在乙醇预混合火焰中,以二茂铁作为催化剂前驱体、噻吩作为碳纳米管生长促进剂制备了3种不同形貌的碳纳米管薄膜,经过简单的煅烧氧化处理后,可将其用作钠离子电池的自支撑负极材料。采用X射线衍射仪、透射电子显微镜等表征手段对材料的结构和形貌进行分析,通过充放电性能测试分析其作为钠离子电池负极材料的电化学性能。结果表明:当催化剂注液速率为4.5mL/min时,样品中碳纳米管石墨化程度较高、能够团聚成管束状且能缠联成类似神经网络的碳纳米管网络,用作钠离子电池负极材料时,在50mA/g电流密度下充放电循环50圈后,仍可保持266.0mAh/g的放电比容量。
Three carbon nanotube(CNT) films with different morphologies were prepared using ferrocene as the catalyst precursor and thiophene as CNT growth promoter in the ethanol premixed flame.After simple calcination and oxidation treatment,they could be used as self-supporting anode material for sodium-ion battery.X-ray diffraction,transmission electron microscope,and other characterization methods were used to analyze the structure and morphology of the material,and the electrochemical performance of the negative electrode material of the sodium-ion battery was analyzed through the charge and discharge performance test.The results demonstrated that when the injection rate was 4.5mL/min,CNT in the sample was of good quality,and could be aggregated into a bundle of CNT,and could be entangled into the neural network-like CNT network.It showed better electrochemical performance in sodium-ion battery.And the discharge capacity was 266.0mAh/g when the electricity density was 50mA/g after 50 cycles.
[1] Tarascon J M,Armand M.Issues and challenges facing rechargeable lithium batteries[J].Nature,2001,414(6861):359-367.
[2] Vikström H,Davidsson S,Höök M.Lithium availability and future production outlooks[J].Applied Energy,2013,110:252-266.
[3] Li X,Zhao Y,Yao Q,et al,Encapsulating SnS2 nanosheets into hollow carbon sphere:ayolk-shell SnS2@C composite with enhanced sodium storage performance[J].Electrochimica Acta,2018,270:1-8.
[4] Delmas C.Sodium and sodium-ion batteries:50 years of research[J].Advanced Energy Materials,2018,8(17):1703137.
[5] Zhu Y,Wen Y,Fan X,et al.Red phosphorus-single-walled carbon nanotube composite as a superior anode for sodium-ion batteries[J].ACS Nano,2015,9(3):3254-3264.
[6] Chen B,Lu H,Zhou J,et al.Porous MoS2/carbon spheres anchored on 3D interconnected multiwall carbon nanotube networks for ultrafast Na storage[J].Advanced Energy Materials,2018,8(15):1702909.1-1702909.11.
[7] Yang Z,Wu X,Ma C,et al.Cu2SnSe3/CNTs composite as a promising anode material for sodium-ion batteries[J].Chemical Research in Chinese Universities,2020,36(1):91-96.
[8] He Y,Xu P,Zhang B,et al.Ultrasmall MnO nanoparticles supported on nitrogen-doped carbon nanotubes as efficient anode materials for sodium-ion batteries[J].ACS Applied Materials & Interfaces,2017,9(44):38401-38408.
[9] 王灏珉,何茂帅,张莹莹.碳纳米管薄膜的制备及其在柔性电子器件中的应用[J].物理化学学报,2019,35(11):1207-1223.
[10] Nishide H,Oyaizu K.Toward flexible batteries[J].Science,2008,319(5864):737-738.
[11] Kang C,Lahiri I,Baskaran R,et al.3-dimensional carbon nanotube for Li-ion battery anode[J].Journal of Power Sources,2012,219:364-370.
[12] Chen F,Jia Y,Wang Q,et al.Strong and super-hydrophobic hybrid carbon nanotube films with superior loading capacity[J].Carbon,2018,137:88-92.
[13] 边策,冯钠,陈茹,等.碳纳米管薄膜的制备及性能研究[J].化工新型材料,2018,46(8):81-84.
[14] Boccaccini A R,Cho J,Roether J A,et al.Electrophoretic deposition of carbon nanotubes[J].Carbon,2006,44(15):3149-3160.
[15] Díaz-Corona N,Martinez-Juarez J,Perez-Luna J G,et al.Structural,optical and electrical behavior of zinc oxide/MWCNT composite thin films[J].Optical and Quantum Electronics,2019,51(7):220.1-220.11.
[16] Haque A,Sachan R,Narayan J.Synthesis of diamond nanostructures from carbon nanotube and formation of diamond-CNT hybrid structures[J].Carbon,2019,150:388-395.
[17] 张亚玲,孙玉平,上媛媛.不同层数单壁碳纳米管薄膜柔性应变传感器的性能研究[J].人工晶体学报,2020,49(5):854-860.
[18] Yin L,Gao Y J,Jeon I,et al.Rice-panicle-like γ-Fe2O3@C nanofibers as high-rate anodes for superior lithium-ion batteries[J].Chemical Engineering Journal,2019,356:60-68.
[19] Chen Y Y,Hua X D,Evankoc B,et al.High-rate FeS2/CNT neural network nanostructure composite anodes for stable,high-capacity sodium-ion batteries[J].Nano Energy,2018,46:117-127.
[20] Liu T Y,Davijiani A A B,Sun J Y,et al.Hydrothermally oxidized single-walled carbon nanotube networks for high volumetric electrochemical energy storage[J].Small,2016,12:3423-3431.
基金资助
山西省科技重大专项(MC2015-04)
PDF
