Overall water splitting by graphdiyne-exfoliated and -sandwiched layered double-hydroxide nanosheet arrays

• DOI: 10.1038/s41467-018-07790-x
• Publication Date: 2018-12-10T11:13:26Z
• Authors: Lan Hui; Yurui Xue; Bolong Huang; Huidi Yu; Chao Zhang; Danyan Zhang; Dianzeng Jia; Yingjie Zhao; Yongjun Li; Huibiao Liu; Yuliang Li
• Keywords: Nanosheet; Oxygen evolution; Layered double hydroxides; Cobalt hydroxide

It is of great urgency to develop efficient, cost-effective, stable and industrially applicable electrocatalysts for renewable energy systems. But there are still few candidate materials. Here we show a bifunctional electrocatalyst, comprising graphdiyne-exfoliated -sandwiched iron/cobalt layered double-hydroxide nanosheet arrays grown on nickel foam, the oxygen hydrogen evolution reactions. Theoretical experimental data revealed that charge transport kinetics structure were superior double-hydroxide, prerequisite improved electrocatalytic performance. The incorporation with graphdiyne increased number catalytically active sites prevented corrosion, leading greatly enhanced activity stability reaction, as well overall water splitting. Our results suggest use might open up new pathways design fabrication earth-abundant, functional, smart electrode materials practical applications.