Te recomiendo leer mi última contribución “Recent advances in lithium-ion rechargeable batteries,» Mapping Ignorance, 02 Sep 2015, cuyo primer párrafo (en inglés) dice: «Lithium-ion batteries are widely used in portable electronic devices and electric vehicles since their introduction by Sony in 1991. Safety is an important concern since about two billion cells are produced every year but with a one-in-200,000 failure rate. Excessive temperature variations and high temperatures over the melting point of the metallic lithium can cause a thermal runaway reaction that ignites a fire and consequently cause a violent explosion. To avoid the inherent instability of lithium metal, non-metallic lithium batteries are preferred, but at the price of a lower energy density. However, in some cases Li dendrites form, leading to severe short circuiting. Hitoshi Maruyama, from University of Tsukuba, Ibaraki, Japan, and colleagues have proposed a new anode material that minimizes dendritic Li formation; concretely, they have suggested the use of three-dimensional amorphous silicon polymers poly(methylsilyne) and poly(phenylsilyne) for the anode. Both exhibit an excellent performance in thermal-abuse tests.»
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Mi post se basa en los siguientes artículos publicados en agosto:
- Hitoshi Maruyama et al., “Improving battery safety by reducing the formation of Li dendrites with the use of amorphous silicon polymer anodes,” Scientific Reports 5: 13219, 07 Aug 2015, doi: 10.1038/srep13219.
- Feng Leng et al., “Effect of Temperature on the Aging rate of Li-Ion Battery Operating above Room Temperature,” Scientific Reports 5: 12967, 06 Aug 2015, doi: 10.1038/srep12967.
- Sa Li et al., “High-rate aluminium yolk-shell nanoparticle anode for Li-ion battery with long cycle life and ultrahigh capacity,” Nature Communications 6: 7872, 05 Aug 2015, doi: 10.1038/ncomms8872.
- Goojin Jeong et al., “A room-temperature sodium rechargeable battery using an SO2-based nonflammable inorganic liquid catholyte,” Scientific Reports 5: 12827, 05 Aug 2015, doi: 10.1038/srep12827.
- Giuseppe Antonio Elia, Jusef Hassoun, “A Polymer Lithium-Oxygen Battery,” Scientific Reports 5: 12307, 04 Aug 2015, doi: 10.1038/srep12307.