3D in-situ hollow carbon fiber/carbon nanosheet/Fe3C@Fe3O4 by solventless one-step synthesis and its superior supercapacitor performance

2017 ◽  
Vol 252 ◽  
pp. 215-225 ◽  
Author(s):  
Jaechul Ju ◽  
Minjae Kim ◽  
Seokhoon Jang ◽  
Yeongseon Kim ◽  
Yongheum Choi ◽  
...  
2016 ◽  
Vol 4 (33) ◽  
pp. 12929-12939 ◽  
Author(s):  
Xiaobing Wang ◽  
Jin Hao ◽  
Yichang Su ◽  
Fanggang Liu ◽  
Jian An ◽  
...  

Multi-layer NixZn1−xS/Ni foam composites were synthesized by a one-step hydrothermal reaction generating in situ growth on the Ni foam. The doping of Zn into the NixZn1−xS/Ni composite constructs the multi-layer nanostructure. The as-fabricated Ni1−xZnxS/Ni foam-2 h supercapacitor electrode shows outstanding rate properties.


2011 ◽  
Vol 14 (2) ◽  
pp. A19 ◽  
Author(s):  
Hong-Ming Yu ◽  
Xiao-Bo Teng ◽  
Jian Xie ◽  
Gao-Shao Cao ◽  
Xin-Bing Zhao
Keyword(s):  

2019 ◽  
Vol 7 (18) ◽  
pp. 11044-11052 ◽  
Author(s):  
Yadong Liu ◽  
Guoqiang Liu ◽  
Xiong Nie ◽  
Anqiang Pan ◽  
Shuquan Liang ◽  
...  

Ni3S2–Cu1.8S nanosheets were fabricated by a one-step co-sulfurization with in situ ion exchange, demonstrating potential applications in hybrid supercapacitors.


RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70704-70714 ◽  
Author(s):  
Nan Li ◽  
Zuoqiang Wu ◽  
Lei Huo ◽  
Lishuai Zong ◽  
Yujie Guo ◽  
...  

In the present study, we developed a novel approach to introduce amino group (–NH2), hydroxyl group (–OH) and sulfhydryl group (–SH) onto carbon fibers (CFs) using aromatic diazonium salts.


2021 ◽  
Vol 202 ◽  
pp. 109535
Author(s):  
Yadong Wu ◽  
Xiuyan Cheng ◽  
Shaoyun Chen ◽  
Bo Qu ◽  
Rui Wang ◽  
...  

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 783
Author(s):  
Ying Duan ◽  
Chen Wang ◽  
Jian Hao ◽  
Yang Jiao ◽  
Yanchao Xu ◽  
...  

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.


2021 ◽  
pp. 2100122
Author(s):  
Xidong Suo ◽  
Jie Yang ◽  
Yanrong Zhang ◽  
Yuting Hao ◽  
Jiahui Yang ◽  
...  

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Gopal Krishna Gupta ◽  
Pinky Sagar ◽  
Sumit Kumar Pandey ◽  
Monika Srivastava ◽  
A. K. Singh ◽  
...  

AbstractHerein, we demonstrate the fabrication of highly capacitive activated carbon (AC) using a bio-waste Kusha grass (Desmostachya bipinnata), by employing a chemical process followed by activation through KOH. The as-synthesized few-layered activated carbon has been confirmed through X-ray powder diffraction, transmission electron microscopy, and Raman spectroscopy techniques. The chemical environment of the as-prepared sample has been accessed through FTIR and UV–visible spectroscopy. The surface area and porosity of the as-synthesized material have been accessed through the Brunauer–Emmett–Teller method. All the electrochemical measurements have been performed through cyclic voltammetry and galvanometric charging/discharging (GCD) method, but primarily, we focus on GCD due to the accuracy of the technique. Moreover, the as-synthesized AC material shows a maximum specific capacitance as 218 F g−1 in the potential window ranging from − 0.35 to + 0.45 V. Also, the AC exhibits an excellent energy density of ~ 19.3 Wh kg−1 and power density of ~ 277.92 W kg−1, respectively, in the same operating potential window. It has also shown very good capacitance retention capability even after 5000th cycles. The fabricated supercapacitor shows a good energy density and power density, respectively, and good retention in capacitance at remarkably higher charging/discharging rates with excellent cycling stability. Henceforth, bio-waste Kusha grass-derived activated carbon (DP-AC) shows good promise and can be applied in supercapacitor applications due to its outstanding electrochemical properties. Herein, we envision that our results illustrate a simple and innovative approach to synthesize a bio-waste Kusha grass-derived activated carbon (DP-AC) as an emerging supercapacitor electrode material and widen its practical application in electrochemical energy storage fields.


Author(s):  
Alejandra M. Ortiz-Morales ◽  
Imad Hanhan ◽  
Jose Javier Solano ◽  
Michael D. Sangid

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