Sieving carbons promise practical anodes with extensible low-potential plateaus for sodium batteries

查看全文 作　　者：Qi [1,2,4]Li;Xiangsi [3]Liu;Ying [1,4]Tao;Jianxing [3]Huang;Jun [1,2,4]Zhang;Chunpeng [1,4]Yang;Yibo [1,4]Zhang;Siwei [5]Zhang;Yiran [1,4]Jia;Qiaowei [5]Lin;Yuxuan [3]Xiang;Jun [3]Cheng;Wei [5]Lv;Feiyu [5]Kang;Yong [3]Yang;Quan-Hong [1,2,4]Yang

机构地区：[1]Nanoyang Group,State Key Laboratory of Chemical Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China;[2]Nanoyang Group,Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,China;[3]State Key Laboratory of Physical Chemistry of Solid Surfaces,Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China:;[4]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China;[5]Shenzhen Key Laboratory for Graphene-Based Materials,Engineering Laboratory for Functionalized Carbon Materials,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China

出　　处：《National Science Review》索引2022年第9卷第8期,共9页

基　　金：supported by the National Natural Science Foundation of China(51872195 and 21935009);the Project Funded by the China Postdoctoral Science Foundation(2020TQ0225);the National Key Research and Development Program of China(2016YFB0901502);the National Science Fund for Distinguished Young Scholars of China(51525204)。 摘　　要：Non-graphitic carbons are promising anode candidates for sodium-ion batteries,while their variable and complicated microstructure severely limits the rational design of high-energy carbon anodes that could accelerate the commercialization of sodium-ion batteries,as is the case for graphite in lithium-ion batteries.Here,we propose sieving carbons,featuring highly tunable nanopores with tightened pore entrances,as high-energy anodes with extensible and reversible low-potential plateaus(<0.1 V).It is shown that the tightened pore entrance blocks the formation of the solid electrolyte interphase inside the nanopores and enables sodium clustering to produce the plateau.Theoretical and spectroscopic studies also show that creating a larger area of sodiophilic pore surface leads to an almost linearly increased number of sodium clusters,and controlling the pore body diameter guarantees the reversibility of sodium cluster formation,producing a sieving carbon anode with a record-high plateau capacity of 400 mAh g.More excitingly,this approach to preparing sieving carbons has the potential to be scalable for modifying different commercial porous carbons. 关键词：sodium-ion batteries sieving carbons low-potential plateau pore entrance diameter pore surface area

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Sieving carbons promise practical anodes with extensible low-potential plateaus for sodium batteries

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