Improvement on cell cyclability of lead–acid batteries through high-energy ball milling and addition of multi-walled carbon nanotubes in the formulation of leady oxides

Autor:	M A Velasco-Soto, Luz María Martínez, Marcelo Videa, S. Castro-Pardo, L. Licea-Jiménez, L. M. Bautista-Carrillo, A. A. Rodríguez-Rodríguez, Alfredo Morales-Sánchez, S. García Esparza, S.A. Pérez-García, Francisco E. Longoria-Rodríguez
Rok vydání:	2021
Předmět:	Materials science General Chemical Engineering Oxide 02 engineering and technology Carbon nanotube Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Chemical engineering chemistry law Electrode Materials Chemistry 0210 nano-technology Lead–acid battery Ball mill Lead oxide
Zdroj:	Journal of Applied Electrochemistry. 51:387-397
ISSN:	1572-8838 0021-891X
DOI:	10.1007/s10800-020-01507-z
Popis:	Enhancement of the discharge capacity and cycle life of lead–acid batteries demands the innovative formulation of positive and negative electrode pastes that can be achieved through the modifications in the leady oxide morphology and the use of additives to control characteristics such as grain size, specific surface area, electrical conductivity, and chemical reactivity. In the present work, we describe a methodology for the improvement of the cycle life of lead oxide electrodes by the addition of multi-walled carbon nanotubes (MWCNT) and high-energy ball milling of leady oxide obtained by Barton and Sovema reactors. Positive and negative electrodes were produced and tested by cycling at constant discharge current. An improvement of 110% on the number of cycles over the unaltered Sovema electrode, and 168% over Barton electrode were found and attributed to the cured electrode morphology and the improved conductivity introduced by the addition of MWCNT. Symmetrical cells of high energy ball-milled leady oxide electrodes with MWCNT withstood 528 cycles, retaining more usable charge than its counterparts.
Databáze:	OpenAIRE
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