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典型文献
Rational design of heterostructured core-shell Co-Zn bimetallic selenides for improved sodium-ion storage
文献摘要:
Bimetallic selenide with core-shell structure(CoSe2/ZnSe/NC@ZnSe/NC)has been successfully pre-pared through facile carbonization and selenization pro-cesses of its core-shell metal-organic framework precursors,in which the precursor is synthesized by epi-taxial growth of zinc-based zeolite imidazolate framework(ZIF-8)on the surface of cobalt-based and zinc-based zeolite imidazolate framework(ZIF-67@ZIF-8).The core-shell structure has the advantage of alleviating the volume expansion during repeated insertion and extraction of sodium ions which can effectively avoid structural col-lapse.Additionally,bimetallic selenides and heterostruc-ture are effective strategies to greatly improve the rate capability of the material.Therefore,the core-shell struc-tural CoSe2/ZnSe/NC@ZnSe/NC material can maintain the original dodecahedron structure and delivers a specific capacity of 308.6 mAh·g-1 at 1.0 A·g-1 after 300 cycles with the desirable capacity retention of 90%.With the synergistic effects of heterostructure and core-shell struc-ture,CoSe2/ZnSe/NC@ZnSe/NC exhibits better electro-chemical performance than CoSe2/ZnSe/NC and CoSe2/NC.These prove that both core-shell structure and heterostructure have positive effects on improving the electrochemical properties of materials.
文献关键词:
作者姓名:
Hua-Jian Liang;Xiao-Tong Li;Wen-Zhi Zheng;Zhi-Ting Liu;Wei Yang;Zi-Li Liu;Yu-Fei Zhang;Hao-Sen Fan;Sheng-Jun Lu
作者机构:
College of Materials Science and Metallurgy Engineering,Guizhou University,Guiyang 550025,China;School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China
引用格式:
[1]Hua-Jian Liang;Xiao-Tong Li;Wen-Zhi Zheng;Zhi-Ting Liu;Wei Yang;Zi-Li Liu;Yu-Fei Zhang;Hao-Sen Fan;Sheng-Jun Lu-.Rational design of heterostructured core-shell Co-Zn bimetallic selenides for improved sodium-ion storage)[J].稀有金属(英文版),2022(10):3381-3390
A类:
taxial
B类:
Rational,design,heterostructured,core,shell,bimetallic,selenides,improved,sodium,storage,Bimetallic,CoSe2,ZnSe,NC,has,been,successfully,pared,through,facile,carbonization,selenization,cesses,organic,framework,precursors,which,synthesized,by,epi,growth,zinc,zeolite,imidazolate,ZIF,surface,cobalt,advantage,alleviating,volume,expansion,during,repeated,insertion,extraction,ions,can,effectively,avoid,structural,col,lapse,Additionally,strategies,greatly,capability,Therefore,maintain,original,dodecahedron,delivers,specific,capacity,mAh,after,cycles,desirable,retention,With,synergistic,effects,exhibits,better,performance,than,These,that,both,have,positive,improving,electrochemical,properties,materials
AB值:
0.47344
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