Evaluation of the electrochemical stability of graphite foams as current collectors for lead acid batteries

Jang, Young‐Il; Dudney, Nancy J.; Tiegs, T.N.; Klett, James W.

doi:10.1016/j.jpowsour.2006.04.124

Cited by 61 publications

(28 citation statements)

References 15 publications

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“…The carbon foam (CFoam), a lightweight material, threedimensional network with open cell structure, large specific surface area, thermally and electrically conductive along with good corrosion resistance, is a promising candidate for current collector for lead acid batteries (Jang et al 2006;Chen et al 2008). The electrical conductivity of CFoam derived from different organic and inorganic precursors can be tailored by controlling processing parameters.…”

Section: Introductionmentioning

confidence: 99%

Nanostructuring effect of multi-walled carbon nanotubes on electrochemical properties of carbon foam as constructive electrode for lead acid battery

et al. 2014

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In the present study, nanostructuring effect of multi-walled carbon nanotubes (MWCNTs) on electrochemical properties of coal tar pitch (CTP) based carbon foam (CFoam) was investigated. The different weight fractions of MWCNTs were mixed with CTP and foam was developed from the mixture of CTP and MWCNTs by sacrificial template technique and heat treated at 1,400 and 2,500°C in inert atmosphere. These foams were characterized by scanning electron microscopy, X-ray diffraction, and potentiostat PARSTAT for cyclic voltammetry. It was observed that, bulk density of CFoam increases with increasing MWCNTs content and decreases after certain amount. The MWCNTs influence the morphology of CFoam and increase the width of ligaments as well as surface area. During the heat treatment, stresses exerting at MWCNTs/ carbon interface accelerate ordering of the graphene layer which have positive effect on the electrochemical properties of CFoam. The current density increases from 475 to 675 mA/cm 2 of 1,400°C heat treated and 95 to 210 mA/cm 2 of 2,500°C heat-treated CFoam with 1 wt% MWCNTs. The specific capacitance was decreases with increasing the scan rate from 100 to 1,000 mV/s. In case of 1 % MWCNTs content CFoam the specific capacitance at the scan rate 100 mV/s was increased from 850 to 1,250 lF/cm 2 and 48 to 340 lF/cm 2 of CFoam heat treated at 1,400°C and 2,500°C respectively. Thus, the higher value surface area and current density of MWCNTs-incorporated CFoam heat treated to 1,400°C can be suitable for lead acid battery electrode with improved charging capability.

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Section: Introductionmentioning

confidence: 99%

Nanostructuring effect of multi-walled carbon nanotubes on electrochemical properties of carbon foam as constructive electrode for lead acid battery

et al. 2014

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“…Their behaviors as lead acid battery electrodes indicated that carbon was suitable to act as current collectors for lead acid batteries theoretically, and so was reticulated vitreous carbon (RVC) [5]. Carbon foam, displaying its advantages of lightweight, three dimensional net structure, large specific surface area, good corrosion resistance and high electrical conductivity, is a promising candidate especially for the direct application as negative current collector [6,7]. For employment as positive current collector, it still faces some problems.…”

Section: Introductionmentioning

confidence: 99%

“…For employment as positive current collector, it still faces some problems. Yong-Il Jang et al [6] used graphite foams and non-graphitized foams as positive current collectors for lead acid batteries, respectively. The batteries tests showed that because of the intercalation and deintercalation of bisulfate ions and sulfuric acid molecules between graphite layers in the positive voltage range, graphite foams could not be used as positive current collectors for lead acid batteries while the non-graphitized ones could.…”

Section: Introductionmentioning

confidence: 99%

Pitch-based carbon foam electrodeposited with lead as positive current collectors for lead acid batteries

Chen

et al. 2009

J Appl Electrochem

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Lead electrodeposited carbon foam (LCF), whose substrate was made from pitch by a template method, was investigated as possible positive current collectors for lead acid batteries. Scanning electron microscopy, cyclic voltammetry, and galvanostatic chargedischarge tests were employed to characterize the effect of the proposed collector on the structure and electrochemical properties of the positive active material (PAM). The LCF with uniform and dense lead coating shows the similar electrochemical characteristics to metallic lead in the voltage range where the positive electrodes of lead acid batteries operate. The LCF and lead slices were used as the positive current collectors to equip lead acid batteries, respectively. Comparative charge-discharge tests show that a battery equipped with a LCF collector exhibits higher PAM utilization efficiency and longer cycle life, for LCF can provide large specific surface area which is beneficial to electrochemical reactions and PAM adhesion. In addition, a light lead acid battery with a LCF positive current collector and a carbon foam negative current collector was made and tested for the first time. It deserves systematic industrial study in the future.

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“…The heavy weight is a direct result of the use of large amounts of lead in the electrodes, both in the grids and in the active materials [4]. To improve the specific energy, lightweight, electronically conductive materials have been proposed as potential substitutes for lead alloy grids [4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Virtually, this material was similar to lead alloy foams since the lead coating was so thick (about 200-400 lm). Recently, Jang et al [13] evaluated the electrochemical stability of graphite foams as current collectors for lead acid batteries. But the assembled batteries exhibited bad cyclibilities and low active material utilization efficiencies.…”

Section: Introductionmentioning

confidence: 99%

Influence of pitch-based carbon foam current collectors on the electrochemical properties of lead acid battery negative electrodes

Chen

et al. 2008

J Appl Electrochem

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Pitch-based carbon foams prepared by a template method were used as negative current collectors to assemble flooded lead acid batteries, and the effect of the current collectors on the performance of the negative electrodes was investigated. Comparative galvanostatic charge-discharge tests show that the utilization efficiencies of the active material on the carbon foam negative current collector are 14% and 30% higher than those of the material on a lead grid one at 20 and 10 h discharge rates, respectively. Further EIS tests imply that there are also significant differences in the impedance spectra between the two electrodes. SEM images reveal that at the fully charged state, the particle size of the active material formed on the carbon foam current collector is much more uniform than that on the lead grid.

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Evaluation of the electrochemical stability of graphite foams as current collectors for lead acid batteries

Cited by 61 publications

References 15 publications

Nanostructuring effect of multi-walled carbon nanotubes on electrochemical properties of carbon foam as constructive electrode for lead acid battery

Nanostructuring effect of multi-walled carbon nanotubes on electrochemical properties of carbon foam as constructive electrode for lead acid battery

Pitch-based carbon foam electrodeposited with lead as positive current collectors for lead acid batteries

Influence of pitch-based carbon foam current collectors on the electrochemical properties of lead acid battery negative electrodes

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