当前位置: X-MOL 学术Inorg. Chem. Front. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Efficient Co@CoPx core–shell nanochains catalyst for the oxygen evolution reaction†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-05-30 00:00:00 , DOI: 10.1039/c8qi00428e
Xiaotao Yuan 1, 2, 3, 4, 5 , Zhe Zhang 1, 2, 3, 4, 5 , Zichao Liu 1, 2, 3, 4, 5 , Xin Wang 1, 2, 3, 4, 5 , Chenlong Dong 1, 2, 3, 4, 5 , Muhammad Sohail Riaz 1, 2, 3, 4, 5 , Fuqiang Huang 1, 2, 3, 4, 5
Affiliation  

Co@CoPx core–shell nanochains were prepared via a direct-current arc-discharge method and subsequent phosphorization at 350 °C. The nanochains comprise nanospheres connected to each other with a length of several micrometers. The amount of CoPx can be easily changed by varying the phosphorization time. In the Co@CoPx core–shell structure, Co serves as a conductive channel, which improves the reaction kinetics of the oxygen evolution process on CoPx. Co metal can also inject electrons into CoPx, thus changing the work function of CoPx and improving its oxygen evolution efficiency. Based on the optimized structure, the Co@CoPx nanochains catalyst exhibits excellent oxygen evolution performance. Co@CoPx achieves an overpotential of 310 mV at a current density of 10 mA cm−2, which is lower than that of CoPx (418 mV), Co (408 mV), and RuO2 (317 mV). Furthermore, Co@CoPx exhibits good durability during the long-term electrochemical test.

中文翻译:

高效的Co @ CoP x核-壳纳米链催化剂,用于氧气释放反应

Co @ CoP x核-壳纳米链是通过直流电弧放电方法制备的,随后在350°C下进行了磷化处理。纳米链包括彼此连接的纳米球,纳米球的长度为几微米。通过改变磷化时间可以很容易地改变CoP x的量。在Co @ CoP x核-壳结构中,Co用作导电通道,从而改善了CoP x上析氧过程的反应动力学。Co金属也可以将电子注入扶贫X,从而改变缔约方会议的功函数X和改进其析氧效率。基于优化的结构,Co @ CoP x纳米链催化剂表现出优异的放氧性能。Co @ CoP x在10 mA cm -2的电流密度下实现310 mV的过电势,低于CoP x(418 mV),Co(408 mV)和RuO 2(317 mV)的过电势。此外,Co @ CoP x在长期电化学测试中显示出良好的耐久性。
更新日期:2018-05-30
down
wechat
bug