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| Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors | |
| Yan, Yu1; Li, Anran2; Lu, Chengxing1; Zhai, Tengfei1; Lu, Shanfu3; Li, Weiman4; Zhou, Wei1 | |
| 2020-09-15 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 396Pages:11 |
| Abstract | It requires excellent conductivity, rapid diffusion of electrolyte and high active specific area of active materials to achieve efficient supercapacitor. Herein, the novel NiCo2S4-Ni9S8-C double-layered yolk-shell microspheres (NiCo2S4Ni9S8-C DYMs) were synthesized by using bimetallic metal-organic framework (MOF) as self-template. The microspheres are composed of numerous tiny heterogeneous NiCo2S4-Ni9S8 nanoparticles (similar to 10 nm in size) decorated in amorphous carbon. As expected, the sample exhibits high specific capacity of 293.6 mAh g(-1) at 1 A g(-1), excellent rate capacity (81.1% from 1 A g(-1) to 20 A g(-1)) and good cycling stability (capacity retention of 87.3% over 5000 cycles). The hybrid supercapacitor assembled by NiCo2S4-Ni9S8-C DYMs and grapheme hydrogel, shows an energy density of 51 Wh kg(-1) at a power density of 1399.4 W kg(-1) and even can retain 32.5 Wh kg(-1) at 8004.4 W kg(-1). The density functional theory (DFT) calculation show the hetero-interfaces of NiCo2S4-Ni9S8 can optimize the electronic distribution, coupled with the excellent electroconductivity of dispersed carbon within microspheres, which boost the electrochemical performance. This work provides an approach to fabricate heterogeneous microspheres by MOF route for developing advanced battery-type electrode materials. |
| Keyword | Metal-organic framework Double-layered yolk-shell microspheres NiCo2S4-Ni9S8-C hetero-interfaces Battery-type electrode Hybrid supercapacitor |
| DOI | 10.1016/j.cej.2020.125316 |
| Language | 英语 |
| WOS Keyword | ULTRATHIN NANOSHEETS ; TEMPLATE SYNTHESIS ; HOLLOW SPHERES ; PERFORMANCE ; CARBON ; STORAGE ; ENERGY ; ARRAYS |
| Funding Project | National Natural Science Foundation of China[51622204] ; National Natural Science Foundation of China[51972011] ; National Natural Science Foundation of China[51902012] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China |
| WOS ID | WOS:000551969200120 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/41479 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhou, Wei |
| Affiliation | 1.Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China 2.Beihang Univ, Beijing Adv Innovat Ctr Big Data Based Precis Med, Beijing 100191, Peoples R China 3.Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Yan, Yu,Li, Anran,Lu, Chengxing,et al. Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors[J]. CHEMICAL ENGINEERING JOURNAL,2020,396:11. |
| APA | Yan, Yu.,Li, Anran.,Lu, Chengxing.,Zhai, Tengfei.,Lu, Shanfu.,...&Zhou, Wei.(2020).Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors.CHEMICAL ENGINEERING JOURNAL,396,11. |
| MLA | Yan, Yu,et al."Double-layered yolk-shell microspheres with NiCo2S4-Ni9S8-C hetero-interfaces as advanced battery-type electrode for hybrid supercapacitors".CHEMICAL ENGINEERING JOURNAL 396(2020):11. |
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