(Co, Mn)-Doped NiSe2-diethylenetriamine (dien) nanosheets and (Co, Mn, Sn)-doped NiSe2 nanowires for high performance supercapacitors: compositional/morphological evolution and (Co, Mn)-induced electron transfer

Nanoscale ◽  
2019 ◽  
Vol 11 (36) ◽  
pp. 16810-16827 ◽  
Author(s):  
Huamei Dan ◽  
Keyu Tao ◽  
Yang Hai ◽  
Li Liu ◽  
Yun Gong

A series of MSe2-dien (M = metal(ii) ion and dien = diethylenetriamine) were grown on Ni foam (NF) based on Co(ii)/Mn(ii) salts with different molar ratios.

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1718 ◽  
Author(s):  
Haifu Huang ◽  
Xiaoli Deng ◽  
Liqing Yan ◽  
Geng Wei ◽  
Wenzheng Zhou ◽  
...  

Herein, a facile one-step electrodeposition route was presented for preparing Ni3S2/NiS composite film on Ni foam substrate (denoted as NiSx/NF). The NiSx granular film is composed of mangy interconnected ultra-thin NiSx nanoflakes with porous structures. When applied as electrodes for supercapacitors, the ultra-thin nanoflakes can provide more active sites for redox reaction, and the interconnected porous structure has an advantage for electrolyte ions to penetrate into the inner space of active materials quickly. As expected, the obtained NiSx/NF sample exhibited high gravimetric capacitance of 1649.8 F·g−1 and areal capacitance of 2.63 F·cm−2. Furthermore, a gravimetric capacitance of 1120.1 F·g−1 can be maintained at a high current density of 20 mA·cm−2, suggesting a good rate capability. The influence of the different molar ratios of electrodeposition electrolyte (NiNO3 and thiourea) on the morphology and electrochemical properties of NiSx/NF sample was investigated to provide an optimum route for one-step electrodeposition of Ni3S2/NiS composite film. The outstanding performance indicated the Ni3S2/NiS composite film on Ni foam has great potential as an electrode material for supercapacitors.


Author(s):  
Mutawara Mahmood Baig ◽  
Muhammad Taqi Mehran ◽  
Ramsha Khan ◽  
Khalid Mehmood ◽  
Salman Raza Naqvi ◽  
...  

2021 ◽  
Vol 4 (2) ◽  
pp. 1619-1627
Author(s):  
Min Kang ◽  
Hai Zhou ◽  
Pushan Wen ◽  
Ning Zhao

2021 ◽  
Author(s):  
Mingming Su ◽  
Yajing Hu ◽  
Ao Yu ◽  
Zhiyao Peng ◽  
Wangtao Long ◽  
...  

Broadband photodetectors fabricated with organic molecules have the advantages of low cost, high flexibility, easy processing and low-temperature requirement. Fullerene molecules, due to the electron acceptor and photoinduced electron transfer...


2021 ◽  
Author(s):  
Arunpandiyan Surulinathan ◽  
Raja Annamalai ◽  
Vinoth S ◽  
Alagarsamy Pandikumar ◽  
Ayyaswamy Arivarasan

Developing high-performance, robust, and economic supercapacitor is a promising path to the future electric vehicle’s technology. Herein, a hierarchically porous CeO2 micro rice was attached on the Ni foam surface...


2021 ◽  
Vol 43 ◽  
pp. 103155
Author(s):  
Bogale Abebe Mola ◽  
G. Mani ◽  
Sangaraju Sambasivam ◽  
Mohan Reddy Pallavolu ◽  
Ayman A. Ghfar ◽  
...  

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