Nanoporous Silver Telluride for Active Hydrogen Evolution
- Authors
- Kwon, H.[Kwon, H.]; Bae, D.[Bae, D.]; Won, D.[Won, D.]; Kim, H.[Kim, H.]; Kim, G.[Kim, G.]; Cho, J.[Cho, J.]; Park, H.J.[Park, H.J.]; Baik, H.[Baik, H.]; Jeong, A.R.[Jeong, A.R.]; Lin, C.-H.[Lin, C.-H.]; Chiang, C.-Y.[Chiang, C.-Y.]; Ku, C.-S.[Ku, C.-S.]; Yang, H.[Yang, H.]; Cho, S.[Cho, S.]
- Issue Date
- Apr-2021
- Publisher
- American Chemical Society
- Keywords
- catalyst; electrochemical synthesis; hydrogen evolution reaction; nanoporous structure; silver telluride (AgTe); X-ray spectroscopy
- Citation
- ACS Nano, v.15, no.4, pp.6540 - 6550
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Nano
- Volume
- 15
- Number
- 4
- Start Page
- 6540
- End Page
- 6550
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/90076
- DOI
- 10.1021/acsnano.0c09517
- ISSN
- 1936-0851
- Abstract
- Silver-based nanomaterials have been versatile building blocks of various photoassisted energy applications; however, they have demonstrated poor electrochemical catalytic performance and stability, in particular, in acidic environments. Here we report a stable and high-performance electrochemical catalyst of silver telluride (AgTe) for the hydrogen evolution reaction (HER), which was synthesized with a nanoporous structure by an electrochemical synthesis method. X-ray spectroscopy techniques on the nanometer scale and high-resolution transmission electron microscopy revealed an orthorhombic structure of nanoporous AgTe with precise lattice constants. First-principles calculations show that the AgTe surface possesses highly active catalytic sites for the HER with an optimized Gibbs free energy change of hydrogen adsorption (-0.005 eV). Our nanoporous AgTe demonstrates exceptional stability and performance for the HER, an overpotential of 27 mV, and a Tafel slope of 33 mV/dec. As a stable catalyst for hydrogen production, AgTe is comparable to platinum-based catalysts and provides a breakthrough for high-performance electrochemical catalysts. ©
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - ETC > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/90076)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.