Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6472457 | Electrochimica Acta | 2016 | 8 Pages |
LiCl/DMAc (dimethylacetamide) solution dissolved microcrystalline cellulose (LD-MCC) showed potential benefits to the alkaline solid polymer electrolyte (ASPE). High alkali tolerance (up to 70Â wt% KOH loading), remarkable improvements in ionic conductivity (from 0.018Â SÂ cmâ1 to 0.153Â SÂ cmâ1) and mechanical properties (3-fold increase in tensile strength from 0.28Â MPa to 0.76Â MPa) were achieved just via an incorporation of 5Â wt% of LD-MCC into the ASPE matrix. Wide-angle X-ray diffraction indicated that LD-MCC entrapped KOH and hindered its aggregation. X-ray Energy Dispersive Spectrometer revealed that K+ was preferentially located on the LD-MCC surfaces rather than the polymeric matrix. Scanning Electron Microscopy of freeze-dry sample demonstrated a submicro-porous morphology with reduced average pore size (175Â nm) after the incorporation of LD-MCC in ASPE matrix. The incorporated LD-MCC acted as KOH stabilizer, hydrophilicity agent and OHâ transport media. Distinct micro-structures before and after the incorporation of LD-MCC were investigated to reveal the special role of LD-MCC in the performance improvement of ASPE membrane.
Graphical abstractDownload high-res image (202KB)Download full-size image