Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors
Copper oxide has aroused great concern in energy storage fields due to its properties of high theoretical capacitance, low cost and mild toxicity. However, its wide application still remains challenges owing to its poor electrical conductivity and unstable cycling life. Binder-free foam electrodes p...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-01-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847820302185 |
| _version_ | 1797760364404801536 |
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| author | Hui Jiang Xuehua Yan Jieyu Miao Mingyu You Yihan Zhu Jianmei Pan Le Wang Xiaonong Cheng |
| author_facet | Hui Jiang Xuehua Yan Jieyu Miao Mingyu You Yihan Zhu Jianmei Pan Le Wang Xiaonong Cheng |
| author_sort | Hui Jiang |
| collection | DOAJ |
| description | Copper oxide has aroused great concern in energy storage fields due to its properties of high theoretical capacitance, low cost and mild toxicity. However, its wide application still remains challenges owing to its poor electrical conductivity and unstable cycling life. Binder-free foam electrodes possess abundant porous structures and high specific surface area, which could get good contact with electrolyte. Herein, we demonstrate Ag nanoparticles decorated CuxO nanowires grown spontaneously on copper foam (CF) electrode for asymmetric supercapacitor. The skeleton structure of CF provides large amounts of active sites for the growth of CuxO nanowires. Moreover, Ag nanoparticles further decrease the internal resistance and enhance the electrochemical performance. Ag/CuxO/CF-40 electrode presents a high area specific capacitance of 1192 mF cm−2 at 2 mA cm−2 and the influence of surface capacitance-dominated process and diffusion-controlled process are discussed in detail. Besides, the energy density of the as-prepared asymmetric supercapacitor (ASC) reaches 46.32 μWh cm−2 at a power density of 3.00 mW cm−2. A 2V LED is lighted successfully by two ASC in series. This work provides a new strategy to prepare low internal resistance and binder-free flexible Ag/CuxO/CF electrode, which demonstrates a good potential application in flexible supercapacitors or other wearable electronic devices. |
| first_indexed | 2024-03-12T18:57:33Z |
| format | Article |
| id | doaj.art-92584a279bd34395b6d8f02a53205acc |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T18:57:33Z |
| publishDate | 2021-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-92584a279bd34395b6d8f02a53205acc2023-08-02T06:47:06ZengElsevierJournal of Materiomics2352-84782021-01-0171156165Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitorsHui Jiang0Xuehua Yan1Jieyu Miao2Mingyu You3Yihan Zhu4Jianmei Pan5Le Wang6Xiaonong Cheng7School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, China; Institute for Advanced Materials, Jiangsu University, Zhenjiang, 212013, Jiangsu, China; Institute of Green Materials and Metallurgy, Jiangsu University, Zhenjiang, 212013, Jiangsu, China; Corresponding author. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China.School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, ChinaCopper oxide has aroused great concern in energy storage fields due to its properties of high theoretical capacitance, low cost and mild toxicity. However, its wide application still remains challenges owing to its poor electrical conductivity and unstable cycling life. Binder-free foam electrodes possess abundant porous structures and high specific surface area, which could get good contact with electrolyte. Herein, we demonstrate Ag nanoparticles decorated CuxO nanowires grown spontaneously on copper foam (CF) electrode for asymmetric supercapacitor. The skeleton structure of CF provides large amounts of active sites for the growth of CuxO nanowires. Moreover, Ag nanoparticles further decrease the internal resistance and enhance the electrochemical performance. Ag/CuxO/CF-40 electrode presents a high area specific capacitance of 1192 mF cm−2 at 2 mA cm−2 and the influence of surface capacitance-dominated process and diffusion-controlled process are discussed in detail. Besides, the energy density of the as-prepared asymmetric supercapacitor (ASC) reaches 46.32 μWh cm−2 at a power density of 3.00 mW cm−2. A 2V LED is lighted successfully by two ASC in series. This work provides a new strategy to prepare low internal resistance and binder-free flexible Ag/CuxO/CF electrode, which demonstrates a good potential application in flexible supercapacitors or other wearable electronic devices.http://www.sciencedirect.com/science/article/pii/S2352847820302185Binder-free electrodeCuxO nanowire arraysCu foamPseudocapacitance contributionAsymmetric supercapacitor |
| spellingShingle | Hui Jiang Xuehua Yan Jieyu Miao Mingyu You Yihan Zhu Jianmei Pan Le Wang Xiaonong Cheng Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors Journal of Materiomics Binder-free electrode CuxO nanowire arrays Cu foam Pseudocapacitance contribution Asymmetric supercapacitor |
| title | Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors |
| title_full | Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors |
| title_fullStr | Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors |
| title_full_unstemmed | Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors |
| title_short | Super-conductive silver nanoparticles functioned three-dimensional CuxO foams as a high-pseudocapacitive electrode for flexible asymmetric supercapacitors |
| title_sort | super conductive silver nanoparticles functioned three dimensional cuxo foams as a high pseudocapacitive electrode for flexible asymmetric supercapacitors |
| topic | Binder-free electrode CuxO nanowire arrays Cu foam Pseudocapacitance contribution Asymmetric supercapacitor |
| url | http://www.sciencedirect.com/science/article/pii/S2352847820302185 |
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