| Facilely prepared nickel-manganese layered double hydroxide-supported manganese dioxide on nickel foam for aqueous asymmetric supercapacitors with high performance | |
| Emin, Adil; Li, Junshuai; Dong, Yunxia; Fu, Yujun; He, Deyan; Li, Yali | |
| 2023-08-15 | |
| Source Publication | Journal of Energy Storage Impact Factor & Quartile |
| ISSN | 2352-152X |
| Volume | 65 |
| Abstract | In order to achieve high-performance and long-lifespan supercapacitors, highly electrochemically active mate-rials and rational structural design of are highly desirable. Herein, a hierarchical electrode structure of nickel (Ni)-manganese (Mn) layered double hydroxide (NiMn-LDH)-supported manganese dioxide (MnO2), i.e., NiMn-LDH@MnO2, assembled by NiMn-LDH nanoparticles and MnO2 nanosheets was developed on nickel foam by facile electrodeposition and the subsequent hydrothermal reaction. The optimized NiMn-LDH@MnO2 electrode shows a high capacitance (-4336.8 F g-1 at 1.0 A g-1), good rate performance (-860 F g-1 at 60 A g-1) and long cycle stability (-83.2 % initial capacitance retention after 10,000 cycles at 20 A g-1). Furthermore, the aqueous asymmetric supercapacitors using the optimized NiMn-LDH@MnO2 cathode and activated carbon anode demonstrate a desirable energy density of-104.51 W h kg-1 at 800.00 W kg-1, and good cycle stability with 86.8 % initial capacitance retention and about 100 % Coulomb efficiency after 22,000 cycles at 5.0 A g-1. The above results indicate that this study offers a meaningful exploration for manufacturing the energy storage devices with high comprehensive performance. |
| Keyword | NiMn-LDH@MnO2 Aqueous supercapacitors High energy density Long cycle stability |
| Publisher | ELSEVIER |
| DOI | 10.1016/j.est.2023.107340 |
| Indexed By | SCIE |
| Language | 英语 |
| WOS Research Area | Energy & Fuels |
| WOS Subject | Energy & Fuels |
| WOS ID | WOS:000980731800001 |
| Original Document Type | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/501380 |
| Collection | 兰州大学 |
| Corresponding Author | Li, Junshuai; Li, Yali |
| Affiliation | Lanzhou Univ, LONGi Inst Future Technol, Sch Mat & Energy, 222 South Tianshui Rd, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Emin, Adil,Li, Junshuai,Dong, Yunxia,et al. Facilely prepared nickel-manganese layered double hydroxide-supported manganese dioxide on nickel foam for aqueous asymmetric supercapacitors with high performance[J]. Journal of Energy Storage,2023,65. |
| APA | Emin, Adil,Li, Junshuai,Dong, Yunxia,Fu, Yujun,He, Deyan,&Li, Yali.(2023).Facilely prepared nickel-manganese layered double hydroxide-supported manganese dioxide on nickel foam for aqueous asymmetric supercapacitors with high performance.Journal of Energy Storage,65. |
| MLA | Emin, Adil,et al."Facilely prepared nickel-manganese layered double hydroxide-supported manganese dioxide on nickel foam for aqueous asymmetric supercapacitors with high performance".Journal of Energy Storage 65(2023). |
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