Cobalt-doped tungsten suboxides for supercapacitor applications
A crucial hurdle in developing supercapacitors is the creation of metal oxides with nanoscale structures that possess improved chemically active surfaces, ion/charge transport kinetics, and minimized ion-diffusion pathways. A metal-doping strategy to produce oxygen vacancies and increase electrical...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Elsevier
2023
|
| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/42032/ http://umpir.ump.edu.my/id/eprint/42032/1/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications_ABST.pdf http://umpir.ump.edu.my/id/eprint/42032/2/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications.pdf |
| _version_ | 1848826500549181440 |
|---|---|
| author | Thalji, Mohammad R. Ali, Gomaa A. M. Shima, Jae Jin Chong, Kwok Feng |
| author_facet | Thalji, Mohammad R. Ali, Gomaa A. M. Shima, Jae Jin Chong, Kwok Feng |
| author_sort | Thalji, Mohammad R. |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | A crucial hurdle in developing supercapacitors is the creation of metal oxides with nanoscale structures that possess improved chemically active surfaces, ion/charge transport kinetics, and minimized ion-diffusion pathways. A metal-doping strategy to produce oxygen vacancies and increase electrical conductivity has proven effective for designing high-performance materials for energy storage devices. Herein, cobalt-doped tungsten suboxide (Co-doped W18O49) is grown on carbon cloth (CC) using a solvothermal approach and used as an electrode material for supercapacitor applications for the first time. Through this strategy, structurally distorted W18O49 is obtained by detecting a more apparent amorphous area caused by forming more oxygen vacancies with the bending of the lattice fringes. Benefiting from the synergy of more oxygen vacancies, increased lattice spacing, a high specific surface area, and accelerated ion diffusion, the Co-doped W18O49/CC electrode achieves a specific capacity of 475 C g−1 (792 F g−1) at a current density of 1.0 A g−1, which is superior to that of the undoped W18O49/CC (259 C g−1, 432 F g−1) and among the highest reported to date. Interestingly, the asymmetric supercapacitor device assembled using Co-doped W18O49/CC//AC/CC can provide a high energy density of 35.0 Wh kg−1. This strategy proves that the distortion of the W18O49 structure by Co doping improves the ion storage performance and self-discharge behavior. Also, it can enhance the energy storage performance of other electrode materials. |
| first_indexed | 2025-11-15T03:45:49Z |
| format | Article |
| id | ump-42032 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T03:45:49Z |
| publishDate | 2023 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-420322024-07-22T04:48:33Z http://umpir.ump.edu.my/id/eprint/42032/ Cobalt-doped tungsten suboxides for supercapacitor applications Thalji, Mohammad R. Ali, Gomaa A. M. Shima, Jae Jin Chong, Kwok Feng Q Science (General) TP Chemical technology A crucial hurdle in developing supercapacitors is the creation of metal oxides with nanoscale structures that possess improved chemically active surfaces, ion/charge transport kinetics, and minimized ion-diffusion pathways. A metal-doping strategy to produce oxygen vacancies and increase electrical conductivity has proven effective for designing high-performance materials for energy storage devices. Herein, cobalt-doped tungsten suboxide (Co-doped W18O49) is grown on carbon cloth (CC) using a solvothermal approach and used as an electrode material for supercapacitor applications for the first time. Through this strategy, structurally distorted W18O49 is obtained by detecting a more apparent amorphous area caused by forming more oxygen vacancies with the bending of the lattice fringes. Benefiting from the synergy of more oxygen vacancies, increased lattice spacing, a high specific surface area, and accelerated ion diffusion, the Co-doped W18O49/CC electrode achieves a specific capacity of 475 C g−1 (792 F g−1) at a current density of 1.0 A g−1, which is superior to that of the undoped W18O49/CC (259 C g−1, 432 F g−1) and among the highest reported to date. Interestingly, the asymmetric supercapacitor device assembled using Co-doped W18O49/CC//AC/CC can provide a high energy density of 35.0 Wh kg−1. This strategy proves that the distortion of the W18O49 structure by Co doping improves the ion storage performance and self-discharge behavior. Also, it can enhance the energy storage performance of other electrode materials. Elsevier 2023-10-01 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/42032/1/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications_ABST.pdf pdf en http://umpir.ump.edu.my/id/eprint/42032/2/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications.pdf Thalji, Mohammad R. and Ali, Gomaa A. M. and Shima, Jae Jin and Chong, Kwok Feng (2023) Cobalt-doped tungsten suboxides for supercapacitor applications. Chemical Engineering Journal, 473 (145341). pp. 1-15. ISSN 1385-8947. (Published) https://doi.org/10.1016/j.cej.2023.145341 https://doi.org/10.1016/j.cej.2023.145341 |
| spellingShingle | Q Science (General) TP Chemical technology Thalji, Mohammad R. Ali, Gomaa A. M. Shima, Jae Jin Chong, Kwok Feng Cobalt-doped tungsten suboxides for supercapacitor applications |
| title | Cobalt-doped tungsten suboxides for supercapacitor applications |
| title_full | Cobalt-doped tungsten suboxides for supercapacitor applications |
| title_fullStr | Cobalt-doped tungsten suboxides for supercapacitor applications |
| title_full_unstemmed | Cobalt-doped tungsten suboxides for supercapacitor applications |
| title_short | Cobalt-doped tungsten suboxides for supercapacitor applications |
| title_sort | cobalt-doped tungsten suboxides for supercapacitor applications |
| topic | Q Science (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/42032/ http://umpir.ump.edu.my/id/eprint/42032/ http://umpir.ump.edu.my/id/eprint/42032/ http://umpir.ump.edu.my/id/eprint/42032/1/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications_ABST.pdf http://umpir.ump.edu.my/id/eprint/42032/2/Cobalt-doped%20tungsten%20suboxides%20for%20supercapacitor%20applications.pdf |