我组孙悦 周赟杰在Appl Catal B上发表论文

题目：

Synergistic Cu@CoO_x core-cage structure on carbon layers as highly activeand durable electrocatalysts for methanol oxidation

作者：

Yue Sun¹, Yunjie Zhou¹, Cheng Zhu, Wenjing Tu, Huibo Wang, Hui Huang, Yang Liu^⁎,Mingwang Shao^⁎, Jun Zhong^⁎, Shuit-Tong Lee, Zhenhui Kang^⁎

单位：

Institute of Functional Nano & Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University,Suzhou, 215123, PR China

摘要：

Active and inexpensive electrocatalysts for methanol oxidation reaction (MOR) are highly required for thepractical application of direct methanol fuel cells (DMFCs). However, efficient MOR is limited by using theexpensive and rare noble metal-based catalysts. Here we report a Cu@CoO_x core-cage nanostructure on carbonlayers (CLs) for superior electrocatalysis of MOR in the alkaline media, which shows an excellent specific activityof 150.41 mA cm⁻² and a high mass activity of 467.94 mA mg^-1 at the potential of 0.8 V vs. SCE (1.85 V vs. RHE)in 1 M KOH + 1 M CH₃OH. It represents the highest MOR activity ever reported for noble metal-free catalysts.Synchrotron radiation based in-situ X-ray absorption spectroscopy reveals that the outside CoO_x cage can form ahigh Co⁴⁺ state to easily oxidize methanol, while the adsorption experiments indicate that Cu can act as themethanol adsorption center. The capture-catalysis process on the core-cage structure thus leads to the excellentMOR activity. The CLs can also anchor the Cu@CoO_x particles and accelerate the charge transport to enhance theperformance. The Cu@CoO_x-CLs catalyst is economical, abundant, highly active and stable, which has the potential to act as a good alternate material for noble metal-based catalysts in DMFCs.

影响因子：

16.683

分区情况：

1区

链接：  

https://www.sciencedirect.com/science/article/pii/S0926337318311706?via%3Dihub