教授
博士生导师
硕士生导师
教师拼音名称:zhuxiaodong
电子邮箱:
职称:教授
毕业院校:哈尔滨工业大学
学术荣誉:2019 当选:省高端人才
邮箱:
2019-09-26 泰山学者青年专家
2009-01-06 “国防科技创新团队”核心成员
2007-05-15 黑龙江省优秀毕业生(博士)
2007-06-30 哈尔滨工业大学优秀毕业生
最后更新时间:..
关键字:METAL-ORGANIC FRAMEWORKS; PRUSSIAN BLUE; GRAPHENE AEROGEL; ENERGY; PERFORMANCE; TECHNOLOGIES; TEMPERATURE; CHALLENGES; NANOCUBES; SPHERES
摘要:Lithium-sulfur (Li-S) batteries are regarded as one of the most promising candidates for next-generation energy storage systems due to their advantages of its high specific capacity and low material cost. Regrettably, the electrical insulation nature of sulfur, the volume expansion during lithiation, and the internal shuttle effect aroused by the polysulfides dissolution are the central issues for sulfur cathodes. Here, CoFe2O4@C nanocages derived from Prussian blue analogues and polydopamine were utilized as a sulfur host to address these problems. The polar Co-Fe oxide afforded chemical adsorption sites for anchoring polysulfides to reduce the shuttling effect. The hollow core structure of the nanocages could withstand the large volume change during lithiation and delithiation processes. The conductive carbon layer on the nanocages could ameliorate the extremely low electrical conductivity of S and Li2S. The S/CoFe2O4@C cathode demonstrated high capacity and excellent cyclability (821 mA h g(-1)after 100 cycles at 0.5C). More importantly, the combinational strategies of good conductivity, physical space encapsulation, and chemical adsorption provide a means of resolving the current cathode issues in Li-S batteries.
卷号:8
期号:39
是否译文:否