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Fluorine Doped Cagelike Carbon Electrocatalyst: An Insight into the Structure-Enhanced CO Selectivity for CO2 Reduction at High Overpotential.
ACS Nano ( IF 15.8 ) Pub Date : 2020-02-14 , DOI: 10.1021/acsnano.9b08528 Wei Ni 1 , Yifei Xue 2 , Xiaogang Zang 3 , Congxin Li 3 , Huaizhi Wang 3 , Zhiyu Yang , Yi-Ming Yan 3
ACS Nano ( IF 15.8 ) Pub Date : 2020-02-14 , DOI: 10.1021/acsnano.9b08528 Wei Ni 1 , Yifei Xue 2 , Xiaogang Zang 3 , Congxin Li 3 , Huaizhi Wang 3 , Zhiyu Yang , Yi-Ming Yan 3
Affiliation
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The critical bottleneck of electrocatalytic CO2 reduction reaction (CO2RR) lies in its low efficiency at high overpotential caused by competitive hydrogen evolution. It is challenging to develop an efficient catalyst achieving both high current density and high Faradaic efficiency (FE) for CO2RR. Herein, we synthesized fluorine-doped cagelike porous carbon (F-CPC) by purposely tailoring its structural properties. The optimized F-CPC possesses large surface area with moderate mesopore and abundant micropores as well as high electrical conductivity. When used as catalyst for CO2RR, F-CPC exhibits FE of 88.3% for CO at -1.0 V vs RHE with a current density of 37.5 mA·cm -2. Experimental results and finite element simulations demonstrate that the excellent CO2RR performance of F-CPC at high overpotential should be attributed to its structure-enhanced electrocatalytic process stemming from its cagelike morphology.
中文翻译：
氟掺杂的笼状碳电催化剂：深入了解结构增强的CO在高电势下还原CO的选择性。
电催化还原二氧化碳（CO2RR）的关键瓶颈在于竞争性氢气释放导致的高效率下的低效率。对于CO2RR而言，开发一种既能实现高电流密度又能实现高法拉第效率（FE）的高效催化剂是一项挑战。在这里，我们通过有目的地调整其结构特性，合成了氟掺杂的笼状多孔碳（F-CPC）。优化的F-CPC具有大的表面积，中等的中孔和丰富的微孔以及高电导率。当用作CO2RR的催化剂时，相对于RHE，F-CPC在-1.0 V的CO下显示出88.3％的FE，电流密度为37.5 mA·cm -2。
更新日期：2020-02-17
中文翻译：
氟掺杂的笼状碳电催化剂：深入了解结构增强的CO在高电势下还原CO的选择性。
电催化还原二氧化碳（CO2RR）的关键瓶颈在于竞争性氢气释放导致的高效率下的低效率。对于CO2RR而言，开发一种既能实现高电流密度又能实现高法拉第效率（FE）的高效催化剂是一项挑战。在这里，我们通过有目的地调整其结构特性，合成了氟掺杂的笼状多孔碳（F-CPC）。优化的F-CPC具有大的表面积，中等的中孔和丰富的微孔以及高电导率。当用作CO2RR的催化剂时，相对于RHE，F-CPC在-1.0 V的CO下显示出88.3％的FE，电流密度为37.5 mA·cm -2。
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