Improving electrochemical performance of spherical LiMn2O4 cathode materials for lithium ion batteries by Al-F codoping and AlF3 surface coating
Tóm tắt
In this paper, combination of both codoping and coating with Al, F compounds on spherical LiMn2O4 is studied to obtain an improved charge/discharge cycling performance. Firstly, Al, F-codoped Li-Mn-spinel compounds (LiMn1.96Al0.04O3.94F0.06) are synthesized via solid-state reaction followed by high-temperature treatment. The Al-F codoping spherical LiMn2O4 particles with uniform sizes of about 15 μm have high crystallinity and high tap density. The doped LiMn2O4 significantly improves the cycling performance and rate capability at room temperature. On the basis of codoped LiMn2O4, the AlF3 coating with LiMn1.96Al0.04O3.94F0.06 materials is prepared to further improve the cycling performance and rate capability at elevated temperature. Compared with pristine LiMn1.96Al0.04O3.94F0.06, the coated LiMn1.96Al0.04O3.94F0.06 shows no obvious changes on crystal structure as well as microstructure. The capacity retentions delivered by the coated samples are enhanced remarkably compared to those of the pristine one, especially at elevated temperature. It is proved that the 1 mol% AlF3-coated LiMn1.96Al0.04O3.94F0.06 shows not only improved capacity retention but also an acceptable initial capacity. At 0.5C rate, the bare and 1 mol%-coated samples have their respective capacity retentions of 86.4 and 92 % after 50 cycles at 55 °C. Meanwhile, the 1 mol% AlF3-coated LiMn1.96Al0.04O3.94F0.06 exhibits excellent rate capability at 4C and 6C at 55 °C.
Tài liệu tham khảo
Tarascon J-M, Armand M (2001) Nature 414(6861):359–367
Armand M, Tarascon J-M (2008) Nature 451(7179):652–657
Scrosati B, Garche J (2010) J Power Sources 195(9):2419–2430
Manthiram A (2011) J Phys Chem Lett 2(3):176–184
Liu Y, Li X, Guo H, Wang Z, Hu Q, Peng W, Yang Y (2009) J Power Sources 189(1):721–725
Liu Q, Mao D, Chang C, Huang F (2007) J Power Sources 173(1):538–544
Molenda J, Ziemnicki M, Marzec J, Zając W, Molenda M, Bućko M (2007) J Power Sources 173(2):707–711
Deng B, Nakamura H, Yoshio M (2008) J Power Sources 180(2):864–868
Wang X, Tanaike O, Kodama M, Hatori H (2007) J Power Sources 168(1):282–287
Arumugam D, Kalaignan GP, Vediappan K, Lee CW (2010) Electrochim Acta 55(28):8439–8444
Xia H, Tang S, Lu L, Meng Y, Ceder G (2007) Electrochim Acta 52(8):2822–2828
Xiao L, Zhao Y, Yang Y, Cao Y, Ai X, Yang H (2008) Electrochim Acta 54(2):545–550
Zhao SL, Chen HY, Wen JB, Li DX (2009) J Alloys Compd 474(1–2):473–476
Xiong L, Xu Y, Tao T, Goodenough JB (2012) J Power Sources 199:214–219
Shin Y, Manthiram A (2004) J Electrochem Soc 151(2):A204–A208
Xiong L, Xu Y, Tao T, Du X, Li J (2011) J Mater Chem 21(13):4937–4944
Kang Y-J, Kim J-H, Sun Y-K (2005) J Power Sources 146(1):237–240
Fan X-F, Zhao S-X, Li L, Nan C-W (2012) Mater Sci Forum 722:1–9
Amatucci GG, Pereira N, Zheng T, Tarascon J-M (2001) J Electrochem Soc 148(2):A171–A182
Palacin M, Le Cras F, Seguin L, Anne M, Chabre Y, Tarascon J, Amatucci G, Vaughan G, Strobel P (1999) J Solid State Chem 144(2):361–371
Liu H, Tang D (2009) Russ J Electrochem 45(7):762–764
Liu D, Liu X, He Z (2007) J Alloys Compd 436(1):387–391
Tu J, Zhao X, Xie J, Cao G, Zhuang D, Zhu T, Tu J (2007) J Alloys Compd 432(1):313–317
Arumugam D, Kalaignan GP (2010) Electrochim Acta 55(28):8709–8716
Cho MY, Roh KC, Park SM, Lee JW (2011) Mater Lett 65(13):2011–2014
Walz KA, Johnson CS, Genthe J, Stoiber LC, Zeltner WA, Anderson MA, Thackeray MM (2010) J Power Sources 195(15):4943–4951
Okumura T, Fukutsuka T, Uchimoto Y, Amezawa K, Kobayashi S (2009) J Power Sources 189(1):471–475
Kim WK, Han DW, Ryu WH, Lim SJ, Kwon HS (2012) Electrochim Acta 71:17–21
Yang Z, Yang W, Evans DG, Zhao Y, Wei X (2009) J Power Sources 189(2):1147–1153
Wang Y, Wang X, Yang S, Shu H, Wei Q, Wu Q, Bai Y, Hu B (2012) J Solid State Electrochem 16(9):2913–2920
Lee YS, Kumada N, Yoshio M (2001) J Power Sources 96(2):376–384
Amaral FA, Bocchi N, Brocenschi RF, Biaggio SR, Rocha RC (2010) J Power Sources 195(10):3293–3299
Lee YS, Sun YK, Nahm KS (1998) Solid State Ionics 109(3):285–294
Qu Q, Fu L, Zhan X, Samuelis D, Maier J, Li L, Tian S, Li Z, Wu Y (2011) Energy Environ Sci 4(10):3985–3990
Wang C, Lu S, Kan S, Pang J, Jin W, Zhang X (2009) J Power Sources 189(1):607–610
Guan D, Jeevarajan JA, Wang Y (2011) Nanoscale 3(4):1465–1469
Park S-C, Kim Y-M, Kang Y-M, Kim K-T, Lee PS, Lee J-Y (2001) J Power Sources 103(1):86–92
Xiong L, Xu Y, Tao T, Goodenough JB (2012) J Power Sources 199(0):214–219
Liu H, Cao Q, Fu LJ, Li C, Wu YP, Wu HQ (2006) Electrochem Commun 8(10):1553–1557
Wakihara M, Guohua L, Ikuta H, Uchida T (1996) Solid State Ionics 86:907–909
Wu XM, Chen S, Ma MY, Liu JB (2011) Ionics 17(1):35–39