TY - JOUR
T1 - High-Entropy Intermetallic PtRhBiSnSb Nanoplates for Highly Efficient Alcohol Oxidation Electrocatalysis
AU - Chen, Wen
AU - Luo, Shuiping
AU - Sun, Mingzi
AU - Wu, Xiaoyu
AU - Zhou, Yongsheng
AU - Liao, Yujia
AU - Tang, Min
AU - Fan, Xiaokun
AU - Huang, Bolong
AU - Quan, Zewei
N1 - Funding Information:
W.C., S.L., and M.S. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (NSFC) (Grants 52072166, 52101259, and 21771156), the Guangdong Science and Technology Department (Grants 2016ZT06C279 and 2022A1515010918), the Shenzhen Science and Technology Innovation Committee (Grants JCYJ20210324105008022, KQTD2016053019134356, and RCJC2021060910444106), the NSFC/RGC Joint Research Scheme Project (N_PolyU502/21), and the funding for Projects of Strategic Importance of The Hong Kong Polytechnic University (Project Code: 1‐ZE2V). The authors acknowledge the assistance of Dr. Wu Wang for his help in analyzing the HRTEM results, and of SUSTech Core Research Facilities.
Funding Information:
W.C., S.L., and M.S. contributed equally to this work. This work was supported by the National Natural Science Foundation of China (NSFC) (Grants 52072166, 52101259, and 21771156), the Guangdong Science and Technology Department (Grants 2016ZT06C279 and 2022A1515010918), the Shenzhen Science and Technology Innovation Committee (Grants JCYJ20210324105008022, KQTD2016053019134356, and RCJC2021060910444106), the NSFC/RGC Joint Research Scheme Project (N_PolyU502/21), and the funding for Projects of Strategic Importance of The Hong Kong Polytechnic University (Project Code: 1-ZE2V). The authors acknowledge the assistance of Dr. Wu Wang for his help in analyzing the HRTEM results, and of SUSTech Core Research Facilities.
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/10/26
Y1 - 2022/10/26
N2 - The control of multimetallic ensembles at the atomic-level is challenging, especially for high-entropy alloys (HEAs) possessing five or more elements. Herein, the one-pot synthesis of hexagonal-close-packed (hcp) PtRhBiSnSb high-entropy intermetallic (HEI) nanoplates with intrinsically isolated Pt, Rh, Bi, Sn, and Sb atoms is reported, to boost the electrochemical oxidation of liquid fuels. Taking advantage of these combined five metals, the well-defined PtRhBiSnSb HEI nanoplates exhibit a remarkable mass activity of 19.529, 15.558, and 7.535 A mg−1Pt+Rh toward the electrooxidation of methanol, ethanol, and glycerol in alkaline electrolytes, respectively, representing a state-of-the-art multifunctional electrocatalyst for alcohol oxidation reactions. In particular, the PtRhBiSnSb HEI achieves record-high methanol oxidation reaction (MOR) activity in an alkaline environment. Theoretical calculations demonstrate that the introduction of the fifth metal Rh enhances the electron-transfer efficiency in PtRhBiSnSb HEI nanoplates, which contributes to the improved oxidation capability. Meanwhile, robust electronic structures of the active sites are achieved due to the synergistic protections from Bi, Sn, and Sb sites. This work offers significant research advances in developing well-defined HEA with delicate control over compositions and properties.
AB - The control of multimetallic ensembles at the atomic-level is challenging, especially for high-entropy alloys (HEAs) possessing five or more elements. Herein, the one-pot synthesis of hexagonal-close-packed (hcp) PtRhBiSnSb high-entropy intermetallic (HEI) nanoplates with intrinsically isolated Pt, Rh, Bi, Sn, and Sb atoms is reported, to boost the electrochemical oxidation of liquid fuels. Taking advantage of these combined five metals, the well-defined PtRhBiSnSb HEI nanoplates exhibit a remarkable mass activity of 19.529, 15.558, and 7.535 A mg−1Pt+Rh toward the electrooxidation of methanol, ethanol, and glycerol in alkaline electrolytes, respectively, representing a state-of-the-art multifunctional electrocatalyst for alcohol oxidation reactions. In particular, the PtRhBiSnSb HEI achieves record-high methanol oxidation reaction (MOR) activity in an alkaline environment. Theoretical calculations demonstrate that the introduction of the fifth metal Rh enhances the electron-transfer efficiency in PtRhBiSnSb HEI nanoplates, which contributes to the improved oxidation capability. Meanwhile, robust electronic structures of the active sites are achieved due to the synergistic protections from Bi, Sn, and Sb sites. This work offers significant research advances in developing well-defined HEA with delicate control over compositions and properties.
KW - alcohol oxidation
KW - electrocatalysis
KW - high-entropy intermetallics
KW - nanoplates
UR - http://www.scopus.com/inward/record.url?scp=85138750450&partnerID=8YFLogxK
U2 - 10.1002/adma.202206276
DO - 10.1002/adma.202206276
M3 - Journal article
C2 - 36063819
AN - SCOPUS:85138750450
SN - 0935-9648
VL - 34
JO - Advanced Materials
JF - Advanced Materials
IS - 43
M1 - 2206276
ER -