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Recent progress in nickel oxide-based electrodes for high-performance supercapacitors |
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| Authors: | Ugochi K. Chime Agnes C. Nkele Sabastine Ezugwu Assumpta C. Nwanya N.M. Shinde Mesfin Kebede Paul M. Ejikeme M. Maaza Fabian I. Ezema |
| Affiliation: | 1. Department of Physics and Astronomy, University of Nigeria Nsukka, Nigeria;2. Department of Physics & Astronomy, University of Western Ontario, 1151 Richmond St., London, ON N6A 3K7, Canada;3. Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West, 7129, P.O. Box 722, Somerset West, Western Cape Province, South Africa;4. UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk ridge, P.O. Box 392, Pretoria, South Africa;5. Global Frontier R&D Center for Hybrid Interface Materials, Pusan National University, Busan 46241, South Korea;6. Energy Materials, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa;7. Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu, Nigeria |
| Abstract: | In recent years, interest in nanostructured electrode materials for use in supercapacitors has been on the rise. Nickel oxide has been reported as a good candidate for supercapacitor applications due to its high theoretical capacitance and low cost. However, its poor electrical conductivity has resulted in actual poor specific capacitance and cycling ability. Over the years, researchers have studied various techniques to modify the structure and composition of NiO with the aim of improving its electrochemical performance. In this review, we opine that NiO-based electrodes can be fabricated using different approaches and different composite forms in order to obtain cells of high efficiency and specific capacitances. We discuss the recent advances in NiO-based electrodes fabricated using different approaches. |
| Keywords: | Supercapacitor Nanostructured electrodes NiO Electrochemical performance |
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