| 1,052 | 21 | 42 |
| 下载次数 | 被引频次 | 阅读次数 |
采用高能球磨法制备了纳米硅/石墨烯(Si@G)复合锂离子电池负极材料,并研究了高能球磨时间对Si@G复合材料成分和电化学性能的影响。X射线衍射分析结果表明:球磨40 min后,产物中出现少量电化学惰性的碳化硅。球磨20 min的Si@G复合材料具有最高的首次放电比容量(3 418 mA?h/g)和首次Coulomb效率(89%),但其充放电循环稳定性较差,放电比容量在33次充放电后即衰减为首次的80%。而球磨40 min的Si@G复合材料,充放电84次后,其容量保持率仍为80%。表明没有储锂容量的杂质相SiC虽然导致Si@G负极材料的首次充放电比容量下降,但有利于提高充放电循环稳定性。
Abstract：Silicon/graphene composites(Si@G) anode materials for lithium-ion battery were prepared via high-energy ball milling. The effect of milling time on the composition and electrochemical performance of Si@G composites was investigated. Based on the analysis by X-ray diffraction, a small amount of electrochemically inert silicon carbide(SiC) is formed at milling time of 40 min. The Si@G composite produced by miling for 20 min has the optimum initial specific discharge capacity(i.e., 3 418 m A?h/g) and the first coulombic efficiency(i.e., 89%), with 80% of the initial specific discharge capacity retained after 33 charge–discharge cycles. The Si@G composite produced by milling for 40 min is charged and discharged for 84 times, and its capacity retention rate is still 80%. This indicates that SiC shows no lithium storage capacity, resulting in a decrease in the first specific charge–discharge capacity. However, SiC can improve the cycling stability of Si@G composite anode materials.
[1] DEDRYVèRE R, FOIX D, FRANGER S, et al. Electrode/electrolyte interface reactivity in high-voltage spinel LiMn1.6Ni0.4O4/Li4Ti5O12lithium-ion battery[J]. J Phys Chem C, 2017, 114(24):10999–11008.
[2] CHEN T, WU J, ZHANG Q, et al. Recent advancement of SiOx based anodes for lithium-ion batteries[J]. J Power Sources, 2017, 363:126–144.
[3] YANG Z, XIA Y, JI J, et al. Superior cycling performance of a sandwich structure Si/C anode for lithium ion batteries[J]. RSC Adv,2016, 6(15):12107–12113.
[4] KULOVA T L, SKUNDIN A M. Elimination of irreversible capacity of amorphous silicon:Direct contact of the silicon and lithium metal[J].Russ J Electrochem, 2010, 46(4):470–475.
[5] XU B, ZHANG J, GU Y, et al. Lithium-storage properties of gallic acid-reduced graphene oxide and silicon-graphene composites[J].Electrochim Acta, 2016, 212:473–480.
[6] CHEN Y, HU Y, SHEN Z, et al. Sandwich structure of graphene-protected silicon/carbon nanofibers for lithium-ion battery anodes[J]. Electrochim Acta, 2016, 210:53–60.
[7] DIMOV N, KUGINO S, YOSHIO M. Mixed silicon-graphite composites as anode material for lithium ion batteries—Influence of preparation conditions on the properties of the material[J]. J Power Sources, 2004, 136(1):108–114.
[8] YIN S, JI Q, ZUO X, et al. Silicon lithium-ion battery anode with enhanced performance:Multiple effects of silver nanoparticles[J]. J Mater Sci Technol, 2018, 34(10):1902–1911.
[9] HIGGINS T M, PARK S H, KING P J. A commercial conducting polymer as both binder and conductive additive for silicon nanoparticle-based lithium-ion battery negative electrodes[J]. ACS Nano, 2016, 10(3):3702–3713.
