MoO2/C纳米纤维复合薄膜的电化学性能
Electrochemical Performance of MoO2/C Nanofiber Composite Film
摘 要
通过静电纺丝法制备了MoO2/C纳米纤维复合薄膜，其中钼酸铵与纯聚乙烯醇（AMT与PVA）质量比分别为1：9，2：8，3：7，4：6，研究了薄膜的组织结构和相应电极的电化学性能。结果表明：随着AMT与PVA质量比增加，MoO2/C纳米纤维复合薄膜的纤维尺寸减小且分布更均匀，纤维成丝效果改善，相应电极的比电容增大，循环性能增强；AMT与PVA质量比为4∶6时，薄膜纤维成丝效果最好，相应电极在充放电循环过程中具有良好的结构稳定性；且5 000次充放电后的循环保持率、充电比容量、放电比容量及充放电效率均增加，循环性能优异。
MoO2/C纳米纤维复合薄膜
电化学性能
electrospinning
MoO2/C nanofiber composite film
electrochemical property
Abstract
MoO2/C nanofiber composite films were prepared by electrospinning with mass ratios of ammonium molybdate (AMT) to pure polyvinyl alcohol (PVA) of 1:9,2:8,3:7;4:6, repectively. The microstructure of the film and electrochemical property of the corresponding electrode were studied. The results show that with increasing AMT to PVA mass ratio, the fiber size of MoO2/C nanofiber composite film decreased, the fiber distribution became uniform, and the filament forming effect was improved. Moreover, the specific capacitance of the corresponding electrode increased, and the cycle performance was enhanced. When the AMT to PVA mass ratio was 4∶6, the filament forming effect of the film was the best, and the corresponding electrode had good structural stability in the charge and discharge cyclic process. Meanwhile its cycle retention rate, charge specific capacity, discharge specific capacity and charge-discharge efficiency all increased after 5 000 charge-discharge cycles, and the cycle performance was excellent.
中图分类号 TB33 DOI 10.11973/jxgccl202106004
所属栏目 试验研究
基金项目 国家自然科学基金资助项目（51801133）；山西省青年科学基金资助项目（201801D221135）；山西省科技重大专项（20181102013）；山西省“1331工程”项目（PT201801）
收稿日期 2020/1/5
修改稿日期 2020/12/24
网络出版日期
作者单位点击查看
备注高邦(1994-),男,云南昭通人,硕士研究生
引用该论文: GAO Bang,LIU Ying,HE Zhiyong,YU Shengwang,MENG Jie,MA Yong,ZHOU Bing,WU Yanxia. Electrochemical Performance of MoO2/C Nanofiber Composite Film[J]. Materials for mechancial engineering, 2021, 45(6): 20～25
高邦,刘颖,贺志勇,于盛旺,孟杰,马永,周兵,吴艳霞. MoO2/C纳米纤维复合薄膜的电化学性能[J]. 机械工程材料, 2021, 45(6): 20～25
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参考文献
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【2】QIU S,LU G X,LIU J R,et al.Enhanced electrochemical performances of MoO2 nanoparticles composited with carbon nanotubes for lithium-ion battery anodes[J].RSC Advances,2015,5(106):87286-87294.
【3】XIE X,LIN L,LIU R Y,et al.The synergistic effect of metallic molybdenum dioxide nanoparticle decorated graphene as an active electrocatalyst for an enhanced hydrogen evolution reaction[J].Journal of Materials Chemistry A,2015,3(15):8055-8061.
【4】ZHOU Y,LIU Q,LIU D B,et al.Carbon-coated MoO2 dispersed in three-dimensional graphene aerogel for lithium-ion battery[J].Electrochimica Acta,2015,174:8-14.
【5】LUO W,HU X L,SUN Y M,et al.Electrospinning of carbon-coated MoO2 nanofibers with enhanced lithium-storage properties[J].Physical Chemistry Chemical Physics,2011,13(37):16735-16740.
【6】LIU B Y,SHAO Y F,ZHANG Y L,et al.Highly efficient solid-state synthesis of carbon-encapsulated ultrafine MoO2 nanocrystals as high rate lithium-ion battery anode[J].Journal of Nanoparticle Research,2016,18(12):1-10.
【7】XIANG J,WU Z P,ZHANG X K,et al.Enhanced electrochemical performance of an electrospun carbon/MoO2 composite nanofiber membrane as self-standing anodes for lithium-ion batteries[J].Materials Research Bulletin,2018,100:254-258.
【8】GAO H,LIU C L,LIU Y,et al.MoO2-loaded porous carbon hollow spheres as anode materials for lithium-ion batteries[J].Materials Chemistry and Physics,2014,147(1/2):218-224.
【9】DEVINA W,HWANG J,KIM J.Synthesis of MoO2/Mo2C/RGO composite in supercritical fluid and its enhanced cycling stability in Li-ion batteries[J].Chemical Engineering Journal,2018,345:1-12.
【10】HERCULE K M,WEI Q L,KHAN A M,et al.Synergistic effect of hierarchical nanostructured MoO2/Co(OH)2 with largely enhanced pseudocapacitor cyclability[J].Nano Letters,2013,13(11):5685-5691.
【11】LI X Y,XIAO Q G,GAO Y Y,et al.Hierarchical MoO2/C microspheres:Preparation and application as anode materials for lithium ion batteries[J].Journal of Alloys and Compounds,2017,723:1113-1120.
【12】XIA G L,LIU D,ZHENG F C,et al.Preparation of porous MoO2@C nano-octahedrons from a polyoxometalate-based metal-organic framework for highly reversible lithium storage[J].Journal of Materials Chemistry A,2016,4(32):12434-12441.
【13】BHASKAR A,DEEPA M,NARASINGA RAO T.MoO2/multiwalled carbon nanotubes (MWCNT) hybrid for use as a Li-ion battery anode[J].ACS Applied Materials & Interfaces,2013,5(7):2555-2566.
【14】TANG Q W,SHAN Z Q,WANG L,et al.MoO2-graphene nanocomposite as anode material for lithium-ion batteries[J].Electrochimica Acta,2012,79:148-153.
【15】WANG C L,SUN L S,ZHANG F F,et al.Formation of Mo-polydopamine hollow spheres and their conversions to MoO2/C and Mo2C/C for efficient electrochemical energy storage and catalyst[J].Small,2017,13(32):1701246.
【16】ZHU Y P,WANG S F,ZHONG Y J,et al.Facile synthesis of a MoO2-Mo2C-C composite and its application as favorable anode material for lithium-ion batteries[J].Journal of Power Sources,2016,307:552-560.
【17】GONG Z B,SHI J,ZHANG B,et al.Graphene nano scrolls responding to superlow friction of amorphous carbon[J].Carbon,2017,116:310-317.
【18】TAMOR M A,VASSELL W C.Raman "fingerprinting" of amorphous carbon films[J].Journal of Applied Physics,1994,76(6):3823-3830.
【19】WANG S Q,HE J H,XU L.Non-ionic surfactants for enhancing electrospinability and for the preparation of electrospun nanofibers[J].Polymer International,2008,57(9):1079-1082.
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【22】SAHOO S, NGUYEN T T, SHIM J J. Mesoporous Fe-Ni-Co ternary oxide nanoflake arrays on Ni foam for high-performance supercapacitor applications[J]. Journal of Industrial and Engineering Chemistry, 2018, 63(28):181-190.
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