Free-standing and highly conductive PEDOT nanowire films for high-performance all-solid-state supercapacitors

2019 ◽  
Vol 7 (3) ◽  
pp. 1323-1333 ◽  
Author(s):  
Dan Ni ◽  
Yuanxun Chen ◽  
Haijun Song ◽  
Congcong Liu ◽  
Xiaowei Yang ◽  
...  

Flexible solid-state supercapacitors based on free-standing PEDOT NW films with PVA–H2SO4–polydopamine robust gel films show high electrochemical performance.

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Jing Ning ◽  
Maoyang Xia ◽  
Dong Wang ◽  
Xin Feng ◽  
Hong Zhou ◽  
...  

Abstract Recent developments in the synthesis of graphene-based structures focus on continuous improvement of porous nanostructures, doping of thin films, and mechanisms for the construction of three-dimensional architectures. Herein, we synthesize creeper-like Ni3Si2/NiOOH/graphene nanostructures via low-pressure all-solid melting-reconstruction chemical vapor deposition. In a carbon-rich atmosphere, high-energy atoms bombard the Ni and Si surface, and reduce the free energy in the thermodynamic equilibrium of solid Ni–Si particles, considerably catalyzing the growth of Ni–Si nanocrystals. By controlling the carbon source content, a Ni3Si2 single crystal with high crystallinity and good homogeneity is stably synthesized. Electrochemical measurements indicate that the nanostructures exhibit an ultrahigh specific capacity of 835.3 C g−1 (1193.28 F g−1) at 1 A g−1; when integrated as an all-solid-state supercapacitor, it provides a remarkable energy density as high as 25.9 Wh kg−1 at 750 W kg−1, which can be attributed to the free-standing Ni3Si2/graphene skeleton providing a large specific area and NiOOH inhibits insulation on the electrode surface in an alkaline solution, thereby accelerating the electron exchange rate. The growth of the high-performance composite nanostructure is simple and controllable, enabling the large-scale production and application of microenergy storage devices.


2018 ◽  
Vol 47 (8) ◽  
pp. 2711-2718 ◽  
Author(s):  
Zhaohui Meng ◽  
Song Wang ◽  
Lijuan Wang ◽  
Hongjiang Hou

LZTO@C–N with an excellent electrochemical performance has been synthesized using NTA as C and N sources, as well as a chelating agent.


2019 ◽  
Vol 7 (16) ◽  
pp. 9716-9725 ◽  
Author(s):  
Yuan Tian ◽  
Yongling An ◽  
Shenglin Xiong ◽  
Jinkui Feng ◽  
Yitai Qian

Flexible and free-standing MXene@Sb paper was fabricated via a general electrodeposition technique, and, in the form of anodes for potassium-ion batteries, it delivered enhanced electrochemical performance.


2015 ◽  
Vol 3 (21) ◽  
pp. 11199-11202 ◽  
Author(s):  
Ning Lin ◽  
Liangbiao Wang ◽  
Jianbin Zhou ◽  
Jie Zhou ◽  
Ying Han ◽  
...  

High-performance Si/Ge anodes are prepared through a one-step solid-state metathesis reaction between Mg2Si and GeO2 for the first time.


2018 ◽  
Vol 6 (4) ◽  
pp. 1574-1581 ◽  
Author(s):  
Xiaoxin Ma ◽  
Long Chen ◽  
Xiaohua Ren ◽  
Guangmei Hou ◽  
Lina Chen ◽  
...  

A novel flexible P/carbon nanofibers@graphene electrode, which exhibits an excellent electrochemical performance, is fabricated via a vapor-redistribution and electrospinning method.


2016 ◽  
Vol 4 (27) ◽  
pp. 10493-10499 ◽  
Author(s):  
Tao Cheng ◽  
Yi-Zhou Zhang ◽  
Jian-Dong Zhang ◽  
Wen-Yong Lai ◽  
Wei Huang

High-performance free-standing PEDOT:PSS electrodes were fabricated via a facile multilayer spin-coating methodology; flexible and transparent all-solid-state supercapacitors were thus successfully constructed.


RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13315-13323 ◽  
Author(s):  
Junhua Kong ◽  
Xiayin Yao ◽  
Yuefan Wei ◽  
Chenyang Zhao ◽  
Jia Ming Ang ◽  
...  

Highly mesoporous free-standing carbon nanofibers (PNFs) with adjustable surface are successfully fabricated. ZnFe2O4 nanoneedles are strikingly formed and hosted by the PNFs to achieve excellent electrochemical performance.


RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 40018-40025 ◽  
Author(s):  
Zailei Zhang ◽  
Qiangqiang Tan ◽  
Ziyi Zhong ◽  
Fabing Su

The obtained binder-free and flexible free-standing Ni0.5Mn0.5Fe2O4/oxidized graphene (NMFO/OGP) and NMFO/OGP coated on polypropylene microporous film exhibited good electrochemical performance.


2018 ◽  
Vol 6 (40) ◽  
pp. 19488-19494 ◽  
Author(s):  
Qiang Chen ◽  
Jiantao Li ◽  
Cong Liao ◽  
Guangwu Hu ◽  
Yulu Fu ◽  
...  

The quasi-solid-state NF@NiO//Zn batteries can successfully power a neon sign consisting of 42 light emission diodes (LEDs).


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