微乳液法制备氧化铜阵列应用于钠离子电池
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摘要
采用微乳液法制备了氧化铜纳米阵列,应用于钠离子电池负极。氧化铜阵列结构直接生长于导电铜片上,有利于电子传输、加快电化学反应速率,且氧化铜阵列结构存在开放空间,当进行充放电测试时,氧化铜纳米阵列可以为钠离子嵌入脱出引起的体积膨胀提供缓冲作用,显著提高电池在高倍率下的循环性能与倍率性能。
CuO arrays was synthesized on copper foils by microemulsion method. The CuO array films were directly employed as anode electrodes for sodium-ion batteries. The open space between CuO nanoarrays not only allowed for diffusion of electrolyte into the inner region of materials, but also could provide ample spaces to sustain the volume change associated with sodium insertion/extraction during charge and discharge tests. The CuO array films show good contact between the arrays and the current collecting substrates, thus exhibiting better rate performance and enhanced cycling life.
CuO arrays was synthesized on copper foils by microemulsion method. The CuO array films were directly employed as anode electrodes for sodium-ion batteries. The open space between CuO nanoarrays not only allowed for diffusion of electrolyte into the inner region of materials, but also could provide ample spaces to sustain the volume change associated with sodium insertion/extraction during charge and discharge tests. The CuO array films show good contact between the arrays and the current collecting substrates, thus exhibiting better rate performance and enhanced cycling life.
引文
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[2]XIA X,CHAO D,ZHANG Y,et al.Generic synthesis of carbon nanotube branches on metal oxide arrays exhibiting stable high-rate and long-cycle sodium-ion storage[J].Small,2016,12(22):3048-3058.
[3]LIU Y,QIAO Y,ZHANG W X,et al.Facile fabrication of CuO nanosheets on Cu substrate as anode materials for electrochemical energy storage[J].Journal of Alloys and Compounds,2014,586:208-215.
[4]LU Y,ZHANG N,ZHAO Q,et al.Micro-nanostructured CuO/Cspheres as high-performance anode materials for Na-ion batteries[J].Nanoscale,2015,7(6):2770-2776.
[5]陈宗能.微乳液在无机材料制备中的应用[J].山东工业技术,2015(20):1.
[6]贺兴.乳液沉淀法制备纳米材料[D].重庆:重庆大学,2015.
[7]CAO X,TAN C,ZHANG X,et al.Solution-processed two-dimensional metal dichalcogenide-based nanomaterials for energy storage and conversion[J].Adv Mater,2016,28(29):6167-6196.
[8]KE F S,HUANG L,WEI G Z,et al.One-step fabrication of CuOnanoribbons array electrode and its excellent lithium storage performance[J].Electrochimica Acta,2009,54(24):5825-5829.
[9]CHEN C C,DONG Y Y,LI S Y,et al.Rapid synthesis of threedimensional network structure CuO as binder-free anode for highrate sodium ion battery[J].Journal of Power Sources,2016,320:20-27.
[10]WANG G L,HUANG J C,CHEN S L,et al.Preparation and supercapacitance of CuO nanosheet arrays grown on nickel foam[J]Journal of Power Sources,2011,196(13):5756-5760.