Ultrafine Defective RuO2 Electrocatayst Integrated on Carbon Cloth for Robust Water Oxidation in Acidic Media
Ultrafine Defective RuO2 Electrocatayst Integrated on Carbon Cloth for Robust Water Oxidation in Acidic Media
复制标题
集成在碳布上的超细缺陷 RuO2 电催化剂可在酸性介质中实现水的稳健氧化
DOI：
10.1002/aenm.201901313
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发表时间：
2019-09-01
影响因子：
27.8
通讯作者：
Chen, Liang
中科院分区：
文献类型：
--
作者：
Ge, Ruixiang;Li, Lei;Chen, Liang
在酸性介质中开发高效耐用的析氧反应（OER）电催化剂具有吸引力，但仍然具有挑战性。本研究以碳布为基底，通过浸涂、退火和酸蚀等方法成功制备了缺陷型二氧化钌纳米粒子。作为自支撑电催化剂，它在0.5 M H2SO4中表现出179 mV的超低过电位。更重要的是，高活性可以很好地保持20 h。密度泛函计算表明，缺陷不仅可以增加活性中心的数量，而且可以提高本征OER活性。
Developing efficient and durable electrocatalysts for the oxygen evolution reaction (OER) in acidic media is attractive but still challenging. In this study, ultrafine defective RuO2 nanoparticles are successfully prepared on carbon cloth by means of dip-coating, annealing, and acid etching. As a self-supported electrocatalyst, it exhibits an ultralow overpotential of 179 mV in 0.5 M H2SO4. More importantly, the high activity can be well maintained for 20 h. The density functional calculations revealed that the defect can not only increase the number of active sites but also improve the intrinsic OER activity.