Fe0.8Zn0.2 Nanoparticles Wrapped in Mesoporous Nitrogen-Doped Carbon Layers as Electrocatalysts for an Efficient Oxygen Reduction Reaction
Fe0.8Zn0.2 Nanoparticles Wrapped in Mesoporous Nitrogen-Doped Carbon Layers as Electrocatalysts for an Efficient Oxygen Reduction Reaction
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包裹在介孔氮掺杂碳层中的 Fe0.8Zn0.2 纳米颗粒作为高效氧还原反应的电催化剂
DOI:
10.1021/acs.energyfuels.0c03069
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发表时间:
2020-12
期刊:
影响因子:
--
通讯作者:
Dawei Cao
中科院分区:
文献类型:
--
作者:
Weigeng Ke;Jinyu Yang;Yuan Liu;Jie Chen;Xiang Deng;Mingming Chen;Dawei Cao
An efficient oxygen reduction reaction (ORR) can be achieved by accelerating the movement of electrons, ions, reactants, and products. Here, we prepared core–shell nanohybrids with Fe0.8Zn0.2nanoparticles wrapped in mesoporous nitrogen-doped carbon layers (Fe0.8Zn0.2@MNC). Due to partial volatilization, the sample has high porosity and conductivity, which provides fast-moving channels for electrons, ions, reactants, and products. The coupling effect of trace zinc and iron metal is beneficial to improve the catalyst activity. The results showed that the prepared Fe0.8Zn0.2@MNC catalyst has an advanced ORR activity through a four-electron transfer process in an alkaline medium. Moreover, the onset potential and the Tafel slope of Fe0.8Zn0.2@MNC can reach 0.965 V (vs reversible hydrogen electrode (RHE)) and 59.3 mV dec–1, respectively, which are better than those for 20% Pt/C (0.943 V (vs RHE) and 75.1 mV dec–1). After durability tests, Fe0.8Zn0.2@MNC only shows a 3 mV negative shift of half-wave potential, which is much lower than 8 mV for 20% Pt/C.
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影响因子:
9.9
作者:
Niu, Hua-Jie;Zhang, Lu;Wang, Ai-Jun
通讯作者:
Wang, Ai-Jun
影响因子:
29.4
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影响因子:
9.9
作者:
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通讯作者:
Guilan Wen;Hua‐Jie Niu;Ai-Jun Wang;Zheng-Zhi Yin;Qian-Li Zhang;Jiu-Ju Feng
影响因子:
15.1
作者:
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通讯作者:
Lin Cui;Mingxing Chen;Ge Huo;Xianzhu Fu;Jingli Luo
影响因子:
22.1
作者:
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通讯作者:
Luigi Osmieri;R. Escudero-Cid;Alessandro H. A. Monteverde Videla;P. Ocón;S. Specchia