TY - JOUR
T1 - High-performance high-entropy quinary-alloys as anode catalysts for direct ethylene glycol fuel cells
AU - Cheng, Yangshuai
AU - Sun, Yan
AU - Deng, Ximing
AU - Zhang, Miao
AU - Zhang, Linwei
AU - Wang, Wei
N1 - Publisher Copyright:
© 2022 Hydrogen Energy Publications LLC
PY - 2023/3/12
Y1 - 2023/3/12
N2 - Noble metals are the most commonly used electrocatalysts, but due to the high-cost and scarcity, improving their utilization has become a hot topic. As the Pt-based high-entropy alloy (HEA) can greatly increase the activity of catalyst and increase the utilization of noble metal, herein, a HEA with promising performance in ethylene glycol oxidation reaction (EGOR) is developed. The EGOR results show that, the onset potential of PtPdAuNiCo/C is 0.55 V, which is 20 mV lower than Pt/C (0.57 V) reference. Besides, the PtPdAuNiCo/C exhibits a high activity of 0.482 A mg−1PtPdAu, which is 2.18 times of Pt/C (0.221 A mg−1Pt) reference. And the current retention rate of PtPdAuNiCo/C (81.3%) is also higher than Pt/C (73.0%) reference in 500-cycle stability test. When as-obtained PtPdAuNiCo/C assembled into a direct ethylene glycol fuel cell, it exhibits a high-power density of 8.38 mW cm−2. It is 1.40 times than that of Pt/C (6.00 mW cm−2) reference. This work would be a good reference to HEA materials application on electrocatalysis in future.
AB - Noble metals are the most commonly used electrocatalysts, but due to the high-cost and scarcity, improving their utilization has become a hot topic. As the Pt-based high-entropy alloy (HEA) can greatly increase the activity of catalyst and increase the utilization of noble metal, herein, a HEA with promising performance in ethylene glycol oxidation reaction (EGOR) is developed. The EGOR results show that, the onset potential of PtPdAuNiCo/C is 0.55 V, which is 20 mV lower than Pt/C (0.57 V) reference. Besides, the PtPdAuNiCo/C exhibits a high activity of 0.482 A mg−1PtPdAu, which is 2.18 times of Pt/C (0.221 A mg−1Pt) reference. And the current retention rate of PtPdAuNiCo/C (81.3%) is also higher than Pt/C (73.0%) reference in 500-cycle stability test. When as-obtained PtPdAuNiCo/C assembled into a direct ethylene glycol fuel cell, it exhibits a high-power density of 8.38 mW cm−2. It is 1.40 times than that of Pt/C (6.00 mW cm−2) reference. This work would be a good reference to HEA materials application on electrocatalysis in future.
KW - Ethylene glycol electro-oxidation
KW - Fuel cells
KW - High entropy alloy
UR - https://www.scopus.com/pages/publications/85144810365
U2 - 10.1016/j.ijhydene.2022.11.214
DO - 10.1016/j.ijhydene.2022.11.214
M3 - 文章
AN - SCOPUS:85144810365
SN - 0360-3199
VL - 48
SP - 8156
EP - 8164
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 22
ER -
