N-doped hollow carbon nanospheres as platinum anchoring material for efficient hydrogen evolution
N-doped hollow carbon nanospheres as platinum anchoring material for efficient hydrogen evolution
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DOI：
10.1016/j.apsusc.2018.08.033
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发表时间：
2018-11
影响因子：
6.7
通讯作者：
Lili Fan;Xinxin Du;Zixi Kang;Hailing Guo;Wenpei Kang;Ming Xue;Daofeng Sun
中科院分区：
文献类型：
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作者：
Lili Fan;Xinxin Du;Zixi Kang;Hailing Guo;Wenpei Kang;Ming Xue;Daofeng Sun
铂基材料仍然是析氢反应最有效的电催化剂。更智能的材料和策略锚定铂与提高利用效率的要求很高。在这项工作中，从金属-有机框架中有针对性地制备了n掺杂的空心碳纳米球，用于In -situ铂分散。通过简单的电化学方法，将铂纳米粒子成功地固定在碳纳米球修饰的电极表面，该电极在h2so4中表现出优异的HER性能，具有低起始过电位、小Tafel斜率（33 mV decade−1）、高电流密度（过电位40 mV达到电流密度10 mA cm−2）和高稳定性(4000个循环伏安（CV）循环和总30 h的高电流密度(10，50和100 mA cm−2)计时电流电解)。铂纳米球与碳纳米球之间的电子传递和协同作用促进了铂纳米球具有优异的电催化活性和耐久性。这项工作为mof的高效支撑材料的开发提供了见解，为未来的水分解设计了高效的铂基电催化剂。
Platinum-based materials remain as the most effective electrocatalysts for hydrogen evolution reaction. Smarter material and strategy for anchoring platinum with enhanced utilization efficiency are highly demanded. In this work, N-doped hollow carbon nanospheres are prepared targetedly from a metal-organic framework forin-situplatinum dispersion. Through a simple electrochemical method, platinum nanoparticles are successfully anchored on the surface of the carbon nanospheres decorated electrode, which exhibits exceptional HER performance in H2SO4with low onset overpotential, small Tafel slope (33 mV decade−1), high current density (overpotentials of 40 mV to reach the current density of 10 mA cm−2) and high stability (4000 cyclic voltammetry (CV) cycles and total 30 h of high current density (10, 50 and 100 mA cm−2) chronoamperometric electrolysis). The superior electrocatalytic activity and durability can be attributed to the facilitated electron transport and synergistic effects between platinum and carbon nanospheres. This work provides an insight into the development of efficient support materials from MOFs to design efficient platinum-based electrocatalysts for future water splitting.