[10]吴永康,傅儒生,刘兆平,等.锂离子电池硅氧化物负极材料的研究进展[J].硅酸盐学报, 2018, 46(11):1645–1652.WU Yongkang, FU Rusheng, LIU Zhaoping, et al. J Chin Ceram Soc,2018, 46(11):1645–1652.
[11] ZHOU X, YIN Y X, WAN L J, et al. Facile synthesis of silicon nanoparticles inserted into graphene sheets as improved anode materials for lithium-ion batteries[J]. Chem Commun, 2012, 48(16):2198–2200.
[12] JIN Y, TAN Y, HU X, et al. Scalable production of silicon-tin yin-yang hybrid structure with graphene coating for high performance lithium ion battery anodes[J]. ACS Appli Mater Inter, 2017, 9(18):15388–15393.
[13]彭鹏,刘宇,温兆银.锂离子电池Si/C/石墨复合负极材料的电化学性能[J].无机材料学报, 2013, 28(11):1195–1199.PENG Peng, LIU Yu, WEN Zhaoyin. J Inorg Mater(in Chinese), 2013,28(11):1195–1199.
[14] YANG Y X, XU Z Z, JIANG X H, et al. High-efficiency and broadband four-wave mixing in a silicon-graphene strip wave guide with a windowed silica top layer[J]. Photon Res, 2018, 6(10):91–96.
[15] MARONI F, RACCICHINI R, BIRROZZI A, et al. Graphene/silicon nanocomposite anode with enhanced electrochemical stability for lithium-ion battery applications[J]. J Power Sources, 2014, 269(1):873–882.
[16] ZHANG Y J, CHU H, YUAN L F, et al. Review of Si/graphene nanocomposites as anode materials for Li-ion batteries[J]. Chin J Power Sources, 2018, 42(1):143–146.
[17] HU R, SUN W, CHEN Y, et al. Silicon/graphene based nanocomposite anode:Large-scale production and stable high capacity for lithium ion batteries[J]. J Mater Chem A, 2014, 2(24):9118–9125.
[18] GAN L, GUO H, WANG Z, et al. A facile synthesis of graphite/silicon/graphene spherical composite anode for lithium-ion batteries[J]. Electrochim Acta, 2013, 104:117–123.
[19] SEO Y K, KIM Y W, NISHIMURA T, et al. High-temperature strength of a thermally conductive silicon carbide ceramic sintered with yttria and scandia[J]. J Eur Ceram Soc, 2016, 36(15):3755–3760.
[20] LUO Y, ZHENG S L, MA S H, et al. Mullite-bonded SiC-whisker-reinforced SiC matrix composites:Preparation,characterization, and toughening mechanisms[J]. J Eur Ceram Soc,2018, 38(16):5282–5293.
[21] TAMAYO A, RUBIO F, ALEJANDRA M, et al. Further characterization of the surface properties of the SiC particles through complementarity of XPS and IGC-ID techniques[J]. Boletín de la Sociedad Espa?ola de Cerámica y Vidrio, 2018, 57(6):231–239.
[22]杜莉莉,庄全超,魏涛,等. Si/C复合材料电极首次嵌锂过程的电化学阻抗谱研究[J].化学学报, 2011, 69(22):2641–2647.DU Lili, ZHUNAG Quanchao, WEI Tao, et al. Acta Chim Sin(in Chinese), 2011, 69(22):2641–2647.
基本信息:
DOI：10.14062/j.issn.0454-5648.2019.09.20
中图分类号:TM912
引用信息:
[1]肖思,谢旭佳,谢雍基,等.锂离子电池硅/石墨烯负极材料的电化学性能[J].硅酸盐学报,2019,47(09):1327-1334.DOI:10.14062/j.issn.0454-5648.2019.09.20.
基金信息:
国家自然科学基金重点项目(21673051);; 广东省科技厅产学研重大专项(2017B010119003)
2019-01-07
2019
2019-07-09
2019
2019-07-10
1
2019-07-10
2019-07-10
2019-07-10