کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
185402 | 459597 | 2014 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nanostructured porous MnO2 on Ni foam substrate with a high mass loading via a CV electrodeposition route for supercapacitor application Nanostructured porous MnO2 on Ni foam substrate with a high mass loading via a CV electrodeposition route for supercapacitor application](/preview/png/185402.png)
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• Nanostructured porous MnO2 film on Ni foam substrate was synthesized via a CV route for the first time.
• The obtained MnO2 film has a 3D network structure and a high mass loading.
• An asymmetry supercapacitor composed of MnO2 film (positive electrode) and active carbon (AC, negative electrode) was fabricated for the first time.
• An asymmetric supercapacitor of AC//MnO2 displayed a capacitance of 67 F g−1 and an energy density of 37.22 Wh Kg−1.
• The capacitance retention of 80% after 1000 cycles was reached for an asymmetric supercapacitor.
Nanostructured porous MnO2 film on Ni foam substrate was fabricated via a CV electrodeposited route for the first time. The obtained MnO2 film had a 3D network structure and a high mass loading from 6 to 18 mg cm−2. This material achieved a maximum specific capacitance of 2790 mF cm−2 at 2 mA cm−2 and 864 mF cm-2 at 20 mA cm−2, and the specific capacitance can be retained above 90% after 1000 cycles at 5 mA cm−2. The fabricated AC//MnO2 asymmetric supercapacitor can reach a specific capacitance of 67 F g−1 and an energy density of 37.22 Wh Kg−1 with its capacitance retention of 80% after 1000 cycles at 2.5 mA cm−2.
Nanostructured porous MnO2 films on Ni foam substrate were fabricated via a CV electrodeposited route for the first time and exhibited a maximum specific capacitance of 2790 mFcm−2 at 2 mA cm−2. An asymmetric supercapacitor of AC//MnO2 displayed a specific capacitance of 67 F g−1 and an energy density of 37.22 Wh Kg−1.Figure optionsDownload as PowerPoint slide
Journal: Electrochimica Acta - Volume 136, 1 August 2014, Pages 189–194