Corresponding Author

Hong LI(hli@iphy.ac.cn)


Non-aqueous electrolyte has been widely used in commercial Li-ion batteries. Optimized choices are proceeding among the various types of salts and solvents in an effort to achieve higher performance of electrolyte. However, the electrolyte will be reduced in low potential and the reductive product will be deposited on the surface of anode to form a passivating layer, solid electrolyte interphase (SEI). Herein an atomic force microscopy (AFM) based method was introduced to study the structure and mechanical property of SEI on silicon thin film anode during the first cycle. Silicon has been known as the most potential candidate anode for next generation of Li-ion batteries. However, large volume change and unstable SEI formation during cycling are needed to be resolved before practical application. In this study, the electrolyte was 1 mol·L-1 LiPF6 (EC:DMC=1:1) containing 2% vinylene carbonate. Layered-structures such as single layer, double layers and triple layers of SEI were detected, and the Young’s Modulus of the SEI was extracted from the force curves. Coverage of SEI was also obtained. A 3-D plot was introduced to real space mapping the formation of SEI on silicon anode at different cycle states.

Graphical Abstract


silicon anode, solid electrolyte interphase, atomic force microscopy, force curve, Li-ion batteries

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[1] Armand M, Tarascon J M. Building better batteries[J]. Nature, 2008, 451(7179): 652-657.

[2] Tollefson J. Charging up the future[J]. Nature, 2008, 456(7221): 436-440.

[3] Li H, Wang Z, Chen L, et al. Research on advanced materials for Li-ion batteries[J]. Advanced Materials, 2009, 21(45): 4593-4607.

[4] Xu K. Nonaqueous liquid electrolytes for lithium-based rechargeable batteries[J]. Chemical Reviews, 2004, 104(10): 4303-4418.

[5] Peled E. The electrochemical behavior of alkali and alkaline earth metals in nonaqueous battery systems—the solid electrolyte interphase model[J]. Journal of the Electrochemical Society, 1979, 126(12): 2047-2051.

[6] Goodenough J B, Kim Y. Challenges for rechargeable Li batteries[J]. Chemistry of Materials, 2010, 22(3): 587-603.

[7] Peled E, Golodnitsky D, Ardel G. Advanced model for solid electrolyte interphase electrodes in liquid and polymer electrolytes[J]. Journal of the Electrochemical Society, 1997, 144(8): L208-L210.

[8] Aurbach D, Markovsky B, Levi M, et al. New insights into the interactions between electrode materials and electrolyte solutions for advanced nonaqueous batteries[J]. Journal of Power Sources, 1999, 81: 95-111.

[9] Kim S P, Duin A C T, Shenoy V B. Effect of electrolytes on the structure and evolution of the solid electrolyte interphase (SEI) in Li-ion batteries: A molecular dynamics study[J]. Journal of Power Sources, 2011, 196(20): 8590-8597.

[10] He Y, Yu X Q, Li G, et al. Shape evolution of patterned amorphous and polycrystalline silicon microarray thin film electrode caused by lithium insertion and extraction[J]. Journal of Power Sources, 2012, 216: 131-138.

[11] Wang J W, He Y, Fan F, et al. Two-phase electrochemical lithiation in amorphous silicon[J]. Nano Letters, 2013, 13(2): 709-715.

[12] Li H, Huang X, Chen L, et al. A high capacity nano Si composite anode material for lithium rechargeable batteries[J]. Electrochemical and solid-state letters, 1999, 2(11): 547-549.

[13] Chan C K, Peng H, Liu G, et al. High-performance lithium battery anodes using silicon nanowires[J]. Nature Nanotechnology, 2008, 3(1): 31-5.

[14] Fu Y P(傅焰鹏), Chen H X(陈慧鑫), Yang Y(杨勇). Silicon nanowires as anode materials for lithium ion Batteries[J]. Journal of Electrochemistry (电化学), 2009, 15(1): 56-61.

[15] Takamura T, Ohara S, Uehara M, et al. A vacuum deposited Si film having a Li extraction capacity over 2000 mAh/g with a long cycle life[J]. Journal of Power Sources, 2004, 129(1): 96-100.

[16] Aurbach D, Gamolsky K, Markovsky B, et al. On the use of vinylene carbonate (VC) as an additive to electrolyte solutions for Li-ion batteries[J]. Electrochimica Acta, 2002, 47(9): 1423-1439.

[17] Alliata D, R K?tz, P Novák, et al. Electrochemical SPM investigation of the solid electrolyte interphase film formed on HOPG electrodes[J]. Electrochemistry Communications, 2000, 2(6): 436-440.

[18] Jeong S-K, Inaba M, Iriyama Y, et al. AFM study of surface film formation on a composite graphite electrode in lithium-ion batteries[J]. Journal of Power Sources, 2003, 119-121: 555-560.

[19] Lucas I T, Pollak E, Kostecki R. In situ AFM studies of SEI formation at a Sn electrode[J]. Electrochemistry Communications, 2009, 11(11): 2157-2160.

[20] Zhang J, Wang R, Yang X, et al. Direct observation of inhomogeneous solid electrolyte interphase on MnO anode with atomic force microscopy and spectroscopy[J]. Nano Letters, 2012, 12(4): 2153-2157.

[21] Wang Y, He Y, Xiao R, et al. Investigation of crack patterns and cyclic performance of Ti-Si nanocomposite thin film anodes for lithium ion batteries[J]. Journal of Power Sources, 2012, 202: 236-245.

[22] Andersson A M, Abraham D P, Haasch R, et al. Surface characterization of electrodes from high power lithium-ion batteries[J]. Journal of the Electrochemical Society, 2002, 149(10): A1358-A1369.



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