A new design of an electrochromic energy storage device with high capacity, long cycle lifetime and multicolor display

2020 ◽  
Vol 8 (33) ◽  
pp. 17098-17105 ◽  
Author(s):  
Ling Wang ◽  
Mingrui Guo ◽  
Jing Zhan ◽  
Xiuling Jiao ◽  
Dairong Chen ◽  
...  

A new design of the electrochromic energy storage (EES) device with high capacity, long-term stability and multicolor display is proposed with high potential for practical applications.

2019 ◽  
Vol 9 (16) ◽  
pp. 1803865 ◽  
Author(s):  
Nanzhong Wu ◽  
Wenjiao Yao ◽  
Xiaohe Song ◽  
Ge Zhang ◽  
Bingjie Chen ◽  
...  

2016 ◽  
Vol 211 ◽  
pp. 44-51 ◽  
Author(s):  
Yuqiong Mao ◽  
Taotao Li ◽  
Chunli Guo ◽  
Fuchun Zhu ◽  
Chunchen Zhang ◽  
...  

2020 ◽  
Author(s):  
Yu Qiao ◽  
Han Deng ◽  
Zhi Chang ◽  
Xin Cao ◽  
Huijun Yang ◽  
...  

Abstract As a promising low-cost energy storage device, the development of rechargeable potassium-ion battery (KIB) is severely hindered by the limited capacity of cathode candidates. Regarded as an attractive capacity-boosting strategy, triggering the O-related anionic redox activity has not been achieved within sealed KIB system. Herein, different from the typical gaseous open K-O2 battery (O2/KO2 redox), we originally realize the reversible superoxide/peroxide (KO2/K2O2) interconversion on a KO2-based cathode. Controlled within a sealed cell environment, the irreversible O2 evolution and electrolyte decomposition (induced by superoxide anion (O2−) formation) are effectively restrained. Rationally controlling the reversible depth-of-charge at 300 mAh/g (based on the mass of KO2), no obvious cell degradation can be observed during 900 cycles. Moreover, benefit from electrolyte modification, KO2-based cathode is coupled with limited amount of K-metal anode (merely 2.5 times excess), harvesting a K-metal full-cell with high-energy-efficiency (∼90%) and long-term cycling stability (over 300 cycles).


RSC Advances ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 201-207 ◽  
Author(s):  
Jun Seop Lee ◽  
Jaemoon Jun ◽  
Sunghun Cho ◽  
Wooyoung Kim ◽  
Jyongsik Jang

Highly porous carbon nanotubes are synthesized using dual-nozzle co-electrospinning of three polymer solutions and following heat treatment to apply energy storage device.


2009 ◽  
Vol 66 (7) ◽  
pp. 259-265 ◽  
Author(s):  
Masamitsu TACHIBANA ◽  
Yasuhiro TSUKADA ◽  
Takahiro OHISHI ◽  
Hideo YAMAGISHI ◽  
Mutsuaki MURAKAMI

2016 ◽  
Vol 40 (9) ◽  
pp. 7456-7464 ◽  
Author(s):  
Ramya Ramkumar ◽  
Manickam Minakshi Sundaram

An effective cross-linking strategy for grafting polyaniline with a nanomaterial such as nickel molybdate provides long term cyclability for the fabricated energy storage device.


Author(s):  
Rouwei Yan ◽  
Biao Xu ◽  
K. P. Annamalai ◽  
Tianlu Chen ◽  
Zhiming Nie ◽  
...  

Background : Renewable energies are in great demand because of the shortage of traditional fossil energy and the associated environmental problems. Ni and Se-based materials are recently studied for energy storage and conversion owing to their reasonable conductivities and enriched redox activities as well as abundance. However, their electrochemical performance is still unsatisfactory for practical applications. Objective: To enhance the capacitance storage of Ni-Se materials via modification of their physiochemical properties with Fe. Methods: A two-step method was carried out to prepare FeNi-Se loaded reduced graphene oxide (FeNi-Se/rGO). In the first step, metal salts and graphene oxide (GO) were mixed under basic condition and autoclaved to obtain hydroxide intermediates. As a second step, selenization process was carried out to acquire FeNi-Se/rGO composites. Results: X-ray diffraction measurements (XRD), nitrogen adsorption at 77K, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were carried out to study the structures, porosities and the morphologies of the composites. Electrochemical measurements revealed that FeNi-Se/rGO notably enhanced capacitance than the NiSe/G composite. This enhanced performance was mainly attributed to the positive synergistic effects of Fe and Ni in the composites, which not only had influence on the conductivity of the composite but also enhanced redox reactions at different current densities. Conclusion: NiFe-Se/rGO nanocomposites were synthesized in a facile way. The samples were characterized physicochemically and electrochemically. NiFeSe/rGO giving much higher capacitance storage than the NiSe/rGO explained that the nanocomposites could be an electrode material for energy storage device applications.


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