TY - JOUR
T1 - High entropy alloy electrocatalysts
T2 - A critical assessment of fabrication and performance
AU - Tomboc, Gracita M.
AU - Kwon, Taehyun
AU - Joo, Jinwhan
AU - Lee, Kwangyeol
N1 - Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF-2020R1A2B5B03002475, NRF-2019M3E6A1064709 and NRF2019R1A6A1A11044070), Korea Basic Institute under the R&D program (Project No. C38530) supervised by the Ministry of Science, and Korea University Future Research Grant (KU-FRG).
Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2020/8/14
Y1 - 2020/8/14
N2 - High entropy alloy nanoparticles (HEA NPs) have gained considerable interest as electrocatalysts toward fuel cells and water electrolysis due to their remarkable durability and catalytic activity. The unique properties of HEA-based electrocatalysts may arise from the synergy of the mixed elements in a single-phase solid solution. Unfortunately, the details regarding the active catalytic sites and intrinsic activity of such catalysts are still very vague since the focused investigation on the properties of HEA NPs has only started recently. In this report, the progress of development of HEA NPs is critically reviewed to determine the extent of potential of HEA-based electrocatalysts. Herein, we present the proposed thermodynamic models that guide the design of HEA single-phase solid solution, followed by the discussion of different synthetic strategies to fabricate HEA NPs. Computational studies and machine-learning assisted tools are also presented to find the optimum catalyst composition and structure of HEA NPs, which is necessary to further improve the catalytic performance of HEA-based electrocatalysts and to gauge the relevance of structural factors such as strain effects, adsorption energies, and the interparticle distance to the catalytic performance. We conclude this report by drawing attention to future research directions on HEA NPs.
AB - High entropy alloy nanoparticles (HEA NPs) have gained considerable interest as electrocatalysts toward fuel cells and water electrolysis due to their remarkable durability and catalytic activity. The unique properties of HEA-based electrocatalysts may arise from the synergy of the mixed elements in a single-phase solid solution. Unfortunately, the details regarding the active catalytic sites and intrinsic activity of such catalysts are still very vague since the focused investigation on the properties of HEA NPs has only started recently. In this report, the progress of development of HEA NPs is critically reviewed to determine the extent of potential of HEA-based electrocatalysts. Herein, we present the proposed thermodynamic models that guide the design of HEA single-phase solid solution, followed by the discussion of different synthetic strategies to fabricate HEA NPs. Computational studies and machine-learning assisted tools are also presented to find the optimum catalyst composition and structure of HEA NPs, which is necessary to further improve the catalytic performance of HEA-based electrocatalysts and to gauge the relevance of structural factors such as strain effects, adsorption energies, and the interparticle distance to the catalytic performance. We conclude this report by drawing attention to future research directions on HEA NPs.
UR - http://www.scopus.com/inward/record.url?scp=85089309153&partnerID=8YFLogxK
U2 - 10.1039/d0ta05176d
DO - 10.1039/d0ta05176d
M3 - Article
AN - SCOPUS:85089309153
SN - 2050-7488
VL - 8
SP - 14844
EP - 14862
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 30
ER -