Improvement of the lead acid battery performance by the addition of graphitized carbon nanofibers together with a mix of organic expanders in the negative active material
| Autor: | M. Blecua, A.F. Romero, J. Valenciano, F. Trinidad, Pilar Ocón, Enrique Fatás |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Battery (electricity)
Materials science Renewable Energy Sustainability and the Environment Carbon nanofiber 020209 energy Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Sulfation State of charge chemistry Chemical engineering 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering 0210 nano-technology Lead–acid battery Carbon Loss rate |
| Zdroj: | Journal of Energy Storage. 23:106-115 |
| ISSN: | 2352-152X |
| DOI: | 10.1016/j.est.2019.03.012 |
| Popis: | Lead Acid Batteries (LABs) in the Micro Hybrid vehicle have to work in Partial State of Charge (PSoC) conditions, where the negative plates may develop high sulfation leading to the battery death. In order to reduce this sulfation, Graphitized Carbon Nanofibers (GANFg) at 0.10% and two types of Organic Expanders (OEs) were used as additives for the negative plates. These fibers were previously dispersed with a certain amount of OEs. Five mixtures were selected, and the corresponding negative plates were prepared. 2 V / 1 Ah cells were assembled and tested, together with the physicochemical properties of the plates. During the formation of the cells, GANFg are thought to be integrated into the NAM skeleton where would improve the NAM energetic structure. As a result, the use of GANFg slightly enhanced the capacity and the cold cranking ability, although this last one was essentially dominated by the OEs concentration. A lower OEs concentration led to higher charge acceptance, and the use of GANFg involved a higher water loss. However, the water loss rate was considered low in comparison with other carbon materials. GANFg addition increased the cycle life of the cells during the 17.5% DoD cycling test (at PSoC). |
| Databáze: | OpenAIRE |
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