کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6470220 | 1424105 | 2017 | 14 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: High performance hybrid supercapacitor device based on cobalt manganese layered double hydroxide and activated carbon derived from cork (Quercus Suber) High performance hybrid supercapacitor device based on cobalt manganese layered double hydroxide and activated carbon derived from cork (Quercus Suber)](/preview/png/6470220.png)
- Thin Co-Mn LDH nanoflakes was synthesized by a facile solvothermal technique.
- AC was synthesized by a two-step eco-friendly hydrothermal synthesis.
- A device was fabricated using Co-Mn LDH as positive and AC as negative electrode.
- The electrode materials exhibited good electrochemical performance.
Thin Co-Mn layered double hydroxide (LDH) nanoflakes and Activated carbon (AC) from cork raw material (Quercus Suber) with highly porous structure and good textural properties was synthesized by a facile solvothermal and two-step eco-friendly hydrothermal syntheses routes respectively. A hybrid device was successfully fabricated using Co-Mn LDH as the positive electrode and AC as negative electrode. The device exhibited a high energy density of 20.3Â W h kgâ1 and corresponding power density of up to 435Â WÂ kgâ1 at 0.5Â AÂ gâ1 current density in 1Â M KOH aqueous electrolyte. The device also displayed a very high stability with 99.7% capacitance retention after 10,000 continuous charge-discharge cycles and negligible degradation after subsequently subjecting it to voltage holding test at its maximum operating voltage for 70Â hours. These results showcase the potential use of this hybrid device as possible electrodes for high energy density supercapacitor application.
225
Journal: Electrochimica Acta - Volume 252, 20 October 2017, Pages 41-54