基于ZIF-8的中空立方体的制备及锂离子电池应用
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摘要
材料的结构形貌对其应用起到至关重要的作用,中空结构因其独特的结构特征广泛应用于催化,气体储存,锂离子电池等领域。本文首先通过调控表面活性剂CTAB制备出大小一致的沸石咪唑骨架(ZIF-8)立方体,然后利用TEOS和多巴胺来固定立方体ZIF-8的形貌,接着通过退火以及刻饰的方法获得SiO_2@C的中空立方体结构。通过X射线衍射、扫描电镜、透射电镜等一系列表征方法可知,采用模板法制备出的SiO_2@C不仅在尺寸上保持大小的高度一致并且具有规则的立方体结构。作为中空结构在实际应用中的典型例子,将SiO_2@C作为模板制备出的中空SiO_2@C@MoS_2结构,具有优异的锂离子储存性能。在100 mA/g恒流充放电下循环100次后保持着930 mAh/g的放电比容量,且在此过程中充放电循环效率均在95%以上。
The zeolitic imidazolate framework(ZIF-8) hollow cubes,a novel template for fabrication of lithium ion battery,were synthesized via chemical route.The influence of the surfactant CTAB concentration on the micro/nano-structures and lithium ion storage behaviour of the SiO_2@C@MoS_2 hollow cubes,fabricated with the SiO_2@C template,was investigated with X-ray diffraction,scanning electron microscopy,transmission electron microscopy and electrochemical analysis.The results show that the surfactant CTAB concentration had a major impact.To be specific,the SiO_2@C had well-defined cubic structure with a narrow size distribution and the SiO_2@C@MoS_2 Li-ion battery demonstrated excellent Li-ion storage properties.For instance,tested at a constant current of 100 mA/g for 100 charge/discharge cycles,the Li-ion battery,made of newly-developed SiO_2@C@MoS_2 composite cubes,had a specific discharge capacity of 930 mAh/g and a charge/discharge cycling efficiency above 95%.
The zeolitic imidazolate framework(ZIF-8) hollow cubes,a novel template for fabrication of lithium ion battery,were synthesized via chemical route.The influence of the surfactant CTAB concentration on the micro/nano-structures and lithium ion storage behaviour of the SiO_2@C@MoS_2 hollow cubes,fabricated with the SiO_2@C template,was investigated with X-ray diffraction,scanning electron microscopy,transmission electron microscopy and electrochemical analysis.The results show that the surfactant CTAB concentration had a major impact.To be specific,the SiO_2@C had well-defined cubic structure with a narrow size distribution and the SiO_2@C@MoS_2 Li-ion battery demonstrated excellent Li-ion storage properties.For instance,tested at a constant current of 100 mA/g for 100 charge/discharge cycles,the Li-ion battery,made of newly-developed SiO_2@C@MoS_2 composite cubes,had a specific discharge capacity of 930 mAh/g and a charge/discharge cycling efficiency above 95%.
