New modified AGM separator and its influence on the performance of VRLA batteries

Pavlov, D.; Naidenov, V.; Ruevski, S.; Mircheva, V.; Cherneva, M

doi:10.1016/s0378-7753(02)00516-5

Cited by 21 publications

(7 citation statements)

References 3 publications

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“…The microstructural morphologies of the AGM separator, BC membrane, and PE separator were determined through SEM analysis, as shown in Figure . Figure a shows a loose arrangement of fibers in AGM with varying diameters and without interconnection . These arrangements provide the numerous void spaces, which can influence electrolyte holding.…”

Section: Resultsmentioning

confidence: 99%

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Techno-Economical Feasibility of Biocellulose Membrane along with Polyethylene Film as a Separator for Lead-Acid Batteries

Roh

Palanisamy

Thangarasu

et al. 2019

ACS Sustainable Chem. Eng.

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In this present investigation, we applied an eco-friendly bacterial cellulose (BC) membrane along with a polyethylene (PE) separator as a separator for lead-acid battery systems. The key factor of the research is to lower the cost of the lead-acid battery by introducing the BC membrane along with a thin PE separator. The specific surface areas of the BC membrane and the PE separator were 46.72 and 35.89 m2 g–1, respectively, with high porosity, which can enhance the electrolyte uptake and movement. The identified pore sizes of the BC membrane and the PE separator are 13.67 and 56.18 nm, respectively. The closely arranged microfibrils in the BC membrane with the smaller pore size can uptake a high amount of electrolyte, and it can hold it for a long period with the hydrogen interactions. In addition, the BC membrane and the PE separator exhibited higher thermal stabilities. The water uptake property of the BC membrane is 130% at 30 °C, which results in considerable electrolyte uptake. The ion exchange capacity of AGM, PE separator, and BC membrane are ∼0.0, ∼ 0.0, and 0.127 meq/g, respectively. The higher IEC is attributed to the presence of hydrophilic functional groups in the BC membrane, which increase the ion transportation in the membrane. The ion conductivity of the BC membrane is considerably higher than those of the AGM and PE separator. The charge and discharge performances of the AGM and BC-PE battery systems were analyzed using lead-acid battery cells. The exhibited discharge performances of both battery systems were considerably similar at 0.1 and 0.2 A discharge current. The final discharge capacities of the AGM battery and the BC-PE battery were 0.96 and 0.94 Ah, respectively, at 0.1 A under identical conditions. A considerable cyclic stability was observed in the BC-PE battery system during long-term operation. From our experimental analysis results, a cost-effective hybrid combination of a BC membrane along with a PE separator can be considered as an efficient separator for lead-acid battery systems.

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Section: Resultsmentioning

confidence: 99%

“…Figure 4a shows a loose arrangement of fibers in AGM with varying diameters and without interconnection. 41 These arrangements provide the numerous void spaces, which can influence electrolyte holding. As shown in Figure 4b, the highly porous and fibrous network structures were identified in the BC membrane.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Techno-Economical Feasibility of Biocellulose Membrane along with Polyethylene Film as a Separator for Lead-Acid Batteries

Roh

Palanisamy

Thangarasu

et al. 2019

ACS Sustainable Chem. Eng.

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“…The EFB is used especially for the vehicles equipped by the start & stop feature, whereas the AGM is the most performant of all the lead acid battery technologies. The AGM has been developed as a solution for the acid stratification problem [18][19][20][21][22]. For this technology, glass mat separators are used.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Investigation of the Hydrostatic Pump in a Battery Cell with Mixing Element

et al. 2015

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Lead acid battery with mixing element is a new battery technology adopted for micro-hybrid vehicles. This battery technology is based on the use of the mixing element. The aim of this paper was to study the hydrostatic pump created using the mixing element. A numerical simulation is performed to predict the pumping phenomenon occurred under the liquid sloshing in the battery cell subjected to sinusoidal excitation. The volume of fluid method based on the finite volume method is used to simulate two-phase flow in the battery cell partially filled with liquid. The distribution of the static pressure and the velocity in whole volume of the cell are presented and analyzed to understand the operating mode of the hydrostatic pump. An experimental setup with sinusoidal movement is developed, and the hydrostatic pump in the battery cell partially filled with liquid is studied. The comparison between the numerical and the experimental results shows a good agreement. In addition, an initially stratified lead acid battery cell is prepared. The effect of sinusoidal acceleration on the stratified cell is investigated. The experimental results show that hydrostatic pump can eliminate the liquid stratification under the acceleration effect.

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“…However, the more antimony in a battery, the more gassing, corrosion and water consumption will be. Some of the main reasons why batteries do not get full life cycles are corrosion, sulfation and water consumption [2][3][4][5][6][7][8]. The water level should never go beyond top border of plates and because of the presence of ingredients such as iron, chlorine etc.…”

Section: Introductionmentioning

confidence: 99%

ANN modeling of water consumption in the lead-acid batteries

Karimi

Karami

Mahdipour

2007

Journal of Power Sources

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New modified AGM separator and its influence on the performance of VRLA batteries

Cited by 21 publications

References 3 publications

Techno-Economical Feasibility of Biocellulose Membrane along with Polyethylene Film as a Separator for Lead-Acid Batteries

Techno-Economical Feasibility of Biocellulose Membrane along with Polyethylene Film as a Separator for Lead-Acid Batteries

Numerical and Experimental Investigation of the Hydrostatic Pump in a Battery Cell with Mixing Element

ANN modeling of water consumption in the lead-acid batteries

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