title: Single-Wall Carbon Nanotube Doping in Lead-Acid Batteries: A New Horizon.
abstract: The addition of single-wall carbon nanotubes (SWCNT) to lead-acid battery electrodes is the most efficient suppresser of uncontrolled sulfation processes. Due to the cost of SWCNT, we studied the optimization loading of SWCNT in lead-acid battery electrodes. We optimized the SWCNT loading concentrations in both the positive and negative plates, separately. Loadings of 0.01% and 0.001% in the positive and negative active masses were studied, respectively. Two volts of lead-acid laboratory cells with sulfuric acid, containing silica gel-type electrolytes, were cycled in a 25% and 50% depth-of-discharge (DOD) cycling with a charging rate of C and 2C, respectively, and discharge rates of C/2 and C, respectively. All tests successfully demonstrated an excellent service life up to about 1700 and 1400 cycles for 25% and 50% DOD operations, respectively, at a low loading level of SWCNT. This performance was compared with CNT-free cells and cells with a multiwall carbon nanotube (MWCNT) additive. The outstanding performance of the lead-acid cells with the SWCNT additive is due to the oxidative stability of the positive plates during charging and the efficient reduction in sulfation in both plates while forming conducting active-material matrices.
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Anjan
authors.identifier: http://orcid.org/0000-0002-5658-4610
authors.initials: A
authors.lastname: Banerjee
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Baruch
authors.initials: B
authors.lastname: Ziv
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Yuliya
authors.initials: Y
authors.lastname: Shilina
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Elena
authors.initials: E
authors.lastname: Levi
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Shalom
authors.initials: S
authors.lastname: Luski
authors.affiliation: Department of Chemistry, Bar-Ilan University , Ramat-Gan 590002, Israel.
authors.forename: Doron
authors.identifier: http://orcid.org/0000-0002-1151-546X
authors.initials: D
authors.lastname: Aurbach
keywords: MWCNT; SWCNT; gel electrolyte; lead-acid batteries; sulfation