碩士 / 國立中興大學 / 化學系所 / 107 / Silver (Ag) has a high electrical and thermal conductivity, low cost, and is relatively abundant in the earth compared to other Pt-group metals. Unlike Pt-related noble metals, the poor hydrogen evolution reaction (HER) activity of Ag in acidic environments makes it rarely considered as a potential HER electrocatalyst. We demonstrate a spongy-like highly nanoporous Ag foam obtained using a simple Ag surface treatment through the repetitively electrochemical anodic formation of AgBr/cathodic reduction back to Ag exhibited Pt-like high HER activities. The spongy-like nanoporous Ag foam effectively increases the number of surface active sites and lowers the Gibbs free energy of adsorbed atomic hydrogen (Had) on catalysts (∆GM-H) from multiple Ag grains constructing nanoarchitecture branches.
| Identifer | oai:union.ndltd.org:TW/107NCHU5065002 |
| Date | January 2018 |
| Creators | Yi-Ching Wu, 吳怡靜 |
| Contributors | 黃景帆 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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