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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Yawen Fu, Dan Zhang, Xugang Qiu, Shen Qin, Chuanli |
| Copyright Year | 2016 |
| Abstract | LiFePO$_{4}$/expanded graphite (LFP/EG) composites were prepared by in situ sol–gel synthesis method. Li-ion capacitors (LICs) using LiNO$_{3}$ aqueous electrolyte were assembled with LFP/EG composites as the positive electrode and active carbon as the negative electrode in order to study the possibility of LFP/EG composites as the positive electrode material for LIC application in aqueous neutral electrolyte. The results show quasi spherical LFP particles were homogeneously wrapped by EG film and embedded into EG sheets, which can form an effective 3D conductive network to improve conductivity and electrochemical performances of LFP/EG composites. Compared with LFP (93.41 F g$^{−1}$), the optimized LFP/EG composite exhibits C $_{ pe }$ of 326.23 F g$^{−1}$ at the scanning rate of 5 mV s$^{−1}$. The optimized LIC exhibits the highest C $_{ ps }$ of 53.31 F g$^{−1}$ at the current density of 200 mA g$^{−1}$. The LFP/EG composite and Li-ion capacitor maintains 84.8 % and 84.6 % of the initial specific capacitance after 100 cycles, respectively. |
| Starting Page | 4417 |
| Ending Page | 4425 |
| Page Count | 9 |
| File Format | |
| ISSN | 09574522 |
| Journal | Journal of Materials Science: Materials in Electronics |
| Volume Number | 27 |
| Issue Number | 5 |
| e-ISSN | 1573482X |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-01-13 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Optical and Electronic Materials Characterization and Evaluation of Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering |
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