in accumulating sufficient positive charge [Q], while the Ir sites are responsible for achieving a high reaction order (β), synergistically contributing to the high OER activity of Ir@Co3O4 through the rate law equation. Specifically, Ir@Co3O4 displays a low overpotential of 280 mV at 10 mA cm−2 with a small Ir loading of 1.4 wt%. Ir@Co3O4 is further applied to Zn‐air batteries, which enables a low charging potential and thus alleviates the oxidative corrosion of the air electrode, leading to improved cycle stability of 210 h at 20 mA cm−2. This work demonstrates that anchoring active noble metal sites (for high β) on pseudocapacitive supports (for high [Q]) is highly favorable to the OER process, providing a clear guidance for boosting the utilization of noble metals in electrocatalysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Dai

Wang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Cation doping can not only regulate the electronic structure, but also decrease the binding energy of OER intermediates, such as *O, *OH, and *O‐OH. [ 11 ]…”

Section: Introductionmentioning

confidence: 99%

“…Cation doping can not only regulate the electronic structure, but also decrease the binding energy of OER intermediates, such as *O, *OH, and *O-OH. [11] Furthermore, the doped heteroatoms can act as electrocatalytic active sites and synergistically promote the catalytic performance by adjusting the electronic structure and/or the surface electronic structure of the host material. [12] The dosage of doping is mainly in trace or small amounts.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Ru/Rh Cation Doping and Oxygen‐Vacancy Engineering of FeOOH Nanoarrays@Ti₃C₂T_x MXene Heterojunction for Highly Efficient and Stable Electrocatalytic Oxygen Evolution

Zhang

Shan

Wang

et al. 2022

Small

View full text Add to dashboard Cite

Oxyhydroxides hold promise as highly-efficient non-noble electrocatalysts for the oxygen evolution reaction (OER), but their poor conductivity and structural instability greatly impede their progress. Herein, the authors develop a cation-doping and oxygenvacancy engineering strategy to fabricate Ru/Rh-doped FeOOH nanoarrays with abundant oxygen-vacancies in situ grown on Ti 3 C 2 T x MXene (Ru/Rh-FeOOH@Ti 3 C 2 T x ) as highly-efficient OER electrocatalysts. Benefiting from Ru/Rh-cation regulation, oxygenvacancy engineering, and heterojunction synergy between MXene and modulated FeOOH, the optimized Rh/Ru-FeOOH@Ti 3 C 2 T x electrocatalysts exhibit excellent OER activities and remarkable stabilities with 100 h. Particularly, 3%Rh-FeOOH@Ti 3 C 2 T x electrocatalyst only needs a 223 mV overpotential at 10 mA cm -2 and 306 mV to reach 100 mA cm -2 , which is superior to commercial IrO 2 catalyst and most reported oxyhydroxide-based electrocatalysts. Further, systematically theoretical caculation, kinetics, thermodynamics, and microstructural analysis verify that the integration of Ru/Rh-cation doping and oxygen vacancy obviously enhances the intrinsic conductivity and lattice defects of FeOOH and expose more active sites, thereby decreasing the adsorption/desorption energy barrier and activation energy, and improving the specific activity and catalytic kinetics of electrocatalysts, whereas in situ hybridization with MXene strengthens the structural stability. This work clearly confirms that cationdoping and oxygen-vacancy engineering offers a joint strategy for the electronic structure modulation and design of highlyefficient inexpensive OER electrocatalysts.Research data are not shared.

show abstract

“…

…”

mentioning

confidence: 99%

Observation of Electrospun Yttrium Cobalt Oxide YCoO3 Nanofibers Calcined at Different Temperatures

Adhikari

Morris

Watson

et al. 2022

Microscopy and Microanalysis

Self Cite

View full text Add to dashboard Cite

Perovskite oxides, with general formula ABO 3 , have attracted great attention in recent years, due to their simplified structure and customizable composition to achieve tunable properties [1][2][3][4]. Among the various types of perovskites, yttrium cobaltate (YCoO 3 ) has been synthesized by a traditional sol-gel method [5-9], or a solution combustion synthesis method [10]. This material was used to study gas sensing [6,8], fuel cells [9] and catalyst [10] applications. In this work, we report a synthesis of YCoO 3 by electrospinning followed with calcination at different temperatures.

show abstract

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Abstract: Electrochemical water splitting produces clean hydrogen fuel as one of the pivotal alternative energies for fossil fuels in the near future. However, anodic oxygen evolution reaction (OER) is a significant...

Cited by 140 publications

References 255 publications

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Ru/Rh Cation Doping and Oxygen‐Vacancy Engineering of FeOOH Nanoarrays@Ti₃C₂T_x MXene Heterojunction for Highly Efficient and Stable Electrocatalytic Oxygen Evolution

Observation of Electrospun Yttrium Cobalt Oxide YCoO3 Nanofibers Calcined at Different Temperatures

Contact Info

Product

Resources

About

Tuning the intrinsic catalytic activities of oxygen-evolution catalysts by doping: a comprehensive review

Abstract: Electrochemical water splitting produces clean hydrogen fuel as one of the pivotal alternative energies for fossil fuels in the near future. However, anodic oxygen evolution reaction (OER) is a significant...

Cited by 140 publications

References 255 publications

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Bridging the Charge Accumulation and High Reaction Order for High‐Rate Oxygen Evolution and Long Stable Zn‐Air Batteries

Ru/Rh Cation Doping and Oxygen‐Vacancy Engineering of FeOOH Nanoarrays@Ti3C2Tx MXene Heterojunction for Highly Efficient and Stable Electrocatalytic Oxygen Evolution

Observation of Electrospun Yttrium Cobalt Oxide YCoO3 Nanofibers Calcined at Different Temperatures

Contact Info

Product

Resources

About

Ru/Rh Cation Doping and Oxygen‐Vacancy Engineering of FeOOH Nanoarrays@Ti₃C₂T_x MXene Heterojunction for Highly Efficient and Stable Electrocatalytic Oxygen Evolution