A high energy and power density hybrid supercapacitor based on an advanced carbon-coated Li4Ti5O12 electrode
- A high energy and power density hybrid supercapacitor based on an advanced carbon-coated Li4Ti5O12 electrode
- 정훈기; Nulu Venugopal; Bruno Scrosati; 선양국
- Hybrid supercapacitor; Li4Ti5O12; Microsphere; High energy density; High power density
- Issue Date
- Journal of power sources
- VOL 221, 266-271
- We describe in this work the synthesis and the characterization of homogeneous, carbon-coated lithium titanium oxide micro spheres and demonstrate their use for the fabrication of an active negative electrode combined with a high surface area, activated carbon positive electrode to form an advanced non aqueous, hybrid supercapacitor. We show that this activated carbon/carbon coated-Li4Ti5O12 device retains 95% of its initial capacity after 1000 cycles with a maximum volumetric energy and power density of 57 Wh L−1 and 2600 W L−1, respectively. Due to this unique performance, the hybrid supercapacitor developed in this work is expected to be a very promising energy storage device suitable for applications that require high energy levels and fast charge and discharge cycles, such as those requested in the EV sector.
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