当前位置：
X-MOL 学术
›
Angew. Chem. Int. Ed.
›
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.)
A Robust PtNi Nanoframe/N‐Doped Graphene Aerogel Electrocatalyst with Both High Activity and Stability
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-07 , DOI: 10.1002/anie.202015679 Jing Yang 1 , René Hübner 2 , Jiangwei Zhang 3 , Hao Wan 4 , Yuanyuan Zheng 1 , Honglei Wang 5 , Haoyuan Qi 6 , Lanqi He 5 , Yi Li 1 , Amare Aregahegn Dubale 1 , Yujing Sun 1 , Yuting Liu 7 , Daoling Peng 7 , Yuezhong Meng 1 , Zhikun Zheng 5 , Jan Rossmeisl 4 , Wei Liu 8
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-07 , DOI: 10.1002/anie.202015679 Jing Yang 1 , René Hübner 2 , Jiangwei Zhang 3 , Hao Wan 4 , Yuanyuan Zheng 1 , Honglei Wang 5 , Haoyuan Qi 6 , Lanqi He 5 , Yi Li 1 , Amare Aregahegn Dubale 1 , Yujing Sun 1 , Yuting Liu 7 , Daoling Peng 7 , Yuezhong Meng 1 , Zhikun Zheng 5 , Jan Rossmeisl 4 , Wei Liu 8
Affiliation
|
Insufficient catalytic activity and stability and high cost are the barriers for Pt‐based electrocatalysts in wide practical applications. Herein, a hierarchically porous PtNi nanoframe/N‐doped graphene aerogel (PtNiNF‐NGA) electrocatalyst with outstanding performance toward methanol oxidation reaction (MOR) in acid electrolyte has been developed via facile tert‐butanol‐assisted structure reconfiguration. The ensemble of high‐alloying‐degree‐modulated electronic structure and correspondingly the optimum MOR reaction pathway, the structure superiorities of hierarchical porosity, thin edges, Pt‐rich corners, and the anchoring effect of the NGA, endow the PtNiNF‐NGA with both prominent electrocatalytic activity and stability. The mass and specific activity (1647 mA mgPt−1, 3.8 mA cm−2) of the PtNiNF‐NGA are 5.8 and 7.8 times higher than those of commercial Pt/C. It exhibits exceptional stability under a 5‐hour chronoamperometry test and 2200‐cycle cyclic voltammetry scanning.
中文翻译：
具有高活性和稳定性的坚固耐用的PtNi纳米框架/ N掺杂石墨烯气凝胶电催化剂
催化活性不足，稳定性和成本高昂是Pt基电催化剂在实际应用中的障碍。在此，通过简便的叔丁醇辅助结构重构，开发了具有多孔性能的PtNi纳米框架/ N掺杂石墨烯气凝胶（PtNiNF-NGA）电催化剂，对酸性电解质中的甲醇氧化反应（MOR）具有出色的性能。高合金化度调制电子结构的集合以及相应的最佳MOR反应路径，分层孔隙率，薄边缘，富Pt角和NGA的锚固效应的结构优势，赋予了PtNiNF-NGA两者兼具的优势突出的电催化活性和稳定性。质量和比活性（1647毫安毫克铂-1，3.8毫安厘米-2）的PtNiNF-NGA分别是市售Pt / C的5.8和7.8倍。在5小时计时电流法测试和2200周期循环伏安法扫描下，它具有出色的稳定性。
更新日期：2021-04-12
中文翻译：
具有高活性和稳定性的坚固耐用的PtNi纳米框架/ N掺杂石墨烯气凝胶电催化剂
催化活性不足，稳定性和成本高昂是Pt基电催化剂在实际应用中的障碍。在此，通过简便的叔丁醇辅助结构重构，开发了具有多孔性能的PtNi纳米框架/ N掺杂石墨烯气凝胶（PtNiNF-NGA）电催化剂，对酸性电解质中的甲醇氧化反应（MOR）具有出色的性能。高合金化度调制电子结构的集合以及相应的最佳MOR反应路径，分层孔隙率，薄边缘，富Pt角和NGA的锚固效应的结构优势，赋予了PtNiNF-NGA两者兼具的优势突出的电催化活性和稳定性。质量和比活性（1647毫安毫克铂-1，3.8毫安厘米-2）的PtNiNF-NGA分别是市售Pt / C的5.8和7.8倍。在5小时计时电流法测试和2200周期循环伏安法扫描下，它具有出色的稳定性。
京公网安备 11010802027423号