high temperature stable separator for lithium batteries based on sio2 and hydroxypropyl guar gum
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ID: 249203
2015
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Abstract
A novel membrane based on silicon dioxide (SiO2) and hydroxypropyl guar gum (HPG) as binder is presented and tested as a separator for lithium-ion batteries. The separator is made with renewable and low cost materials and an environmentally friendly manufacturing processing using only water as solvent. The separator offers superior wettability and high electrolyte uptake due to the optimized porosity and the good affinity of SiO2 and guar gum microstructure towards organic liquid electrolytes. Additionally, the separator shows high thermal stability and no dimensional-shrinkage at high temperatures due to the use of the ceramic filler and the thermally stable natural polymer. The electrochemical tests show the good electrochemical stability of the separator in a wide range of potential, as well as its outstanding cycle performance.
| Reference Key |
carvalho2015membraneshigh
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|---|---|
| Authors | ;Diogo Vieira Carvalho;Nicholas Loeffler;Guk-Tae Kim;Stefano Passerini |
| Journal | advances in pharmacological sciences |
| Year | 2015 |
| DOI |
10.3390/membranes5040632
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| URL | |
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