Cellulose nanocrystals in lithium batteries

Strongly performing lithium batteries that also promise the potential of recyclability or biodegradability are beginning to become possible with the application of cellulose nanocrystals in this field. One recent offering is a paper from Christian Hänsel et al. from ETH, Switzerland. They have constructed a lithiated mesoporous membrane. This cellulose nanocrystal membrane, infused with organic solvent (ethylene carbonate/diethylcarbonate) shows a good Li-ion conductivity of 0.2 × 10^–4 S cm^–1 at room temperature, a near unity Li⁺ transference number (δLi⁺ = 0.93), and a wide operational window (≥ 4.5 V) against Li. These properties of the cellulose nanocrystal ionomer electrolyte enable smooth Li metal deposition and stable cycling of Li-LiFePO₄ cells.

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For more information, please consult the full article: A single Li-ion conductor based on cellulose.