자료실

논문

논문

Rational Design of a Copper Cobalt Sulfide/Tungsten Disulfide Heterost…

페이지 정보

  • 작성자 : 관리자
  • 작성일 : 2023-11-23
  • 조회 : 36회

첨부파일

본문

integrating different components into a heterostructure is a novel approach that increases the number of active centers to enhance the catalytic activities of a catalyst.

This study uses an efficient, facile hydrothermal strategy to synthesize a unique heterostructure of copper cobalt sulfide and tungsten disulfide (CuCo 2 S 4 −WS 2 ) nanowires on a Ni foam (NF) substrate. The nanowire arrays (CuCo 2 S 4 −WS 2 /NF) with multiple integrated active sites exhibit small overpotentials of 202 (299) and 240 (320) mV for HER and OER at 20 (50) mA cm −2 and 1.54 V (10 mA cm −2 ) for an electrolyzer in 1.0 M KOH, surpassing commercial and previously reported catalysts. A solar electrolyzer composed of CuCo 2 S 4 −WS 2 bifunctional electrodes also produced significant amounts of hydrogen through a water splitting process. The remarkable performance is accredited to the extended electroactive surface area, reasonable density of states near the Fermi level, optimal adsorption free energies, and good charge transfer ability, further validating the excellent dual function of CuCo 2 S 4 −WS 2 /NF in electrochemical water splitting.

개인정보처리방침

Close

이메일무단수집거부

닫기