(Energy Technology Division Graduate Student Award) All-Graphene Energy Storage Device for High Energy and Power Density

2017 ◽  
Vol 5 (7) ◽  
pp. 3274-3283 ◽  
Author(s):  
Panpan Li ◽  
Zhaoyu Jin ◽  
Dan Xiao

A flexible Ni/Fe hybrid energy storage device is proposed through etching a NiZn alloy and Fe coating in phytic acid solution at room temperature, simultaneously revealing high energy and power density due to the combination of battery and capacitor properties.


2018 ◽  
Vol 383 ◽  
pp. 102-109 ◽  
Author(s):  
Ranjith Thangavel ◽  
Aravindaraj G. Kannan ◽  
Rubha Ponraj ◽  
Vigneysh Thangavel ◽  
Dong-Won Kim ◽  
...  

Nanoscale ◽  
2020 ◽  
Vol 12 (37) ◽  
pp. 19308-19316
Author(s):  
Xin He ◽  
Junyan Liu ◽  
Sirou Zhao ◽  
Yu Zhong ◽  
Bohua Chen ◽  
...  

We developed an Ag NW@Bi/Al 1D hierarchical nanostructure as a negative electrode for flexible and transparent energy storage device (FTESD), which endows high transparency, improved energy/power density and electrochemical stability.


2017 ◽  
Vol 41 (17) ◽  
pp. 9024-9032 ◽  
Author(s):  
Enke Feng ◽  
Hui Peng ◽  
Zhiguo Zhang ◽  
Jindan Li ◽  
Ziqiang Lei

As-fabricated foldable solid-state supercapacitors are suitable for highly fold-tolerant high-energy-density energy storage device applications.


2018 ◽  
Vol 6 (42) ◽  
pp. 21225-21230 ◽  
Author(s):  
Hassina Tabassum ◽  
Chong Qu ◽  
Kunting Cai ◽  
Waseem Aftab ◽  
Zibin Liang ◽  
...  

The BCN nanotubes have been fabricated on melamine foam (MF) derived three dimensional (3D) nitrogen doped carbon skeleton, which exhibited high energy and power density for the SSC and ASC devices.


2019 ◽  
Vol 89 (19-20) ◽  
pp. 4265-4271
Author(s):  
Wenqi Nie ◽  
Shu Zhang ◽  
Xin Ding ◽  
Jiyong Hu ◽  
Xudong Yang ◽  
...  

Cord-shaped stretchable supercapacitors have received much attention due to their high stretchability and three-dimensional flexibility. For coaxial supercapacitors, lower capacitive performance and the inextensibility of the separation layer have been the important factors hindering further developments. In this work, we developed an integration technology to fabricate multiple yarn-electrodes by a layer-to-layer braiding. Between the inner and outer electrodes there is a braided elastic separator by braiding multiple spandex yarns. The braided separator features not only a reliable separation of the inner and outer electrodes, but also a high stretchability and high porosity. The cord-shaped supercapacitor shows an excellent capacitive performance of 60.1 mF/cm2 with energy density of 5.4 μWh/cm2, power density of 0.52 mW/cm2 and extremely high capacitance retention of 99.8% under the strain of 100%, demonstrating the application value of this stretchable energy storage device.


2020 ◽  
Vol 15 (4) ◽  
pp. 498-503
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Dong Zhang ◽  
Yucai Li ◽  
Shiwei Song ◽  
...  

Rational design and construction of hybrid capacitor electrode materials with prominent energy and power density plays an indispensable role for its potential application in energy storage devices. In this work, the nanoflower-like NiCo2O4 samples are successfully prepared on Ni foam via a facile hydrothermal method. The as-fabricated NiCo2O4 samples exhibit superior electrochemical performance with a high specific capacitance of 444.4 F g–1 at 1 A g–1 and excellent capacitance retention. In addition, the as-fabricated device presents a high energy density of 0.298 mWh cm–3 at a power density of 5.71 mW cm–3 and excellent cycle stability with the capacitance retention of 75.6% after 10000 cycles, indicating a promising application as electrodes for energy storage device.


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