Enhanced performance of starter lighting ignition type lead-acid batteries with carbon nanotubes as an additive to the active mass

Rotem Marom, Baruch Ziv, Anjan Banerjee, Beni Cahana, Shalom Luski, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

Abstract

Addition of various carbon materials into lead-acid battery electrodes was studied and examined in order to enhance the power density, improve cycle life and stability of both negative and positive electrodes in lead acid batteries. High electrical-conductivity, high-aspect ratio, good mechanical properties and chemical stability of multi-wall carbon nanotubes (MWCNT, unmodified and mofified with carboxylic groups) position them as viable additives to enhance the electrodes' electrical conductivity, to mitigate the well-known sulfation failure mechanism and improve the physical integration of the electrodes. In this study, we investigated the incorporation-effect of carbon nanotubes (CNT) to the positive and the negative active materials in lead-acid battery prototypes in a configuration of flooded cells, as well as gelled cells. The cells were tested at 25% and 30% depth-of-discharge (DOD). The positive effect of the carbon nanotubes (CNT) utilization as additives to both positive and negative electrodes of lead-acid batteries was clearly demonstrated and is explained herein based on microscopic studies.

Original languageEnglish
Pages (from-to)78-85
Number of pages8
JournalJournal of Power Sources
Volume296
DOIs
StatePublished - 24 Jul 2015

Keywords

  • Carbon nanotubes (CNT)
  • Lead-acid batteries
  • Multi-wall carbon nanotubes (MWCNT)
  • Pb electrodes
  • PbO<inf>2</inf> electrodes

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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