Development of Active Nitrogen-doped Cobalt Disulfide Catalyst for Hydrogen Evolution Reaction

• Main Authors: Yang, Yu-Hsiu, 楊玗修
• Other Authors: Chen, Chia-Chun
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/07190982791800748867

碩士 === 國立臺灣師範大學 === 化學系 === 104 === Because of the continuous increase of energy consumption, it is urgent to find the earth-abundant and eco-friendly energy sources. Among all the possible candidates, hydrogen energy has been considered one of the most promising alternatives, which has many advantages, including high energy conversion efficiency, few side reactions, almost complete combustion, and zero greenhouse gas emission. Among all the hydrogen generation methods, water electrolysis has been considered one of the most potential ways. Regular water electrolysis is operated under the noble metal catalysts, of which the price makes its further applications limited. Therefore, a low-cost, earth-abundant, and easily synthesized alternative should be rendered. In this work, we have already synthesized nitrogen-doped cobalt (II) disulfide using both hydrothermal and chemical vapor deposition, in which synergistic effects between nitrogen and cobalt disulfide not only produce a higher surface area but also expose a larger fraction of edge sites, leading to significant improvement in the hydrogen evolution reaction. The as-prepared sample was carefully examined under scanning electron microscope and linear sweep voltammetry, showing extra high specific area, ultra low overpotential, and long-term stability.