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Feng, Lanxiang; Zhu, Zhiwei; He, Yan; Ji, Yuan; He, Xuewe; Jing, Lei; Yang, Mingbo; Yang, Wei; Wang, Yu
Journal of energy chemistry, February 2022, 2022-02-00, Letnik: 65Journal Article
Inspired by the hail formation in nature, a sulfur-based nanostorm technology is reported to realize scalable production of core–shell S/C active materials via micro-adhesion guided self-assembly mechanism. Display omitted The demand on low-carbon emission fabrication technologies for energy storage materials is increasing dramatically with the global interest on carbon neutrality. As a promising active material for metal-sulfur batteries, sulfur is of great interest due to its high-energy-density and abundance. However, there is a lack of industry-friendly and low-carbon fabrication strategies for high-performance sulfur-based active particles, which, however, is in critical need by their practical success. Herein, based on a hail-inspired sulfur nano-storm (HSN) technology developed in our lab, we report an energy-saving, solvent-free strategy for producing core–shell sulfur/carbon electrode particles (CNT@AC-S) in minutes. The fabrication of the CNT@AC-S electrode particles only involves low-cost sulfur blocks, commercial carbon nanotubes (CNT) and activated carbon (AC) micro-particles with high specific surface area. Based on the above core–shell CNT@AC-S particles, sulfur cathode with a high sulfur-loading of 9.2 mg cm−2 delivers a stable area capacity of 6.6 mAh cm−2 over 100 cycles. Furthermore, even for sulfur cathode with a super-high sulfur content (72 wt% over the whole electrode), it still delivers a high area capacity of 9 mAh cm−2 over 50 cycles in a quasi-lean electrolyte condition. In a nutshell, this study brings a green and industry-friendly fabrication strategy for cost-effective production of rationally designed S-rich electrode particles.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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