Rational design of yolk-shell CoFe2O4 nanospheres towards enhanced lithium storage performance.
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| Title: | Rational design of yolk-shell CoFe |
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| Authors: | Meng, Xiaoman1 (AUTHOR), Chen, Shiqi2 (AUTHOR), Wang, Jinkai1 (AUTHOR) happy_lifewjk@163.com, Wang, Shuoyu2 (AUTHOR), Liu, Zhi1 (AUTHOR), Wang, Zhengdong1 (AUTHOR) 804034945@qq.com |
| Source: | Journal of Materials Science: Materials in Electronics. Apr2024, Vol. 35 Issue 11, p1-9. 9p. |
| Subjects: | Laminated metals, Hybrid electric vehicles, Energy storage, Renewable energy sources, Storage, Ion-permeable membranes |
| Abstract: | Co–Fe bimetal oxides have attracted increasing attention owing to their high theoretical capacity and multiple electrochemically active sites for lithium-ion battery which widely applied in electric/hybrid electric vehicles and renewable energy storage. However, Co–Fe bimetal oxides still suffer from the inherently poor conductivity and severe volume change upon lithiation/delithiation process, thus resulting in poor cycle stability. Herein, the yolk-shell CoFe2O4 nanospheres were prepared by a solvothermal method and subsequent calcination strategy. The phase and morphology can affect the electrochemical storage performance by adjusting the annealing temperature. Benefiting from the unique structure, the yolk-shell CoFe2O4 electrode displayed improved lithium storage performance and excellent rate capability, delivering a reversible capacity of ~ 912.7 mAh g−1 at 200 mA g−1 and 694.3 mAh g−1 at even a high current density of 1000 mA g−1. More importantly, this novel strategy can be commonly used to design various other bimetal oxides with novel nanostructures, which is promising for developing advanced electrodes for high-performance energy storage devices. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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