维普中文期刊产品整合服务

Advanced all-solid-state lithium-selenium batteries enabled by selenium-nitrogen doped hierarchic meso-microporous carbon nanospheres composite cathode

查看全文 作　　者：Chongxing [1]Li;Renbo [1]Liu;Shuxian [1]Zhang;Qingyu [1]Li;Cong [1]Wang;Zhiwei [1]Zhang;Chengxiang [1]Wang;Longwei [1]Yin;Rutao [1]Wang 高影响力作者 机构地区：[1]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education,School of Materials Science and Engineering,Shandong University,Ji’nan 250061,China高影响力机构 出　　处：《Chinese Chemical Letters》索引2023年第34卷第9期,共5页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China(Nos.51902188,52272224);Innovation Capacity Improvement Project of Small and Medium-Sized Technology-Based Enterprise of Shandong Province(No.2021TSGC1149);Youth Innovation Team Project of Shandong Provincial Education Department(No.10000082295015);Natural Science Doctoral Foundation of Shandong Province(No.ZR2019BEM019);the Future Program for Young Scholar of Shandong University。 摘　　要：Selenium,an element belonging to the same group in the periodic table as sulfur,has a high electronic conductivity(1×10^(-5)S/cm)and a high volumetric energy density(3253 mA h/cm^(3)),which is a prospective cathode material for high-energy all-solid-state rechargeable batteries.However,its wide use is hindered by large volume expansion and low utilization rate.In this work,Se-infused nitrogen-doped hierarchical meso-microporous carbon composites(Se/NHPC)are prepared by a melt-diffusion process.Amorphous Se is uniformly dispersed in meso-micropores of NHPC with a high mass loading of 81%.All-solid-state Li-Se batteries fabricated by using Se/NHPC as the cathode,a Li-In alloy as the anode,and Li_(6)PS_(5)Cl as the solid-state electrolyte,deliver a highly reversible capacity of 621 m Ah/g(92%of theoretical capacity),a good rate capability and a high capacity retention value of 80.9%after 100 cycles.It is found that the capacity decay of Se cathode is mainly related to the interfacial degradation and the separation of Se from the carbon substrate,as suggested by the continuous increase of interfacial resistance and the structural transformation from amorphous Senchains to Se8rings initial discharge/charge cycle and then to the trigonally crystalline Se chains structure after the long-term cycles. 关 键 词：L-Se battery Solid-state electrolyte Carbon nanospheres Li_(6)PS_(5)Cl Composite
相关文献

参考文献(31)

引证文献(2)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费