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采用水热法制备了Zn_2GeO4/MXene复合材料,以Zn_2GeO4/MXene复合材料作为负极材料组装了钠离子电池,并对钠离子电池的电化学性能进行了分析和研究。测试结果表明在100 mA·g-1的电流密度下,100圈充放电循环后,Zn_2GeO4/MXene复合材料作为负极的钠离子电池的库仑效率为99%,比容量为75 mA·h·g-1,是纯Zn_2GeO4的2倍。研究结果表明,MXene的加入不仅有利于减少Zn_2GeO4材料的团聚和在循环过程中的分解,而且有效缓解了充放电过程中Zn_2GeO4材料的体积膨胀,有利于提升复合材料的界面稳定性。同时,MXene层间丰富的官能团也为Na+的嵌入提供了更多的活性位点,对Na+的存储表现出协同增强作用,从而提高了复合材料的电化学性能。该研究结果有助于钠离子电池负极材料的研究和应用。
Abstract：Zn_2GeO4/MXene composite material was prepared by hydrothermal method. The Zn_2GeO4/MXene composite material was used as the anode material to assemble sodium ion battery, and electrochemical performance of the sodium ion battery was analyzed and studied. At a current density of 100 m A·g-1 after 100 charge and discharge cycles, the coulombic efficiency of the sodium ion battery with Zn_2GeO4/MXene composite material as anode is 99%, and a specific capacity is 75 mA·h·g-1, which is twice that of pure Zn_2GeO4. The study results show that the addition of MXene is conducive to reducing the agglomeration and decomposition of Zn_2GeO4 material during the cycle process, and effectively alleviates the volume expansion of Zn_2GeO4 material during the charge and discharge process, which is beneficial to improve the interface stability of the composite material. Meanwhile, the rich functional groups between MXene layers also provide more active sites for the insertion of Na+, which shows a synergistic enhancement effect on the storage of Na+, thus improving the electrochemical performance of the composite material. The study results are helpful to the research and application of anode material for sodium ion battery.
[1]NAYAK P K,YANG L T,BREHM W,et al.From lithium-ion to sodium-ion batteries:advantages,challenges,and surprises[J].Angewandte Chemie International Edition,2018,57(1):102-120.
[2]CHAYAMBUKA K,MULDER G,DANILOV L,et al.From Li-ion batteries toward Na-ion chemistries:challenges and opportunities[J].Advanced Energy Materials,2020,10(38):2001310.
[3]CLAUDE D.Sodium and sodium-ion batteries:50 years of research[J].Advanced Energy Materials,2018,8(17):1703137.
[4]陈美丽,袁皓文,孙姝纬表面化学沉积Mn O2对O3-Na Ni0.5Mn0.5O2正极材料结构及性能影响[J].化学研究,2022,33(1):26-31.
[5]LIM R,JUNG C S,IM H S,et al.Zn2Ge O4 and Zn2Sn O4 nanowires for high-capacity lithium-and sodium-ion batteries[J].Journal of Materials Chemistry:A,2016,4(27):10691-10699.
[6]叶飞鹏,王莉,连芳,等钠离子电池研究进展[J].化工进展,2013,32(8):1789-1795.
[7]LI W,YIN X,XIN S,et al.Low-cost and large-scale synthesis of alkaline earth metal germanate nanowires as new class of lithium ion battery anode material[J].Energy Environmental Science,2012,5(7):8007-8013.
[8]FENG K,LAI M O,LU L.Zn2Ge O4 nanorods synthesized by low-temperature hydrothermal growth for high-capacity anode of lithium battery[J].Electrochemistry Communications,2011,13(3):287-289.
[9]YI R,FENG K,LV D P,et al.Amorphous Zn2Ge O4nanoparticles as anodes with high reversible capacity and long cycling life for Li-ion batteries[J].Nano Energy,2013,2(4):498-504.
[10]CHEN Z,YAN Y,XIN S,et al.Copper germanate nanowire/reduced graphene oxide anode materials for high energy lithium-ion batteries[J].Journal of Materials Chemistry:A,2013,1(37):11404-11409.
[11]ZHANG F,ZHANG H,ZHANG Z,et al.Hydrothermal growth of cobalt germanate/reduced graphene oxide nanocomposite as superior anode materials for lithium-ion batteries[J].Electrochimica Acta,2014,150:211-217.
[12]ZOU F,HU L,QIE L,et al.Facile synthesis of sandwiched Zn2Ge O-4graphene oxide nanocomposite as stable and high-capacity anode for lithium-ion batteries[J].Nanoscale,2014,6(2):924-930.
[13]LI D,FENG Y,LI M C,et al.Smart hybrids of Zn2Ge O4nanoparticles and ultrathin g-C3N4 layers:synergistic lithium storage and excellent electrochemical perfor-mance[J].Advanced Functional Materials,2015,25(44):6858-6866.
[14]LI L,ZHANG Z P,GE X,et al.Enhanced electrochemical properties of carbon coated Zn2Ge O4 micron-rods as anode materials for sodium-ion batteries[J].Chemical Engineering Journal,2018,331:203-210.
[15]NAGUIB M,KURTOGLU M,PRESSER V,et al.Twodimensional nanocrystals produced by exfoliation of Ti3Al C2[J].Advanced Materials,2011,23(37):4248-4253.
[16]HUANG J,LI T F,LIU Q L,et al.Fluorine-free Ti3C2Tx as anode materials for Li-ion batteries[J].Electrochemistry Communications,2019,104:106472.
[17]WU T,NIE P,WU L Y,et al.2D MXene/Sn S2 composites as high-performance anodesfor sodium ion batteries[J].Chemical Engineering Journal,2018,334:932-938.
[18]LIU R,CAO K,HAN D M,et al.Nitrogen-doped Nb2CTx MXene as anode materials for lithium ion batteries[J].Journal of Alloys and Compounds,2019,793:505-511.
[19]NAN X,GUO X,XIAO J,et al.Nanoengineering of 2DMXene-based materials for energy storage applications[J].Small,2021,17(9):1902085
[20]LI F,YAO L L,LIU Q L,et al.Fluorine-free synthesis of high-purity Ti3C2Tx(T=OH,O) via alkali treatment[J].Angewandte Chemie International Edition,2018,57(21):6115-6119.
[21]KIM H,KIM I,YOON W S.Challenges and design strategies for conversion-based anode materials for lithiumand sodium-ion batteries[J].Journal of Electrochemical Science and Technology,2022,13(1):32-53.
[22]DU M,LI H,CHEN X W,et al.Recent research progress of silicon-based anode materials for lithium-ion batteries[J].ChemistrySelect,2022,7(19):e202201269.
基本信息:
DOI：10.13250/j.cnki.wndz.24010303
中图分类号:TM912;TB332
引用信息:
[1]尹惠,关石磊,古凌云,等.Zn_2GeO_4/MXene材料作为钠离子电池负极的性能[J].微纳电子技术,2024,61(01):76-82.DOI:10.13250/j.cnki.wndz.24010303.
2024-01-08
2024-01-08
2024-01-08