Activated carbon derived from glutinous rice via gamma radiolysis for lithium-sulfur battery cathodes

被引：2
作者：
Anantachaisilp, Suranan [1 ]
Limmeechokchai, Passavorn [1 ]
Sirilapyanonth, Kanok [1 ]
Moungsombat, Sukpawat [1 ]
Kaenket, Surasak [2 ]
Utapong, Teerawat [3 ]
Kwamman, Tanagorn [3 ]
机构：
[1] Kamnoetvidya Sci Acad, Rayong 21210, Thailand
[2] Vidyasirimedhi Inst Sci & Technol, Sch Energy Sci & Engn, Dept Chem & Biomol Engn, Rayong 21210, Thailand
[3] Thailand Inst Nucl Technol Publ Org, Nakhon Nayok 26120, Thailand
来源：
MATERIALS ADVANCES | 2022年 / 3卷 / 14期
关键词：
NITROGEN-DOPED GRAPHENE; PORE STRUCTURE; PERFORMANCE; OXIDE; ADSORPTION; INTERLAYER; SPECTRA; AEROGEL; LEVEL; DOTS;
D O I：
10.1039/d2ma00222a
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Although lithium-sulfur batteries (LSBs) have high theoretical capacities (1675 mA h g(-1)), an irreversible charge/discharge process (shuttle effect) due to polysulfide and insulating lithium sulfide (Li2S) formation causes the death of battery cells. This study aims to solve the shuttle effect by anchoring polysulfide onto porous carbon/sulfur cathodes via chemical interactions. The porous activated carbons were derived from glutinous rice (RAC) and were modified through water (RAC-W) or ammonia radiolysis (RAC-N) using a gamma source (25 kGy). The specific capacities of LSBs obtained from RAC-W and RAC-N are >900 mA h g(-1) and they are stable for more than 150 cycles, which is significantly higher than that of unmodified RAC. Furthermore, carbonyl and pyridinic nitrogen moieties formed in RAC-W and RAC-N from gamma radiolysis result in enhanced interactions between polysulfide and the cathode framework.
引用
收藏
页码：5807 / 5812
页数：6
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