A high-energy aqueous on-chip lithium-ion capacitor based on interdigital 3D carbon microelectrode arrays

JOURNAL OF POWER SOURCES

卷:455

Article

Adelowo, Ebenezer¹  Baboukani, Amin Rabiei¹  Okpowe, Omena¹  Khakpour, Iman¹  Safa, Meer¹  Chen, Chunhui¹  Wang, Chunlei¹ 

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

关键词: Lithium-ion capacitor;    On-chip;    Carbon microelectromechanical systems;    LiFePO4;   

DOI  :  10.1016/j.jpowsour.2020.227987

来源: Elsevier

【 摘 要 】

There is a growing interest in the development of high energy on-chip capacitive energy storage units for application in microelectronic devices. Lithium-ion capacitor (LIC) typically comprising battery-type and capacitor-type electrodes offer the opportunity for an improved energy density in capacitive energy storage. In this work, an aqueous on-chip LIC was fabricated using carbon microelectromechanical systems (C-MEMS) technique. Oxygen plasma-treated 3D carbon microelectrode arrays served as the capacitor-type electrode in the LIC, while LiFePO4 integrated on the 3D carbon microelectrode arrays was used as the battery-type cathode. Electrochemical performance evaluation shows that the aqueous on-chip LIC can deliver an areal density up to similar to 5.03 mu Wh cm(-2), which is similar to 5 times higher than the oxygen plasma-treated symmetric carbon microelectrode-based electrochemical capacitor.

【 授权许可】

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