scholarly journals Free-Standing Porous Carbon Nanofiber Networks from Electrospinning Polyimide for Supercapacitors

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Bo Wang ◽  
Gang Lu ◽  
Qiu-Ping Luo ◽  
Tianhu Wang

Free-standing porous carbon nanofiber networks (CFNs) were synthesized by electrospinning method and carbonization procedure. We study the implementation of porous CFNs as supercapacitor electrodes and electrochemical measurements demonstrated that porous CFNs exhibit a specific capacitance (205 F/g at the scan rate of 5 mV/s) with high flexibility and good rate capability performance (more than 70% of its initial capacitance from 5 mV/s to 200 mV/s). Furthermore, porous CFNs exhibited an excellent cycling stability (just 12% capacitance loss after 10,000 cycles). These results suggest that porous CFNs are very promising candidates as flexible supercapacitor electrodes.


2014 ◽  
Vol 2 (46) ◽  
pp. 19678-19684 ◽  
Author(s):  
Ding Nan ◽  
Zheng-Hong Huang ◽  
Ruitao Lv ◽  
Lu Yang ◽  
Jian-Gan Wang ◽  
...  

Nitrogen-enriched electrospun carbon nanofiber networks were prepared to use as a free-standing LIB anode material with ultrahigh capacity and good rate capability.





RSC Advances ◽  
2014 ◽  
Vol 4 (103) ◽  
pp. 59427-59435 ◽  
Author(s):  
Mahmut Dirican ◽  
Meltem Yanilmaz ◽  
Xiangwu Zhang

Polyaniline–porous carbon nanofiber composites were introduced for use as flexible, binder-less electrodes for high-performance supercapacitors.



RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30793-30800 ◽  
Author(s):  
Chen Chen ◽  
Kun Fu ◽  
Yao Lu ◽  
Jiadeng Zhu ◽  
Leigang Xue ◽  
...  

A tin antimony alloy-filled porous carbon nanofiber composite prepared by electrospinning exhibited high capacity and stable rate capability for use as an anode material in next-generation sodium-ion batteries.







2017 ◽  
Vol 735 ◽  
pp. 199-204 ◽  
Author(s):  
M.H. El-Shafei ◽  
Engy Ghoniem ◽  
Ahmed H. Hassanin ◽  
Ahmed. A. El-Moneim

In this work, Carbon Nanofiber mates (CNF) were fabricated by carbonization of electrospun non-conducting PolyAcryloNitrile (PAN) and PAN/PolyvinylAlcohol (PVA) nanofiber mates at 1100°C. PAN acts as a carbon source while PVA acts as a scarifying material to create porosity which leads to increase the accessible surface area. Two types of samples have been produced, carbon nanofiber mate (CNF) and Porous carbon nanofiber mate (P-CNF). The samples were first characterized by XRD, FTIR and SEM then examined as novel electrodes for supercapacitor applications. The specific capacitance (SC) results of the CNFs based on electrospun PAN mate and P-CNF based on electrospun PAN/PVA mate precursors, were 170 and 202 Fgm-1 respectively. The porous structure of P-CNF mate not only increased SC but also increased the capacitive retention and cyclic stability at discharging current density three times higher than that applied in case of CNFs. These results confirm that the tailored P-CNFs have potential for lightweight and durable flexible supercapacitor applications.



2019 ◽  
Vol 9 (5) ◽  
pp. 1016 ◽  
Author(s):  
Pengfei Zhao ◽  
Wei Li ◽  
Shiqing Fang ◽  
Ji Yu ◽  
Zhenyu Yang ◽  
...  

Freestanding thin film electrodes are competitive candidate materials for high-performance energy stockpile equipment due to their self-supporting structure and because they lack any polymer binder or conductive additive. In our work, a porous carbon nanofiber film (PCNF) electrode has been synthesized via a convenient and low-cost electrospinning approach and the following carbonization and air etching process. The obtained PCNF electrode sample shows a high reversible capacity (1138 mAh g−1 at 0.1 C), remarkable rate capacity (101.2 mAh g−1 at 15 C), and superior cycling stability with a lower capacity decay rate of ~0.013% each cycle upon 1000 cycles (278 mAh g−1 at 5 C). The prominent electrochemical performance of PCNF can be put down to the stable self-supporting conductive structure and the porous feature in each carbon nanofiber, which will significantly promote the transfer tempo of Li-ion and electron and relieve the large volume change during inserting lithium ion. More interestingly, this work exhibits a low-cost and primitive strategy to fabricate thin film anode for lithium-ion batteries.



2012 ◽  
Vol 24 (15) ◽  
pp. 2047-2050 ◽  
Author(s):  
Long Qie ◽  
Wei-Min Chen ◽  
Zhao-Hui Wang ◽  
Qing-Guo Shao ◽  
Xiang Li ◽  
...  


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