Frustrated Lewis pair engineering on ceria to improve methanol oxidation activity of Pt for direct methanol fuel cell applications
Frustrated Lewis pair engineering on ceria to improve methanol oxidation activity of Pt for direct methanol fuel cell applications
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二氧化铈上的受阻路易斯对工程可提高直接甲醇燃料电池应用中 Pt 的甲醇氧化活性
DOI:
10.1016/j.ijhydene.2022.11.188
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发表时间:
2022-12
影响因子:
7.2
通讯作者:
Cai Weiwei
中科院分区:
文献类型:
--
作者:
Xu Guodong;Lei Yun;Wu Keyu;Lv Rongguan;Li Jing;Sun Xiujuan;Cai Weiwei
Practical application of direct methanol fuel cell (DMFC) technology is greatly hindered by the strong dependence of anodic methanol oxidation reaction (MOR) on precious Pt based catalyst and the unsatisfying performance of Pt. Therefore, increasing the utilization and the catalytic performance of Pt toward MOR in DMFC is urgent. Here in this work, CeO2is modifiedviaa plasma-phosphating combing strategy and is invited as Frustrated Lewis Pair to assist the catalytic MOR process on Pt sites. Simultaneously, the plasma-phosphating combing strategy leads to negatively charged sites on CeO2surface, which can be functioned as host for Pt anchoring, facilitating the even dispersion of Pt nanocrystals. Besides, this strategy also has an effect on the Ce3+/Ce4+ratio and vacancy oxygen ratio on CeO2surface, which are critical to the adsorbed OH generation and anti-CO poisoning ability, thus boosting the MOR catalytic activity of Pt. DMFC device therefore exhibits ca. 30% maximum power density enhancement compared with the commercial Pt/C based DMFC.
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影响因子:
6.2
作者:
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通讯作者:
Xieraili Maimaitiyiming
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7.2
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