铝作为负极材料其理论容量较高,但铝在充放电过程中会出现严重的体积膨胀,导致循环性能差。为克服铝体积膨胀严重的缺点,采用简单的球磨法成功制备出铝/石墨复合材料。利用X射线衍射仪、扫描电子显微镜对复合材料的结构和形貌进行分析。电化学性能测试表明,铝/石墨复合材料首次放电比容量高达1004mAh/g,循环15次后容量保持在300mAh/g。铝/石墨复合材料拥有较高的放电比容量和较好的循环性能,在锂离子电池负极材料中具有潜在的应用价值。
Al has the advantages of high specific capacity as cathode materials,but in the process of charging and discharging,the volume expansion of Al is too large,resulting in poor looping performance.Al/graphite composite materials were successfully prepared by ball milling,and then the phase structure and characterization of the morphology were analyzed by X-ray diffractometer (XRD) and electron microscope (SEM) respectively.The electrochemical measurements demonstrated that the composites had great improved electrochemical performances in comparison with pure Al.For example,the initial discharge capacity was 1004mAh/g,and can deliver the reversible capacity of 300mAh/g after 15th cycle.This suggested that the Al/graphite composite had a potential possibility to be developed as cathode materials for lithium-ion batteries.
[1] Li Xiaolin,Yan Pengfei,Xiao Xingcheng,et al.Design of porous Si/C-graphite electrodes with long cycle stability and controlled swelling[J].Energy Environ Sci,2017,10(6):1427-1434.
[2] Liu Qianqian,Du Chunyu,Shen Bin,et al.Understanding undesirable anode lithium plating issues in lithium-ion batteries[J].RSC Adv,2016,6(91):88683-88700.
[3] Martin Halim,Chairul Hudaya,Kim A-Young,et al.Phenyl-rich silicone oil as a precursor for SiOC anode materials for long-cycle and high-rate lithium ion batteries[J].J Mater Chem A,2016,4(7):2651-2656.
[4] Huang Youguo,Pan Qichang,Wang Hongqiang,et al.Preparation of a Sn@SnO2@C@MoS2 composite as a high-performance anode material for lithium-ion batteries[J].J Mater Chem A,2016,4(19):7185-7189.
[5] Wan Zhongming,Sha Jie,Yun Jiaojiao,et al.Core-shell structure of hierarchical quasi-hollow MoS2 microspheres encapsulated porous carbon as stable anode for Li-ion batteries[J].Small,2014,10(23):4975-4981.
[6] Li Qingyu,Pan Qichang,Yang Guanhua,et al.Synthesis of Sn/MoS2/C composites as highperformance anodes for lithium-ion batteries[J].J Mater Chem A,2015,3(40):20375-2038.
[7] Ghannoum Abdul Rahman,Norris Ryan C,Iyer Krishna,et al.Optical characterization of commercial lithiated graphite battery electrodes and in situ fiber optic evanescent wave spectroscopy[J].ACS Appl Mater Interfaces,2016,8(29):18763-18769.
[8] 吴国良.锂离子电池负极材料的现状与发展[J].电池,2001,31(2):55-59.
[9] Seong-Hyo Park,Hyeon Jin Kim,Lee Junmin,et al.Mussel-inspired polydopamine coating for enhanced thermal stability and rate performance of graphite anodes in Li-ion batteries[J].ACS Appl Mater Interfaces,2016,8(22):13973-13981.
[10] Sarang M B,Chen Yuming,Guo Yuanhao,et al.Hierarchical electrospun and cooperatively assembled nanoporous Ni/NiO/MnOx/carbon nanofiber composites for lithium ion battery anodes[J].ACS Appl Mater Interfaces,2016,8(30):19484-19493.
[11] Zhang Hongwei,Sun Xiaoran,Huang Xiaodan,et al.Encapsulation of α-Fe2O3 nanoparticles in graphitic carbon microspheres as high-performance anode materials for lithium-ion batteries[J].Nanoscale,2015,7(7):3270-3275.
[12] Lv Xiaoxin,Deng Jiujun,Wang Jian,et al.Carbon-coated α-Fe2O3 nanostructures for efficient anode of Li-ion battery[J].J Mater Chem A,2015,3(9):5183-5188.
[13] Noriyuki T,Ryuji O,Masahisa F,et al.Study on the anode behavior of Sn and Sn-Cu alloy thin-film electrodes[J].J Power Sources,2002,107(1):45-48.
[14] Hamon Y,Brousse T,Jousse F,et al.Aluminum negative electrode in lithium ion batteries[J].J Power Sources,2001,97(98):185-187.
[15] Lei Xuefeng,Wang Chiwei,Yi Zonghui,et al.Effects of particle size on the electrochemical properties of aluminum powders as anode materials for lithium ion batteries[J].J Alloy and Compd,2007,429(1/2):311-315.
[16] Zhou Wenchao,Shailesh Upreti,Whittingham M Stanley,et al.Electrochemical performance of Al-Si-graphite composite as anode for lithium-ion batteries[J].Electrochem Commun,2011,13(2):158-161.
[17] Lei Xuefeng,Ma Junxian.Co3O4 coated Al composites as anode materials for lithium ion batteries[J].Mater Chem and Phys,2009,116(2/3):383-387.
[18] Ji Hun Park,Chairul Hudaya,Kim A-Young,et al.Al-C hybrid nanoclustered anodes for lithium ion batteries with high electrical capacity and cyclic stability[J].Chem Commun,2014,50(22):2837-2840.
[19] Li Qingyu,Pan Qichang,Yang Guanhua,et al.Facile synthesis of a novel Al-based composite as an anode for lithium-ion batteries[J].RSC Adv,2015,5(104):85338-85343.
[20] Daniele Di Lecce,Roberta Verrelli,Jusef Hassoun,et al.Lithium-ion batteries for sustainable energy storage:recent advances towards new cell configurations[J].Green Chem,2017,19(15):3442-3467.
基金资助
广西科学研究与技术开发计划(20150106-3,桂科攻1598008-14,桂科AA16380042);国家自然科学基金(51364004)
PDF
(3533KB)
