Highly Electronegative Element-Rich COF Modified Separator Achieves High-Performance of Lithium–Sulfur Batteries
Source abstract
Abstract
In this work, a covalent organic framework (COF) containing high electronegativity (TTBT-COF) was prepared to improve the separator of commercial Celgard lithium–sulfur batteries (LSBs). The LSBs with a TTBT-COF separator had a high initial capacity of 1033 mAh g –1 at 0.1 C and remained at 530 mAh g –1 after 500 cycles at 1 C. The average capacity attenuation rate per cycle is 0.057%. In addition, they exhibit a high initial capacity of 616 mAh g –1 at 2 C. The TTBT-COF improved separator can significantly inhibit the shuttle effect of polysulfides, thereby improving the cycle stability and coulomb efficiency of the battery, providing another strategy for the construction of high-performance LSBs.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, China
Marine Engineering College, Dalian Maritime University, Linghai Road 1, Dalian, Liaoning 116026, China
Funding
People's Government of Jilin Province · Jilin Provincial Scientific and Technological Development Program
References (37)
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