Co3O4 Nanosheets as Battery-Type Electrode for High-Energy Li-Ion Capacitors: A Sustained Li-Storage via Conversion Pathway
| العنوان: | Co3O4 Nanosheets as Battery-Type Electrode for High-Energy Li-Ion Capacitors: A Sustained Li-Storage via Conversion Pathway |
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| المؤلفون: | Vanchiappan Aravindan, Palanichamy Sennu, Srinivasan Madhavi, Yun-Sung Lee |
| المصدر: | ACS Nano. 14:10648-10654 |
| بيانات النشر: | American Chemical Society (ACS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Supercapacitor, Battery (electricity), Materials science, General Engineering, General Physics and Astronomy, 02 engineering and technology, Electrolyte, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, 0104 chemical sciences, law.invention, Capacitor, Chemical engineering, law, Electrode, medicine, General Materials Science, 0210 nano-technology, Mesoporous material, Activated carbon, medicine.drug |
| الوصف: | We report the excellent charge storage performance of high-energy Li-ion capacitors (LIC) fabricated from the mesoporous Co3O4 nanosheets as the conversion-type battery component and Jack fruit (Artocarpus heterophyllus) derived activated carbon as a supercapacitor electrode, especially at high temperatures (50 and 40 °C). Prior to the fabrication, the electrochemical prelithiation strategy was applied to Co3O4 to alleviate the irreversibility and enrich the Li-ions for electrochemical reactions (Co0 + Li2O). The LIC delivered a maximum energy density of ∼118 Wh kg-1 at a high temperature of 50 °C. The significant difference is observed at a high rate of 2.6 kW kg-1 at 50 °C with excellent cycle stability up to 3000 cycles, with a retention of ∼87% compared with the LIC cycled at room temperature (∼74%). The magnificent electrochemical performance clearly demonstrates that the mesoporous structure and residual carbon synergistically facilitated the Li+/electron transport and hinder undesirable side reactions with electrolytes to realize high-energy density at high temperatures. |
| تدمد: | 1936-086X 1936-0851 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::8ab769bd46af68a4360695d17871c329Test https://doi.org/10.1021/acsnano.0c04950Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........8ab769bd46af68a4360695d17871c329 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1936086X 19360851 |
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