期刊
SYNTHETIC METALS
卷 271, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2020.116629
关键词
MWCNT/Fe2O3; PVA-LiCl gel electrolyte; Solid-state symmetric supercapacitor
资金
- SERB project, Government of India [CRG/2020/000103]
Researchers have designed a prototype solid-state symmetric supercapacitor (SSS) device with excellent specific capacitance, energy and power properties. The device demonstrates stable cycle repeatability and opens up new possibilities for electrochemical energy storage.
Prototype solid-state symmetric supercapacitor (SSS) device has been designed by using two MWCNT/Fe2O3 electrodes assembled through polyvinyl alcohol-lithium chloride gel electrolyte as mediator onto flexible stainless steel substrate. Through electrochemical investigation as-fabricated device demonstrated 70.16 F g(-1) of specific capacitance with remarkable 9.74 W h kg(-1) specific energy and 487 W kg(-1) specific power at current density of 0.57 A g(-1). Assembled device delivers an outstanding volumetric energy of 24.36 mW h cm(-3) compensating volumetric power of 1218 mW cm(-3) at a current density of 1.42 mA cm(-3). The cycle repeatability test of MWCNTs/Fe2O3 SSS device exhibited capacitance retention of 75% for 1500 cycles.
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