Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7725301 | Journal of Power Sources | 2018 | 9 Pages |
Abstract
Nano-sized fillers in a polymer matrix with good distribution can play a positive role in improving polymer electrolytes in the aspects of ionic conductivity, mechanical property and electrochemical performance of Li-ion cells. Herein, polyethylene oxide (PEO)/Li3PS4 hybrid polymer electrolyte is prepared via a new in-situ approach. The ionic conductivities of the novel hybrid electrolytes with variable proportions are measured, and the optimal electrolyte of PEO-2%vol Li3PS4 presents a considerable ionic conductivity of 8.01â¯Ãâ¯10â4â¯Sâ¯cmâ1 at 60â¯Â°C and an electrochemical window up to 5.1â¯V. The tests of DSC and EDXS reveal that the Li3PS4 nanoparticles with better distribution, as active fillers scattering in the PEO, exhibit a positive effect on the transference of lithium ion and electrochemical interfacial stabilities. Finally, the assembled solid-state LiFePO4/Li battery presents a decent cycling performance (80.9% retention rate after 325 cycles at 60â¯Â°C) and excellent rate capacities with 153, 143, 139 and 127â¯mAh gâ1 at the discharging rate of 0.1â¯C, 0.2â¯C, 0.5â¯C and 1â¯Câ¯at 60â¯Â°C. It is fully proved that it is an advanced strategy to preparing the new organic/inorganic hybrid electrolytes for lithium-ion batteries applications.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Shaojie Chen, Junye Wang, Zhihua Zhang, Linbin Wu, Lili Yao, Zhenyao Wei, Yonghong Deng, Dongjiu Xie, Xiayin Yao, Xiaoxiong Xu,