• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanoscale >MoSx-coated NbS2 nanoflakes grown on glass carbon: an advanced electrocatalyst for the hydrogen evolution reaction
【24h】

MoSx-coated NbS2 nanoflakes grown on glass carbon: an advanced electrocatalyst for the hydrogen evolution reaction

机译：MoSx-coated NbS2 nanoflakes生长在玻璃碳:一个高级electrocatalyst氢进化的反应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Recent experimental and theoretical studies have demonstrated that two-dimensional (2D) transition metal dichalcogenide (TMDC) nanoflakes are one of the most promising candidates for non-noblemetal electrocatalysts for hydrogen evolution reaction (HER). However, it is still challenging to optimize their conductivity and enrich active sites for highly efficient electrochemical performance. Herein, we report a chemical vapor deposition (CVD) and thermal annealing two-step strategy to controllably synthesize hybrid electrocatalysts consisting of metallic NbS2 nanoflake backbones and a highly catalytic active MoSx nanocrystalline shell on polished commercial glass carbon (GC). In addition, the amount of MoSx in the hybrids can be easily adjusted. We first demonstrate that a small amount of MoSx significantly promotes the HER activity of 2D NbS2 nanoflakes, which is in good agreement with the density functional theory (DFT) calculation results. Moreover, the optimized MoSx@NbS2/GC electrocatalyst displays superior HER activity with overpotential of -164 mV at -10 mA cm(-2), a small Tafel slope of 43.2 mV dec(-1), and prominent electrochemical stability. This study provides a new path for enhancing the HER performance of 2D TMDC nanoflakes.
机译：最近的实验和理论研究证明了二维(2 d)过渡金属dichalcogenide (TMDC) nanoflakes之一non-noblemetal最有前途的候选人electrocatalysts析氢反应(她)。优化他们的电导率和丰富活跃高效的电化学的网站表演沉积(CVD)和热退火两步策略可控合成混合electrocatalysts金属NbS2组成nanoflake骨干和高催化活性MoSx纳米晶体外壳抛光商业玻璃碳(GC)。MoSx混合动力车可以很容易地调整。首先证明少量MoSx大大促进了她2 d的活动NbS2 nanoflakes,这是在良好的协议密度泛函理论(DFT)计算结果。electrocatalyst显示优越的她的活动过电压-164 mV马在-10厘米(2)小塔费尔斜率为43.2 mV 12月(1)著名的电化学稳定性。提供了一个提高她的新路径性能的2 d TMDC nanoflakes。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号