Facile in situ growth of Ni/Co-LDH arrays by hypothermal chemical coprecipitation for all-solid-state asymmetric supercapacitors
文献类型：期刊论文
| 作者 | Li, Tie(李铁); Li, Rui; Luo, Hui(罗袆) |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2016 |
| 卷号 | 4期号:48 |
| 通讯作者 | Li, Tie(李铁) |
| 英文摘要 | Nowadays, there are challenges facing high-performance electrode materials that are still obstructing their practical application in a new class of all-solid-state asymmetric supercapacitors (AASs) for the development of future portable energy-storage devices. Among various methods, the development of an effective synthesis methodology that could give a high-quality outcome using special synergetic construction and enhancement of adhesion between the collector substrate and active material is a feasible strategy to solving the above bottleneck problem. Hence, in this paper we reported a universal, facile and low cost self-assembly strategy to fabricate binder-free Ni/Co-LDH array materials in situ on different substrates (typically: Ni foam, Cu foil, fabric, and CNT/rGO film) using a hypothermal chemical coprecipitation strategy under low temperature (55 degrees C) and normal pressure reaction conditions. The resulting Ni/Co-LDH array materials' growth on each substrate displayed a special three-dimensional hierarchical structure with a well-defined nanosheet interconnected network configuration, which provides a generality and versatility to this synthetic method that is applicable to large-scale production. Significantly, electrochemical characterization reveals that the binder-free Ni/Co-LDH array electrode materials all exhibit a high specific capacitance over 2380 F g(-1) (1 A g(-1)) regardless of the in situ substrate material, and excellent cycling stability (105.7% remained after 2700 cycles). The design and fabrication of AASs are also demonstrated by exploiting this binder-free LDH array as the positive electrode material, which has a high energy density (141.03 W h kg(-1)) and power density (1.17 kW kg(-1)). These results have greatly exceeded that of previously reported nickel or cobalt oxide/hydroxide based AASs and other typical AASs, such as those based on NiCo2O4, Mn3O4, and CoMoO4. Remarkably, with cycling up to 1000 times under a high scan rate of 100 mV s(-1), the AASs still retain over 89.6% of their initial capacitance values. |
| 关键词[WOS] | HIGH-ENERGY DENSITY ; FLEXIBLE SUPERCAPACITORS ; HYDROXIDE NANOSHEETS ; NI FOAM ; NICKEL ; COMPOSITES ; GRAPHENE ; ELECTRODES ; NANORODS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000390433700031 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/4802]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米研究国际实验室_张珽团队 |
| 推荐引用方式 GB/T 7714 | Li, Tie,Li, Rui,Luo, Hui. Facile in situ growth of Ni/Co-LDH arrays by hypothermal chemical coprecipitation for all-solid-state asymmetric supercapacitors[J]. JOURNAL OF MATERIALS CHEMISTRY A,2016,4(48). |
| APA | Li, Tie,Li, Rui,&Luo, Hui.(2016).Facile in situ growth of Ni/Co-LDH arrays by hypothermal chemical coprecipitation for all-solid-state asymmetric supercapacitors.JOURNAL OF MATERIALS CHEMISTRY A,4(48). |
| MLA | Li, Tie,et al."Facile in situ growth of Ni/Co-LDH arrays by hypothermal chemical coprecipitation for all-solid-state asymmetric supercapacitors".JOURNAL OF MATERIALS CHEMISTRY A 4.48(2016). |
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