daohang fenxiangbox searchbox qikanlogonew daohangnew searchboxnew navrightzone footerzone paper
中
Home > Journals > ACS Energy Letters
‹ Previous Article Next Article ›

Highly Active and Stable Water Splitting in Acidic Media Using a Bifunctional Iridium/Cucurbit[6]uril Catalyst AITranslate

Hanhui You; Dongshuang Wu; Zhening Chen; Fanfei Sun; Hao Zhang; Zhenhua Chen; Minna Cao; Wei Zhuang; Rong Cao;
P.R. China|University of the Chinese Academy of Sciences; Fujian Institute of Research on the Structure of Matter; Fujian Institute of Research on the Structure of Matter;University of the Chinese Academy of Sciences;University of the Chinese Academy of Sciences; Shanghai Institute of Applied Physics Chinese Academy of Sciences; P.R. China|University of the Chinese Academy of Sciences; Fujian Institute of Research on the Structure of Matter; P.R. China|University of the Chinese Academy of Sciences
AITranslate
Publisher: ACS
Share Citation Information Add to Favorites

    Scan to share on WeChat or Moments

Use WeChat scan.
Share with WeChat friends or Moments

Abstract AITranslate

Water electrolysis offers an ideal process for generating hydrogen, the most promising form of clean energy. Splitting water in acidic media has had limited progress to date because of the low anodic oxygen evolution reaction activity and serious catalyst degradation. Here, we report a bifunctional Ir catalyst stabilized by cucurbit[6]uril for water splitting in acidic media. We achieved a 10 mA/cm2 overall water-splitting current density at only 1.56 V, which is among the highest activities reported. Moreover, our cell showed a high stability of at least 20 h of continuous operation at 5 mA/cm2. Spectroscopic experiments and theoretical calculations revealed that the coordination interaction between Ir atoms and cucurbit[6]uril facilitates the controllable synthesis and stabilization of surface active IrOx species, which leads to the excellent catalytic activity and stability observed.

KeyWords AITranslate

No data

Basic Information:

DOI：https://doi.org/10.1021/acsenergylett.9b00553

Chinese Library Classification Number:

Citation Information:

Water electrolysis offers an ideal process for generating hydrogen, the most promising form of clean energy. Splitting water in acidic media has had limited progress to date because of the low anodic oxygen evolution reaction activity and serious catalyst degradation. Here, we report a bifunctional Ir catalyst stabilized by cucurbit[6]uril for water splitting in acidic media. We achieved a 10 mA/cm2 overall water-splitting current density at only 1.56 V, which is among the highest activities reported. Moreover, our cell showed a high stability of at least 20 h of continuous operation at 5 mA/cm2. Spectroscopic experiments and theoretical calculations revealed that the coordination interaction between Ir atoms and cucurbit[6]uril facilitates the controllable synthesis and stabilization of surface active IrOx species, which leads to the excellent catalytic activity and stability observed.

quote

GB/T 7714-2015 [1] Hanhui You, Dongshuang Wu, Zhening Chen, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.9b00553.
MLA [1] Hanhui You, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.9b00553.
APA [1] Hanhui You, Dongshuang Wu, Zhening Chen, Fanfei Sun, Hao Zhang, Zhenhua Chen, Minna Cao, Wei Zhuang, & Rong Cao. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.9b00553
IEEE [1] Hanhui You, Dongshuang Wu, Zhening Chen, Fanfei Sun, Hao Zhang, Zhenhua Chen, Minna Cao, Wei Zhuang, and Rong Cao, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.9b00553.