Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors
Slow reaction kinetics and large volume change limit the application of cobalt phosphide (CoP) in supercapacitors. Defect engineering and surface coating are regarded as two effective strategies for them. Herein, nickel (Ni) doped CoP (Ni-CoP) nanowire arrays are vertically grown on the surface of a...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Next Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949821X25000894 |
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| author | Shuting Jia Yangyang Luo Yuanjie Yi Huaming Qian Zhengkui Li Chunran Wang Yuhui Xu Gaini Zhang Huijuan Yang Guiqiang Cao Jingjing Wang Wenbin Li Xifei Li |
| author_facet | Shuting Jia Yangyang Luo Yuanjie Yi Huaming Qian Zhengkui Li Chunran Wang Yuhui Xu Gaini Zhang Huijuan Yang Guiqiang Cao Jingjing Wang Wenbin Li Xifei Li |
| author_sort | Shuting Jia |
| collection | DOAJ |
| description | Slow reaction kinetics and large volume change limit the application of cobalt phosphide (CoP) in supercapacitors. Defect engineering and surface coating are regarded as two effective strategies for them. Herein, nickel (Ni) doped CoP (Ni-CoP) nanowire arrays are vertically grown on the surface of activated carbon cloth, followed by zinc oxide (ZnO) coating via an atomic layer deposition method. Ni doping can optimize electron redistribution of CoP to promote its electron transport and generate more active sites. Coated ZnO can not only inhibit the volume change of Ni-CoP during cyclic charge and discharge processes, but also provide additional pseudocapacitance. Benefiting from the synergistic effect of the Ni doping and ZnO coating, the optimal Ni-CoP@ZnO-6 demonstrates a high specific capacity of 877 C g−1 at 1 A g−1 and capacity retention of 83.3% at 15 A g−1. Compared with Ni-CoP, the Ni-CoP@ZnO-6 shows an increased cyclic stability of 15.29% after 10,000 cycles. The assembled hybrid supercapacitor combining Ni-CoP@ZnO-6 with activated carbon has an energy density of 25.7 Wh kg−1 at 459.3 W kg−1, and 2 serially connected HSCs can power a light-emitting diode and timer. The work offers a novel strategy to promote the electrochemical performance of transition-metal compounds for supercapacitors. |
| format | Article |
| id | doaj-art-e063652ce24e45d78caa8457641b7447 |
| institution | OA Journals |
| issn | 2949-821X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Energy |
| spelling | doaj-art-e063652ce24e45d78caa8457641b74472025-08-20T02:05:12ZengElsevierNext Energy2949-821X2025-07-01810032610.1016/j.nxener.2025.100326Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitorsShuting Jia0Yangyang Luo1Yuanjie Yi2Huaming Qian3Zhengkui Li4Chunran Wang5Yuhui Xu6Gaini Zhang7Huijuan Yang8Guiqiang Cao9Jingjing Wang10Wenbin Li11Xifei Li12Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaCorresponding authors.; Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaKey Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaCorresponding authors.; Key Laboratory of Advanced Batteries Materials for Electric Vehicles of China Petroleum and Chemical Industry Federation, Institute of Advanced Electrochemical Energy, School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, ChinaSlow reaction kinetics and large volume change limit the application of cobalt phosphide (CoP) in supercapacitors. Defect engineering and surface coating are regarded as two effective strategies for them. Herein, nickel (Ni) doped CoP (Ni-CoP) nanowire arrays are vertically grown on the surface of activated carbon cloth, followed by zinc oxide (ZnO) coating via an atomic layer deposition method. Ni doping can optimize electron redistribution of CoP to promote its electron transport and generate more active sites. Coated ZnO can not only inhibit the volume change of Ni-CoP during cyclic charge and discharge processes, but also provide additional pseudocapacitance. Benefiting from the synergistic effect of the Ni doping and ZnO coating, the optimal Ni-CoP@ZnO-6 demonstrates a high specific capacity of 877 C g−1 at 1 A g−1 and capacity retention of 83.3% at 15 A g−1. Compared with Ni-CoP, the Ni-CoP@ZnO-6 shows an increased cyclic stability of 15.29% after 10,000 cycles. The assembled hybrid supercapacitor combining Ni-CoP@ZnO-6 with activated carbon has an energy density of 25.7 Wh kg−1 at 459.3 W kg−1, and 2 serially connected HSCs can power a light-emitting diode and timer. The work offers a novel strategy to promote the electrochemical performance of transition-metal compounds for supercapacitors.http://www.sciencedirect.com/science/article/pii/S2949821X25000894SupercapacitorsElectrochemical performanceCobalt phosphideNickel dopingZnO coating |
| spellingShingle | Shuting Jia Yangyang Luo Yuanjie Yi Huaming Qian Zhengkui Li Chunran Wang Yuhui Xu Gaini Zhang Huijuan Yang Guiqiang Cao Jingjing Wang Wenbin Li Xifei Li Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors Next Energy Supercapacitors Electrochemical performance Cobalt phosphide Nickel doping ZnO coating |
| title | Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors |
| title_full | Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors |
| title_fullStr | Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors |
| title_full_unstemmed | Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors |
| title_short | Modulating CoP nanowire arrays via ZnO-coating-boosted Ni doping for high-performance hybrid supercapacitors |
| title_sort | modulating cop nanowire arrays via zno coating boosted ni doping for high performance hybrid supercapacitors |
| topic | Supercapacitors Electrochemical performance Cobalt phosphide Nickel doping ZnO coating |
| url | http://www.sciencedirect.com/science/article/pii/S2949821X25000894 |
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