Effect of Anisotropic Graphite on Discharge Performance of Positive Plates in Pasted‐Type Lead‐Acid Batteries

Tokunaga, A. T.; Tsubota, Masaharu; Yonezu, K.; Ando, Keiichi

doi:10.1149/1.2100503

Cited by 37 publications

(15 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Anodic expansion of graphite additives in PAM may account for the increase in porosity, as previously reported. 21 An expansion mechanism of graphite inside the PAM has been proposed by other studies and attributed to formation of a graphite bisulfate intercalated compound. 21,22 If those findings are applicable, then ABG-1005 graphite expanded the least and LBG-2025 graphite expanded the most.…”

Section: Resultsmentioning

confidence: 83%

“…21 An expansion mechanism of graphite inside the PAM has been proposed by other studies and attributed to formation of a graphite bisulfate intercalated compound. 21,22 If those findings are applicable, then ABG-1005 graphite expanded the least and LBG-2025 graphite expanded the most. Past studies on natural flake graphite have shown there is a positive correlation between particle size and its effect on PAM performance.…”

Section: Resultsmentioning

confidence: 83%

See 1 more Smart Citation

The Effect of Expanded and Natural Flake Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

Kosacki¹,

Doğan²

2021

J. Electrochem. Soc.

View full text Add to dashboard Cite

The effects of expanded and not expanded (natural flake) graphite additives were evaluated on the discharge utilization of the positive active material (PAM) in the lead-acid battery. Graphite powders were added to the paste at 2.20 vol. % and tested in model 2V battery cells under a wide range of discharge currents from 8C to C/20. The effects of graphite on the PAM pore volume and pore size distribution were measured with mercury porosimetry, and a good correlation was found between the pore volume of the PAM and utilization performance of the cells. It was shown that the powder characteristics of graphite can affect the PAM pore volume. A correlation was found between the graphite additives’ structural order and PAM utilization.

show abstract

Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 83%

The Effect of Expanded and Natural Flake Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

Kosacki¹,

Doğan²

2021

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…Tokunaga et al observed that the 0.1-2% addition of anisotropic graphite to PAM improves the capacity and cycle life explained by increased porosity of PAM caused by graphite expansion during oxidation [32]. This allows for a better access of sulfuric acid to the active mass.…”

Section: Carbon As An Additive To Positive Active Massmentioning

confidence: 99%

Applications of carbon in lead-acid batteries: a review

Lach

Wróbel

et al. 2019

J Solid State Electrochem

View full text Add to dashboard Cite

A review presents applications of different forms of elemental carbon in lead-acid batteries. Carbon materials are widely used as an additive to the negative active mass, as they improve the cycle life and charge acceptance of batteries, especially in high-rate partial state of charge (HRPSoC) conditions, which are relevant to hybrid and electric vehicles. Carbon nanostructures and composite materials can also play such a role. The positive active mass additions are generally less beneficial than the negative ones. Carbon can also be applied as a material for reticulated current collectors for both negative and positive plates. This modern technology allows to increase the battery specific energy and active mass utilization. Batteries with such collectors can show improved cycle life, owing to a better active mass mechanical support. Other recent use of carbon in secondary batteries is as supercapacitor electrodes. They can replace the negative plate or be connected in parallel with such a lead plate. These solutions increase the specific power and HRPSoC performance. Presented new carbon-based technologies in a construction of lead-acid batteries can significantly improve their performance and allow a further successful competition with other battery systems.

show abstract

“…To determine the microstructure of PbSO 4 and PbO 2 formed on electrode surface, before taking SEM imaging, electrodes were polarized by CV with 20 cycles.…”

Section: Sem Imagingmentioning

confidence: 99%

Sodium Lauryl Sulfate Effects on Electrochemical Behavior of Positive Active Material and Commercial Positive Plates in Lead-Acid Battery

Nguyen¹

2018

JST

View full text Add to dashboard Cite

Sodium lauryl sulfate (SLS) is an anionic surfactant used in many applications such as cleaning and hygiene products, electroplating, etc. For the first time, effects of SLS as an electroyte additive on electrochemical behavior of positive active material and commercial positive plates have been studied by cyclic voltammetry (CV), eletrochemical impedance measurements. The electrode surface morphology after 20 cycles of CV was studied by using scanning electron microscopy (SEM). Results show that SLS additive significantly improves the conversion reactions of positive active material and therefore enhances charge/discharge capacity. By increasing SLS concentrate, crystalline structure of positive active material changed. The effects of SLS on kinetic parameters of positive electrode reactions are also discussed in this paper. The results showed that SLS is promising for use as electrolyte additive for lead-acid batteries.Keywords: lead-acid battery, positive plate, positive active material, electrolyte aditive, sodium lauryl sulfate.

show abstract

Effect of Anisotropic Graphite on Discharge Performance of Positive Plates in Pasted‐Type Lead‐Acid Batteries

Cited by 37 publications

References 3 publications

The Effect of Expanded and Natural Flake Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

The Effect of Expanded and Natural Flake Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

Applications of carbon in lead-acid batteries: a review

Sodium Lauryl Sulfate Effects on Electrochemical Behavior of Positive Active Material and Commercial Positive Plates in Lead-Acid Battery

Contact Info

Product

Resources

About