One-pot synthesis of long-range aligned nanochannels for Li-ion transfer pathways
(2025) Nanoscale — Vol. 17, n° 12, p. 7008-7015 (2025)
Files
authorreprintsZehan.pdf
Open Access - Adobe PDF
- 1.9 MB
Details
- Authors
- Abstract
- Limited ionic conductivity (σ) of solid polymer electrolytes (SPEs) is a bottleneck for their practical application. Constructing ordered ionic transfer highways is a prospective direction to promote σ. Here, we propose a straightforward one-pot synthesis strategy for the obtention of long-range aligned nanochannels, which is based on the evaporation of the solvent to induce the self-assembly of Pluronic® F127-resol micelles. To obtain SPEs, dicyandiamide (DCD) and LiClO4 are uniformly dispersed in the F127-resol nanochannels. Compared to the random counterpart, the accordingly synthesized ordered SPE significantly improves room-temperature σ by 2 orders of magnitude reaching 1.65 × 10−4 S cm−1 at 20 °C. The FTIR spectra further demonstrate that the best performing sample possesses more Li+ ions coordinated to cyano groups from DCD and less coordinated to ether moieties from F127-resol, further decreasing the activation energy for Li+ mobility since cyano groups have lower binding energy to Li+ than ether ones. Both aligned nanostructures and beneficial coordinating groups synergistically accelerate the ionic transport, contributing to the formation of efficient Li-ion transfer pathways.
- Affiliations
Citations
Chen, Z., Alvarez Moises, I., Bruker, R., Jia, H., Yan, S., Zhang, Y., He, Z., Zhou, K., Melinte, S., Rubatat, L., Meerholz, K., & Gohy, J.-F. (2025). One-pot synthesis of long-range aligned nanochannels for Li-ion transfer pathways. Nanoscale, 17(12), 7008-7015. https://doi.org/10.1039/d4nr05111d (Original work published 2025)