Achieving high electrode specific capacitance with materials of low mass specific capacitance: Potentiostatically grown thick micro-nanoporous PEDOT films

Snook, Graeme A.; Peng, Chuang; Fray, Derek J.; Chen, George

doi:10.1016/j.elecom.2006.08.037

Cited by 157 publications

(84 citation statements)

References 23 publications

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“…In the case of the PEDOT systems, the effects of the O-CNXLs on the polymer morphology was more evident than that observed in the PANI systems. The O-CNXL-free PEDOT film contained relatively thick aggregates, as expected 8 for electrodeposited PEDOT [46,48], but the PEDOT/O-CNXL film ( Figure 2D) was porous, which again is expected to improve the electrochemical performance of the nanocomposite.…”

Section: Resultsmentioning

confidence: 90%

“…If one intends to use novel electrode materials in the development of real supercapacitors, the mass specific capacitance reported when only a small amount of material is used is not a reliable indicator of performance because it does not translate to device capacitance [46][47][48].…”

Section: Behaviour Of Ecp Films Electrodeposited At High Charge Densitymentioning

confidence: 99%

“…To obtain a high electrode specific capacitance, it is necessary to be able to form a porous ECP or ECP composite in order to facilitate electrolyte access throughout the volume of the material [46][47][48]57]. In the case of the ECP/CNXL nanocomposites, it is important to 13 verify that the porous structure can be retained in thick films.…”

Section: Behaviour Of Ecp Films Electrodeposited At High Charge Densitymentioning

confidence: 99%

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Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors

Liew

Thielemans

Walsh

2014

J Solid State Electrochem

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CNXLs into the electrodepositing polymer film led to the formation of a porous polymer/CNXL nanocomposite structure. The films were characterised using scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge analysis. The specific capacitances of the nanocomposite materials were higher than those of the CNXL-free counterparts (488 F g -1 for PANI/CNXL; 358 F g -1 for PANI; 69 F g -1 for PEDOT/CNXL; 58 F g -1 for PEDOT). The durability of the PANI/CNXL film under potential cycling was slightly better than that of the CNXL-free PANI, while the PEDOT film was slightly more durable than the PEDOT/CNX film. Using electrodeposition, it was possible to form thick PANI/CNXL films, with total electrode capacitances of 2.07 F cm -2 (and corresponding specific capacitances of 440 F g -1 ),demonstrating that this particular nanocomposite may be promising for the construction of high performance supercapacitors.

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Section: Resultsmentioning

confidence: 90%

Section: Behaviour Of Ecp Films Electrodeposited At High Charge Densitymentioning

confidence: 99%

Section: Behaviour Of Ecp Films Electrodeposited At High Charge Densitymentioning

confidence: 99%

See 1 more Smart Citation

Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors

Liew

Thielemans

Walsh

2014

J Solid State Electrochem

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“…There are clear indications [1]- [4] that the supercapattery will offer clear improvement over the other well known energy storage solutions, the capacitor-battery hybrid behaviour of the supercapattery device being able to capitalize on the advantages of both while cancelling most of their drawbacks. However, they cannot connect directly to the AC power grid; therefore.…”

Section: The Power Electronic Interfacementioning

confidence: 99%

“…The unit cell made from these nano-composite materials may have a voltage of 1.0-3.0 V, mainly depending on the nature of electrolyte used. The specific capacitance of these materials ranges from 100 to 500 F/g [1]- [3]. Considering that 1.5 V is a technically viable unit cell voltage, it may be calculated that the specific energy (or energy density vs. active material mass) can reach 28-140 kJ/kg (or 8-39 Wh/kg) (vs. both electrodes in a unit cell.…”

Section: Introductionmentioning

confidence: 99%

Selecting the power electronic interface for a supercapattery based energy storage system

Klumpner

Asher

2009

2009 IEEE Bucharest PowerTech

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Abstract--This paper presents the initial investigations in selecting the topology of the power electronic interface for an energy storage system for power levelling applications based on a novel storage device, the supercapattery. The particularities of the supercapattery device are summarized leading to a multistage power converter structure. A review of the two stage DC/DC converter structure to interface with the supercapattery and of various DC/AC inverters and conversion techniques suitable for connection to a medium voltage and high power AC grid, is given. Simulation results prove the capability of the power electronic interface to control independently and fast the active and reactive power flow which are vital in power peak leveling and power grid stabilization.

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Conducting Polymers and Their Application in Supercapacitor Devices

Abdelhamid

Snook

2018

Encyclopedia of Polymer Science and Technology

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Considering the excellent chemical and physical properties of conducting polymers (CPs), such as high surface area as well as short path lengths for electronic and ionic transport, along with their flexible nature, places CPs in the spotlight as one of the most widely studied materials for energy storage, and especially for supercapacitor electrodes. This article briefly covers the theory behind CPs, their methods of production and customization, and what makes CPs as desirable materials for supercapacitor applications. In addition, the synthesis of thiophene derivatives, used to impove the stability of the resultant CP, is also presented. One negative effect of using CPs is often associated with the increase of their molecular weight,which results in lower gravimetric performance. Therefore, we discuss the important difference between practical gravimetric capacitance and theoretical gravimetric capacitance. Some of the limitations of CPs (such as limited cycle life) can be improved upon via compositing with carbon materials or metal oxide materials. Finally, a discussion of real‐world devices and prototypes concludes the article. Devices utilizing CPs as the main active component are mainly limited to trial devices and prototypes. Nonetheless, CPs continue to attract interest in the academic world as prospective supercapacitor materials with great potential to outperform the existing commercial devices.

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Achieving high electrode specific capacitance with materials of low mass specific capacitance: Potentiostatically grown thick micro-nanoporous PEDOT films

Cited by 157 publications

References 23 publications

Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors

Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors

Selecting the power electronic interface for a supercapattery based energy storage system

Conducting Polymers and Their Application in Supercapacitor Devices

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