引文
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[2] Feng J,Yin Y,Self-Templating Approaches to Hollow Nanostructures[J].Advanced Materials,2018:e1802349
[3] Song H,Yang Y,Geng J,et al.Electron Tomography:A Unique Tool Solving Intricate Hollow Nanostructures[J].Advanced Materials,2018:e1801564
[4] Liu Y,Goebl J,Yin Y.Templated Synthesis of Nanostructured Materials[J].Chem Soc Rev,2013,42(7):2610-53
[5] Li Z,Wu H B,Lou X W.Rational Designs and Engineering of Hollow Micro-/Nanostructures as Sulfur Hosts for Advanced Lithium-Sulfur Batteries[J].Energy & Environmental Science,2016,9(10):3061-3070
[6] Wu Yuen,Wang Dingsheng,Li Yadong.Understanding of the Major Reactions in Solution Synthesis of Functional Nanomaterials[J].Science China Materials,2016,59(11):938-996
[7] Pan Y C,Heryadi D,Zhou F,et al.Tuning the Crystal Morphology and Size of Zeolitic Imidazolate Framework-8 in Aqueous Solution by Surfactants[J].Crystengcomm,2011,13(23):6937-6940
[8] Zhang X,Zhao Y Q,Xu C L,Surfactant Dependent Self-Organization of Co3O4 Nanowires on Ni Foam for High Performance Supercapacitors:from Nanowire Microspheres to Nanowire Paddy Fields[J].Nanoscale,2014,6(7):3638-3646
[9] Meng Fan-Lu,Wang Zhong-Li,Zhong Hai-Xia,et al.Reactive Multifunctional Template-Induced Preparation of Fe-N-Doped Mesoporous Carbon Microspheres Towards Highly Efficient Electrocatalysts for Oxygen Reduction[J].Advanced Materials,2016:n/a-n/a
[10] Civan Avci,Inhar Imaz,Arnau Carné-Sánchez,et al.Self-Assembly of Polyhedral Metal-Organic Framework Particles Into Three-Dimensional Ordered Superstructures[J].Nature Chemistry,2017
[11] Sun Yongming,Liu Nian,Cui Yi.Promises and Challenges of Nanomaterials for Lithium-Based Rechargeable Batteries[J].Nature Energy,2016,(1):16071
[12] Ji L W,Lin Z,Alcoutlabi M,et al.Recent Developments in Nanostructured Anode Materials for Rechargeable Lithium-Ion Batteries[J].Energy & Environmental Science,2011,4(8):2682-2699
[13] 李磊削,刘彦峰,王韫宇,等.锂电池中高比表面积的导电剂分散和ALD包覆性能优化[J].真空科学与技术学报,2017,37(5):519-526
[14] Hu Han,Zhang Jintao,Guan Buyuan,et al.Unusual Formation of CoSe@Carbon Nanoboxes,which Have an Inhomogeneous Shell,for Efficient Lithium Storage[J].Angewandte Chemie International Edition,2016,55(33):9514-9518
[15] Yu X Y,Yu L,Lou X W.Hollow Nanostructures of Molybdenum Sulfides for Electrochemical Energy Storage and Conversion[J].Small Methods,2017,1(1-2)
[16] 张浩,邓金祥,孔乐,等,β-Ga2O3纳米线的制备技术及其应用研究进展[J].真空科学与技术学报,2018,38(5):427-433
[17] Liu Y,Zhou X L,Ding T,et al.3D Architecture Constructed Via the Confined Growth of MoS2 Nanosheets in Nanoporous Carbon Derived from Metal-Organic Frameworks for Efficient Hydrogen Production[J].Nanoscale,2015,7(43):18004-18009
[18] Xia Y,Wang B B,Zhao X J,et al.Core-Shell Composite of Hierarchical MoS2 Nanosheets Supported on Graphitized Hollow Carbon Microspheres for High Performance Lithium-Ion Batteries[J].Electrochimica Acta,2016,187:55-64
[19] Yu Xin-Yao,Feng Yi,Jeon Yeryung,et al.Formation of Ni-Co-MoS2 Nanoboxes with Enhanced Electrocatalytic Activity for Hydrogen Evolution[J].Advanced Materials,2016,28(40):9006-9011
[20] Li Z Y,Ottmann A,Zhang T,et al.Preparation of Hierarchical C@MoS2@C Sandwiched Hollow Spheres for Lithium Ion Batteries[J].Journal of Materials Chemistry A,2017,5(8):3987-3994
[21] Tang R,Yin R Y,Zhou S J,et al.Layered MoS2 Coupled MOFs-Derived Dual-Phase TiO2 for Enhanced Photoelectrochemical Performance[J].Journal of Materials Chemistry,2017,A5(10):4962-4971
[22] 张伟冰,祝俊,王权.低温氧等离子体处理对单层二硫化钼薄膜表面性质影响的研究[J].真空科学与技术学报,2017,37(10):1003-1007
[23] Nai J,Lou X W D.Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion[J].Adv Mater,2018:e1706825
[24] Zhu W,Chen Z,Pan Y,et al.Functionalization of Hollow Nanomaterials for Catalytic Applications:Nanoreactor Construction[J].Adv Mater,2018:e1800426
[25] Li B,Zeng H C.Architecture and Preparation of Hollow Catalytic Devices[J].Adv Mater,2018:e1801104