Hyperbranched polymer electrolyte with a phosphonic acid group at the periphery

3 Hyperbranched polymer electrolyte with a phosphonic acid group at the periphery 

Hyperbranched polymers with a phosphonic acid (PA) group (HBP-PA(H, L)) and with both phosphonic acid and acryloyl groups (HBP(H, L)-PA-Ac) 

Semi-interpenetrated electrolyte membrane (HBP-PA-co-HBP-Ac) and crosslinked electrolyte membrane (CL-HBP-PA) 

The preparation of polymer electrolyte membrane (HBP-PA-co-FlPB-Ac membrane) by the interpenetration reaction of the HBP-PA and the HPB-Ac in vacuo at 130 °C for 48 h was attempted. Unfortunately, phase 

The crosslinked electrolyte membranes (CL-HBP-PA) were prepared from the HBP-PA-Acs by a solvent casting technique on parting-agent coated PET sheet at room temperature, followed by the crosslinking reaction using BPO. On the preparation of the electrolyte membrane, 10 wt% fumed silica was added to the HBP-PA-Ac solution in DMAc to obtain a large size homogeneous film in the same way as previously for CL-HBP-SA. 

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