钟俊教授、冯坤副教授及其合作者在acs nano上发表论文-尊龙凯时

题目：

atomic manipulation to create high-valent fe⁴  for efficient and ultrastable oxygen evolution at industrial-level current density

作者：

yong feng^1#, huan wang^1#, kun feng¹*, chengyu li², shuo li¹, cheng lu¹, youyong li^1,3, ding ma²*, and jun zhong¹*

单位：

¹institute of functional nano and soft materials laboratory (funsom), jiangsu key laboratory of advanced negative carbon technologies, soochow university, suzhou 215123, china.

²beijing national laboratory for molecular sciences, new cornerstone science laboratory, college of chemistry and molecular engineering, peking university, beijing 100871, china.

³macao institute of materials science and engineering, macau university of science and technology, 999078 macau sar, china.

摘要：

manipulating the electronic structure of a catalyst at the atomic level is an effective but challenging way to improve the catalytic performance. here, by stretching the fe−o bond in feooh with an inserted mo atom, a fe−o−mo unit can be created, which will induce the formation of high-valent fe⁴  during the alkaline oxygen evolution reaction (oer). the highly active fe⁴  state has been clearly revealed by in situ x-ray absorption spectroscopy, which can both enhance the oxidation capability and lead to an efficient and stable adsorbate evolution mechanism (aem) pathway for the oer. as a result, the obtained fe−mo−ni₃s₂ catalyst exhibits both superior oer activity and outstanding stability, which can achieve an industrial-level current density of 1 a cm⁻² at a low overpotential of 259 mv (at 60 °c) and can stably work at the large current for more than 2000 h. moreover, by coupling with commercial pt/c, the fe−mo−ni₃s₂||pt/c system can be used in the anion exchange membrane cell to acquire 1 a cm⁻² for overall water splitting at 1.68 v (2.03 v for 4 a cm⁻²), outperforming the benchmark ruo₂||pt/c system. the efficient, low-cost, and ultrastable oer catalyst enabled by manipulating the atomic structure may provide potential opportunities for future practical water splitting.

影响因子：

15.8

分区情况：

一区

链接：

责任编辑：杜欣