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  • 研究员
  • 博士生导师
  • 硕士生导师
  • 教师英文名称:Yarong Zheng
  • 教师拼音名称:zhengyarong
  • 电子邮箱:
  • 所在单位:化学系
  • 职务:化学系系主任
  • 学历:研究生(博士)毕业
  • 办公地点:昇华楼301
  • 性别:
  • 学位:博士学位
  • 在职信息:在职
  • 毕业院校:中国科学技术大学
  • 学科:无机化学
    物理化学
    材料学
    应用化学
论文成果
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In situ ammonium formation mediates efficient hydrogen production from natural seawater splitting
  • 发表刊物:Nat. Commun.
  • 摘要:Seawater electrolysis using renewable electricity offers an attractive route to sustainable hydrogen production, but the sluggish electrode kinetics and poor durability are two major challenges. We report a molybdenum nitride (Mo2N) catalyst for the hydrogen evolution reaction with activity comparable to commercial platinum on carbon (Pt/C) catalyst in natural seawater. The catalyst operates more than 1000 hours of continuous testing at 100 mA cm−2 without egradation, whereas massive precipitate (mainly magnesium hydroxide) forms on the Pt/C counterpart after 36 hours of operation at 10 mA cm−2. Our investigation reveals that ammonium groups generate in situ at the catalyst surface, which not only improve the connectivity of hydrogenbond networks but also suppress the local pH increase, enabling the enhanced performances. Moreover, a zero-gap membrane flow electrolyser assembled by this catalyst exhibits a current density of 1 A cm−2 at 1.87 V and 60 oC in simulated seawater and runs steadily over 900 hours.
  • 备注:Xiao-Long Zhang†, Peng-Cheng Yu†, Shu-Ping Sun†, Lei Shi, Peng-Peng Yang, Zhi-Zheng Wu, Li-Ping Chi, Ya-Rong Zheng,* , and Min-Rui Gao*
  • 论文类型:期刊论文
  • 卷号:15
  • 页面范围:9462
  • 是否译文:
  • 发表时间:2024-11-01
  • 发布期刊链接:https://www.nature.com/articles/s41467-024-53724-1