期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 102, 期 -, 页码 95-102出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2021.06.035
关键词
Cu-Ni; Nanoalloy; Supercapacitor; Electrocatalysis; Methanol oxidation reaction
资金
- Korea Electric Power Corpora-tion [R21XO01-9]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2021R1C1C1011089]
- National Research Foundation of Korea [2021R1C1C1011089] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study demonstrates a scalable alcohothermal process to obtain ultra-small and monodispersed Cu-Ni nanoalloy particles, showing excellent electrochemical performance for supercapacitor and methanol oxidation applications. The high conductivity, fast electron transport, and large specific surface area of the ultra-small nanoalloy particles contribute to their superior electrochemical properties.
Ultra-small, pristine nanoalloy particles have attracted considerable attention for applications ranging from electrocatalysis to electrochemical energy storage owing to their high conductivity and large specific surface area. However, their practical deployment relies on a controllable process is low-cost, scalable, and results in numerous monodispersed particles. In this work, we demonstrate an alcohothermal process that is scalable to obtain ultra-small (r < 4 nm) and monodispersed (similar to 4.1 +/- 0.5 nm) Cu-Ni nanoalloy particles. Ethylene-glycol was used as a reaction medium that also acts as an in situ reducing and capping agent responsible for nanoalloy formation. The prepared nanoalloy particles were electrochemically tested for supercapacitor and methanol-oxidation applications. The nanoalloy electrode showed a desirable specific capacitance of 858F g(-1) at a current density of 1 Ag-1 with good cyclic stability. As a catalyst for methanol-oxidation, the nanoalloy showed a high current density of similar to 191.5 mA cm(-2). The methanol-oxidation reaction current reached 156 mA while maintaining 83% of its initial value, even after 300 cycles. The observed superior electrochemical performance is attributed to the high conductivity, fast electron transport, and large specific surface associated with ultra-small Cu-Ni nanoalloy particles. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据