期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 741, 期 -, 页码 549-556出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.01.166
关键词
Hierarchical structure; Nanoflake; Nickel oxide; Supercapacitor; SILAR method
资金
- National Research Foundation of Korea (NRF) - Ministry of Science and ICT (KRF) [2016H1D3A1937977]
- Korea Electric Power Corporation [R17XA05-52]
- National Research Foundation of Korea [2016H1D3A1937977] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The nickel-based oxides or hydroxides are considered a promising electroactive material for supercapacitor application owing to its low cost, well-defined redox activity, and prospect of controllable nanostructures. However, control of nanomorphology and uniform deposition onto a conductive substrate for Ni-based materials remains a critical challenge. Herein, we demonstrate the controlled synthesis of hierarchical nanoflake structure of NiO thin film by a simple and inexpensive successive ionic layer adsorption and reaction (SILAR) method and its consequent effect on supercapacitive performances. The as-prepared NiO thin films confirmed kinetically controlled growth model for the anisotropic nanostructure through a systematic investigation of controlling reaction temperatures and times. The as-optimized binder-free NiO thin film electrodes exhibited a reversible electrochemical feature, providing a high specific capacitance of 674 F g(-1) and cycling stability of 72.5% after 2000 cycles. These performances of NiO thin films were attributed to its open mesoporous and large accessible area of hierarchical nanoflakes structure, as well as the fast ion diffusion into the active sites. This work opens new avenues for the design of high capacity metal oxide thin films with hierarchical architecture for electrochemical energy storage applications. (c) 2018 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