Journal
ELECTROCHIMICA ACTA
Volume 359, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.136987
Keywords
Integrated electrode; Flexible; PMIA; NIPS; Liithium-sulfur natteries
Categories
Funding
- National Key R&D Program of China [2017YFE0114100]
- Science and Technology Project of Guangdong Province of China [2019 ST115]
- National Natural Science Foundation of China [21805240]
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Lithium-sulfur (Li-S) batteries are of great interest in next-generation flexible electronic devices for their much higher energy density. However, current Li-S batteries are still facing the problem about rational construction of the flexible power sources. Herein, a novel flexible and integrated electrode is fabricated through a non-solvent induced phase separation (NIPS) method with poly(m-phenylene isophthalamide) (PMIA) as the flexible support for Li-S batteries. Notably, the integrated electrode shows the capability of adapting the volume expansion of cathode materials, inhibiting the diffusion of lithium polysulfides and suppressing the dendrite growth of Li. As a result, battery assembled with the fabricated electrode exhibits a capacity of 773.6 mAh g(-1) at 1 C. After 600 cycles, the capacity still remains at 565.5 mAh g(-1) with the calculated capacity fade of 0.045% per cycle. This proposed strategy is advanced and feasible, which has great potential in next-generation portable electronic devices. (C) 2020 Elsevier Ltd. All rights reserved.
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