TY - JOUR
T1 - Highly Efficient Perovskite-Based Electrocatalysts for Water Oxidation in Acidic Environments
T2 - A Mini Review
AU - Song, Hee Jo
AU - Yoon, Hyunseok
AU - Ju, Bobae
AU - Kim, Dong Wan
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT, South Korea (Grant No. 2016M3A7B4909318). This research was supported by Basic Science Research Program through the NRF funded by the Ministry of Education (Program No. 2020R1A6A1A03045059).
Publisher Copyright:
© 2020 Wiley-VCH GmbH.
PY - 2021/7/22
Y1 - 2021/7/22
N2 - Proton-conducting polymer electrolyte membrane water electrolysis (PEMWE) is a promising technology for generating clean and sustainable hydrogen fuels from water. However, PEMWE requires the use of expensive electrocatalysts; the currently available electrocatalysts for the oxygen evolution reaction (OER) depend on noble metals (Ir, Ru). Since noble metals are expensive, commercialization of PEMWE remains elusive. In addition, PEMWE suffers from the very slow kinetics of the OER in acidic media. Thus, the development of noble-metal-reduced, highly active, and acid-compatible oxygen evolution electrocatalysts is needed for the commercialization of PEMWE to be viable. In this regard, perovskite oxides have great potential for application as OER electrocatalysts in acidic media, because their multimetal-oxide forms can reduce the use of noble metals, and their high structural and compositional flexibility can modulate the electronic structure and OER activity. In this review, current knowledge regarding state-of-the-art perovskite oxides for acidic water oxidation electrocatalysts is summarized. First, the fundamental OER mechanism of electrocatalysts in acidic media is introduced briefly. Second, Ir- and Ru-based perovskite oxides in acidic solutions are provided, focusing on their stability and OER activity. Finally, some challenges facing the development of perovskite oxide-based electrocatalysts, and a perspective on their future are discussed.
AB - Proton-conducting polymer electrolyte membrane water electrolysis (PEMWE) is a promising technology for generating clean and sustainable hydrogen fuels from water. However, PEMWE requires the use of expensive electrocatalysts; the currently available electrocatalysts for the oxygen evolution reaction (OER) depend on noble metals (Ir, Ru). Since noble metals are expensive, commercialization of PEMWE remains elusive. In addition, PEMWE suffers from the very slow kinetics of the OER in acidic media. Thus, the development of noble-metal-reduced, highly active, and acid-compatible oxygen evolution electrocatalysts is needed for the commercialization of PEMWE to be viable. In this regard, perovskite oxides have great potential for application as OER electrocatalysts in acidic media, because their multimetal-oxide forms can reduce the use of noble metals, and their high structural and compositional flexibility can modulate the electronic structure and OER activity. In this review, current knowledge regarding state-of-the-art perovskite oxides for acidic water oxidation electrocatalysts is summarized. First, the fundamental OER mechanism of electrocatalysts in acidic media is introduced briefly. Second, Ir- and Ru-based perovskite oxides in acidic solutions are provided, focusing on their stability and OER activity. Finally, some challenges facing the development of perovskite oxide-based electrocatalysts, and a perspective on their future are discussed.
KW - PEMWEs
KW - noble metal reduction
KW - oxygen evolution reactions
KW - perovskites
KW - surface reconstruction
UR - http://www.scopus.com/inward/record.url?scp=85096763430&partnerID=8YFLogxK
U2 - 10.1002/aenm.202002428
DO - 10.1002/aenm.202002428
M3 - Review article
AN - SCOPUS:85096763430
SN - 1614-6832
VL - 11
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 27
M1 - 2002428
ER -
