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High-performance hi...
High-performance high-entropy quinary-alloys as anode catalysts for direct ethylene glycol fuel cells
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Cheng, Yangshuai (författare)
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Sun, Yan (författare)
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Deng, Ximing (författare)
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- Zhang, Miao (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Zhang, Linwei (författare)
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Wang, Wei (författare)
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(creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
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Ingår i: International journal of hydrogen energy. - : Elsevier BV. - 0360-3199 .- 1879-3487. ; 48:22, s. 8156-8164
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
Nyckelord
- High entropy alloy
- Ethylene glycol electro-oxidation
- Fuel cells
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- ref (ämneskategori)
- art (ämneskategori)
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