Ultrathin CuNi Nanosheets for CO2 Reduction and O2 Reduction Reaction in Fuel Cells,ACS Materials Letters

当前位置： X-MOL 学术 › ACS Mater. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Ultrathin CuNi Nanosheets for CO2 Reduction and O2 Reduction Reaction in Fuel Cells
ACS Materials Letters ( IF 9.6 ) Pub Date : 2021-07-02 , DOI: 10.1021/acsmaterialslett.1c00351
Yibo Yan ₁ , Zhengping Zhao ₂ , Jun Zhao ₃ , Yaohui Xu ₁ , Yifan Xu ₁ , Yuhan Zhao ₁ , Wenfei Tang ₁ , Jong-Min Lee ₃

Affiliation

Developing efficient electrocatalysts applicable to CO₂ reduction reaction and fuel cells has drawn great attention for energy conservation and environmental protection. Molecular conversion of CO₂ to valuable products and fuel cells functioning with ultrahigh energy efficiencies is critical to remediate the global warming and energy crisis. Here, ultrathin hexagonal CuNi nanosheets are demonstrated to drive CO₂ reduction to C ≥ 2 products with a high Faradaic efficiency (80.5%) at −1.5 V vs RHE. Modulation of the d-band states, intermediate binding energy, and interatomic synergistic interaction between Ni and Cu are crucial for the enhancement of catalytic activity through intermediate binding control and boosting of charge transfer kinetics. In addition, a four-electron oxygen reduction reaction (ORR) process is validated for the ultrahigh performance in steady-state hydrogen–air fuel cells.

中文翻译：

用于燃料电池中 CO2 还原和 O2 还原反应的超薄 CuNi 纳米片

开发适用于CO ₂还原反应和燃料电池的高效电催化剂已引起节能和环境保护的极大关注。将 CO ₂分子转化为具有超高能效的有价值的产品和燃料电池对于修复全球变暖和能源危机至关重要。在这里，超薄的六边形 CuNi 纳米片被证明可以驱动 CO ₂减少到 C ≥ 2 产品，在 -1.5 V vs RHE 时具有高法拉第效率 (80.5%)。d 带态的调制、中间结合能以及 Ni 和 Cu 之间的原子间协同相互作用对于通过中间结合控制和电荷转移动力学增强来增强催化活性至关重要。此外，四电子氧还原反应（ORR）过程在稳态氢-空气燃料电池中的超高性能得到验证。

更新日期：2021-08-02

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11