Poly(ethylene glycol) nanocomposites of sub-nanometer metal oxide clusters for dynamic semi-solid proton conductive electrolytes.

ABSTRACT: Sub-nm-scale metal oxide clusters (PW12O40 3-) show high solubility in the melt of poly(ethylene glycol) (PEG) and the obtained semi-solid nanocomposites show promising proton conductivities under ambient conditions. Suggested from scattering studies, the clusters are homogeneously dispersed in the PEG melt at the molecular scale with high loading amounts (70 wt%) and the formed real solutions can be stable for months with no aggregation or phase separation. The conductivities of the nanocomposites which are governed by the concentrations of H3PW12O40 can reach as high as 1.01 × 10-2 S cm-1 at the highest concentration. Due to the dynamic cross-linking hydrogen bonding between clusters and PEG, the nanocomposites behave like solids with negligible flow at high concentrations of clusters. U

SUBMITTER: Zheng Z 

PROVIDER: S-EPMC6836960 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature