Mechanisms and designs of asymmetrical electrochemical capacitors
Different charge storage mechanisms in electrochemical energy storage devices are reviewed, including non-Faradaic capacitive, Faradaic capacitive, Faradaic non-capacitive, and their combinations. Specifically, Faradaic capacitive (pseudocapacitive) storage and Faradaic non-capacitive (Nernstian) st...
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/44115/ |
| _version_ | 1848796841877962752 |
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| author | Akinwolemiwa, Bamidele Wei, Chaohui Chen, George Z. |
| author_facet | Akinwolemiwa, Bamidele Wei, Chaohui Chen, George Z. |
| author_sort | Akinwolemiwa, Bamidele |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Different charge storage mechanisms in electrochemical energy storage devices are reviewed, including non-Faradaic capacitive, Faradaic capacitive, Faradaic non-capacitive, and their combinations. Specifically, Faradaic capacitive (pseudocapacitive) storage and Faradaic non-capacitive (Nernstian) storage are attributed to the transfer of delocalised and localised valence electrons, respectively. Mathematical and graphical expressions of the respective storage performances are presented. The account is made especially for asymmetrical electrochemical capacitors (AECs), supercapattery and supercabattery. Both hypothetical and experimental examples are presented to demonstrate the merits of supercapattery that combines capacitive and Nernstian electrodes. Enhanced storage performance is shown by properly pairing and balancing the properties of the negatrode (negative electrode) and positrode (positive electrode) in the AEC or supercapattery. In addition, the design, laboratory manufacturing and performance of several stacks of bipolarly connected AEC cells are assessed in terms of commercial feasibility and promise. |
| first_indexed | 2025-11-14T19:54:24Z |
| format | Article |
| id | nottingham-44115 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:54:24Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-441152020-05-04T19:03:00Z https://eprints.nottingham.ac.uk/44115/ Mechanisms and designs of asymmetrical electrochemical capacitors Akinwolemiwa, Bamidele Wei, Chaohui Chen, George Z. Different charge storage mechanisms in electrochemical energy storage devices are reviewed, including non-Faradaic capacitive, Faradaic capacitive, Faradaic non-capacitive, and their combinations. Specifically, Faradaic capacitive (pseudocapacitive) storage and Faradaic non-capacitive (Nernstian) storage are attributed to the transfer of delocalised and localised valence electrons, respectively. Mathematical and graphical expressions of the respective storage performances are presented. The account is made especially for asymmetrical electrochemical capacitors (AECs), supercapattery and supercabattery. Both hypothetical and experimental examples are presented to demonstrate the merits of supercapattery that combines capacitive and Nernstian electrodes. Enhanced storage performance is shown by properly pairing and balancing the properties of the negatrode (negative electrode) and positrode (positive electrode) in the AEC or supercapattery. In addition, the design, laboratory manufacturing and performance of several stacks of bipolarly connected AEC cells are assessed in terms of commercial feasibility and promise. Elsevier 2017-09-01 Article PeerReviewed Akinwolemiwa, Bamidele, Wei, Chaohui and Chen, George Z. (2017) Mechanisms and designs of asymmetrical electrochemical capacitors. Electrochimica Acta, 247 . pp. 344-357. ISSN 0013-4686 Asymmetrical electrochemical capacitors; Supercapattery; Charge storage mechanisms; Pseudocapacitance; Delocalised valence electrons; Nernstian storage http://www.sciencedirect.com/science/article/pii/S0013468617313269 doi:10.1016/j.electacta.2017.06.088 doi:10.1016/j.electacta.2017.06.088 |
| spellingShingle | Asymmetrical electrochemical capacitors; Supercapattery; Charge storage mechanisms; Pseudocapacitance; Delocalised valence electrons; Nernstian storage Akinwolemiwa, Bamidele Wei, Chaohui Chen, George Z. Mechanisms and designs of asymmetrical electrochemical capacitors |
| title | Mechanisms and designs of asymmetrical electrochemical capacitors |
| title_full | Mechanisms and designs of asymmetrical electrochemical capacitors |
| title_fullStr | Mechanisms and designs of asymmetrical electrochemical capacitors |
| title_full_unstemmed | Mechanisms and designs of asymmetrical electrochemical capacitors |
| title_short | Mechanisms and designs of asymmetrical electrochemical capacitors |
| title_sort | mechanisms and designs of asymmetrical electrochemical capacitors |
| topic | Asymmetrical electrochemical capacitors; Supercapattery; Charge storage mechanisms; Pseudocapacitance; Delocalised valence electrons; Nernstian storage |
| url | https://eprints.nottingham.ac.uk/44115/ https://eprints.nottingham.ac.uk/44115/ https://eprints.nottingham.ac.uk/44115/ |