标题：Ultrathin dendritic IrTe nanotubes for an efficient oxygen evolution reaction in a wide pH range
作者：Shi, Qiurong; Zhu, Chengzhou; Du, Dan; Wang, Jin; Xia, Haibing; Engelhard, Mark H.; Feng, Shuo; Lin, Yuehe
作者机构：[Shi, Qiurong; Zhu, Chengzhou; Du, Dan; Feng, Shuo; Lin, Yuehe] Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA.; [Zhu, Chengzhou; 更多
通讯作者地址：[Zhu, CZ; Du, D; Lin, YH]Washington State Univ, Sch Mech & Mat Engn, Pullman, WA 99164 USA;[Zhu, CZ; Du, D]Cent China Normal Univ, Coll Chem, Minist E 更多
来源：JOURNAL OF MATERIALS CHEMISTRY A
摘要：The shape control of Ir-based nanostructured materials, which are considered as the state-of-the-art anode electrocatalyst candidates toward the oxygen evolution reaction (OER), has been rarely reported. Here, we reported an efficient synthesis of ultrathin dendritic IrTe nanotubes (NTs) via a galvanic replacement reaction using Te nanowires as the template at 190 degrees C for 1 h. The as-obtained IrTe NTs exhibited improved electrocatalytic activity and stability toward the OER with a much smaller overpotential of 290 mV and Tafel slope of 60.3 mV dec(-1) to attain a current density of 10 mA cm(-2) in acidic medium, compared with commercial IrO2 nanoparticles. Moreover, IrTe NTs also demonstrated enhanced electrocatalytic performances in neutral and alkaline media. The outstanding electrochemical properties of IrTe NTs in a wide pH range hold great promise in energy storage and conversion devices.