Effect of polyvinyl alcohol/nano-carbon colloid on the electrochemical performance of negative plates of lead acid battery

• Published in: Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2019-01, Vol.832, p.152-157
• Main Authors: Yin, Jian, Lin, ZheQi, Liu, DeBo, Wang, Can, Lin, HaiBo, Zhang, WenLi
• Format: Article
• Language: English
• Subjects: Acceptance; Acids; Batteries; Carbon; Colloiding; Current carriers; Electrochemical analysis; Electrochemical impedance spectroscopy; Electrode polarization; Electrodes; Hydrogen evolution reaction; Lead acid batteries; Lead acid battery; Lithium; Negative electrode; Partial state of charge; Polyvinyl alcohol; Renewable energy storage; Sulfation; Taxicabs; Test markets
• ISSN: 1572-6657; 1873-2569
• DOI: 10.1016/j.jelechem.2018.10.069

Polyvinyl alcohol/nano-carbon colloid (PCC) was prepared through a simple physical mixture process. Both fully charge-discharge and insufficient charge tests were carried out to demonstrate the positive effects of PCC on the electrical storage capability of the negative electrode of lead acid battery. Cyclic voltammetry, steady polarization and electrochemical impedance spectroscopy were used to characterize the influences of PCC on the electrochemical behaviors of negative electrode in the lead acid battery. Experiment results demonstrate that PCC has positive effect on inhibiting PbSO4 growth and increasing the HER overpotential, thus the lead acid battery with PCC shows the enhanced charge acceptance and stable discharge capacities under insufficient charge test. This paper opens a new way for enhancing the performance of lead acid battery without changing the traditional structure and design of lead acid battery. Polyvinyl alcohol/nano-carbon colloid has positive effect on the electrochemical energy storage by lead acid battery under insufficient charge condition. [Display omitted] •Polyvinyl alcohol/nano-carbon colloid is prepared from simple dissolution process.•Polyvinyl alcohol/nano-carbon colloid has positive effect on lead electrode process.•Polyvinyl alcohol/nano-carbon colloid inhibits the hydrogen evolution reaction.•Polyvinyl alcohol/nano-carbon colloid inhibits the growth of PbSO4.