维普中文期刊产品整合服务

Oxygen-deficient TiO_(2) Yolk-shell Spheres for Enhanced Lithium Storage Properties

查看全文 作　　者：Zhaoqian [1]Li;Yuqi [1]Peng;Chaofeng [4]Liu;Xianxi [3]Zhang;Xiuling [6]Li;Yang [1]Huang;Yingke [2]Ren;Denghui [5]Ji;Guozhong [4]Cao 高影响力作者 机构地区：[1]Key Laboratory of Photovoltaic and Energy Conservation Materials,CAS,Institute of Solid State Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;[2]College of Science,Hebei University of Science and Technology,Shijiazhuang 050018,China;[3]Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage&Novel Cell Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252000,China;[4]Department of Materials Science and Engineering,University of Washington,Seattle WA 98195,USA;[5]College of Physics,Mechanical and Electronical College,Shijiazhuang University,Shijiazhuang City 050035,P.R.China;[6]College of Physics and Information Engineering,Hebei Advanced Thin Films Laboratory,Hebei Normal University,Shijiazhuang City 050024,P.R.China高影响力机构 出　　处：《Energy & Environmental Materials》索引2022年第5卷第1期,共7页高影响力期刊 基　　金：supported by the NationallKey R&D Program of China(2019YFB1503200);the NationallScience Foundation(CBET-1803256);the Anhui ProvinciallNaturallScience Foundation(1908085QB52);the CASHIPS Director’s Fund(YZJJ2018QN21);Shijiazhuang University DoctorallScientific Research Startup Fund Project(20BS019);Colleges and universities in Shandong Province science and technology projects(J17KA097);CAS Key Laboratory of Photovoltaic and Energy Conservation,Chinese Academy of Sciences(PECL2018QN006)。 摘　　要：Anatase TiO_(2) is a promising anode material for lithium-ion batteries(LIBs)owing to its low cost and stability.However,the intrinsically kinetic limits seriously hindered its lithium-ion storage capability.Here we present that anatase TiO_(2) with rich oxygen vacancies can enhance its lithium-ion storage performance.We synthesize anatase TiO_(2) with well-retained hierarchical structure by annealing the H_(2)Ti_(5)O_(11)·3H_(2)O yolk-shell spheres precursor in nitrogen atmosphere.EPR and XPS data evidence that the oxygen-deficient environment could generate abundant oxygen vacancies in the as-derived anatase TiO_(2),which leads to improved electron conductivity and reduced charge-transfer resistance.The rich oxygen vacancies and high structural integrity of the hierarchical yolk-shell spheres enable the as-derived anatase TiO_(2) yolk-shell spheres with a high specific capacity of 280 mAh g^(-1) at 100 mA g^(-1) and 71%of capacity retention after 5000 cycles at 2 A g^(-1). 关 键 词：anatase TiO_(2) lithium-ion batteries oxygen vacancies yolk-shell spheres
相关文献

参考文献(52)

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