Abstract
Core–shell CeO2 micro/nanospheres are prepared via microwave-assisted solvothermal process followed by calcination in air. The reaction time is only 30 min. Structure information, phase, and morphologies of the as-synthesized powder are characterized by X-ray diffraction (XRD), scan electron microscope (SEM), and transmission electron microscope (TEM), respectively. The heterogeneous contraction originated from the non-equilibrium heat treatment may be responsible for the formation of core-shelled structure. Charge–discharge test and electrochemical impedance spectroscopy (EIS) are carried out by using the as-prepared CeO2 as an anode material for lithium-ion batteries. When tested in 0.01–1.5 V at 0.2 mA cm−2, the initial discharge capacity is 454.2 mAh g−1 and stabilized reversibly at about 327.0 mAh g−1 after 100 cycles. The special core–shell micro/nanostructure is more capable of buffering the volume change, resulting in enhanced electrochemical performances. This exploring about the core–shell micro/nanomaterial may direct a new generation electrode material of Li-ion batteries.
References
Poizot P, Laruelle S, Grugeon S, Dupont L, Tarascon J-M (2000) Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries. Nature 407:496–499
Zhao Y, Li X, Yan B, Xion D, Li D, Lawes S, Sun X (2016) Recent developments and understanding of novel mixed transition-metal oxides as anodes in lithium ion batteries. Adv Energy Mater. doi:10.1002/aenm.201502175
Won JM, Hong YJ, Kim JH, Choi YJ, Kang YC (2016) Electrochemical properties of core-shell structured NiO@SiO2 ultrafine nanopowders below 10 nm for lithium-ion storages. Electrochim Acta 190:835–842
Guo J, Wang Q, Qi C, Jin J, Zhu Y, Wen Z (2016) One-step microwave synthesized core-shell structured selenium@carbon spheres as cathode materials for rechargeable lithium batteries. Chem Commun. doi:10.1039/C6CC00638H
Pang H, Chen C (2014) Facile synthesis of cerium oxide nanostructures for rechargeable lithium battery electrode materials. RSC Adv 4:14872–14878
Liu HW, Liu HF (2016) Preparingmicro/nanocore–shell sphere CeO2 via a low temperature route for improved lithium storage performance. Mater Lett 168:80–82
Bao SJ, Liang YY, Zhou WJ, He BL, Li HL (2006) Synthesis and electrochemical properties of LiAl0.1Mn1.9O4 by microwave-assisted sol–gel method. J Power Sources 154:239–245
Wang Z, Fu H, Tian Z, Han D, Gu F (2016) Strong metal–support interaction in novel core–shell Au–CeO2 nanostructures induced by different pretreatment atmospheres and its influence on CO oxidation. Nanoscale 8:5865–5872
Zhong HX, Wei Y, Yue YZ, Zhang LH, Liu Y (2016) Preparation of core-shell Ag@CeO2 nanocomposite by LSPR photothermal induced interface reaction. Nanotechnology 27:135701–135706
Cao CY, Cui ZM, Chen CQ, Song WG, Cai W (2010) Ceria Hollow nanospheres produced by a template-free microwave-assisted hydrothermal method for heavy metal ion removal and catalysis. J Phys Chem C 114:9865–9870
Sun C, Li H, Zhang H, Wang Z, Chen L (2005) Controlled synthesis of CeO2 nanorods by a solvothermal method. Nanotechnology 16:1454–1463
Guan JG, Mou FZ, Sun ZG, Shi WD (2010) Preparation of hollow spheres with controllable interior structures by heterogeneous contraction. Chem Commun 46:6605–6607
Zhou L, Zhao D, Lou X (2012) Double-shelled CoMn2O4 hollow microcubes as high-capacity anodes for lithium-ion batteries. Adv Mater 24:745–748
Su Q, Chang L, Zhang J, Du G, Xu B (2013) In situ TEM observation of the electrochemical process of individual CeO2/graphene anode for lithium ion battery. J Phys Chem C 117:4292−4298
Zhou F, Ni X, Zhang Y, Zheng H (2007) Size-controlled synthesis and electrochemical characterization of spherical CeO2 crystallites. J Colloid Interface Sci 307:135–138
Liu H, Le Q (2016) Synthesis and performance of cerium oxide as anode materials for lithium ion batteries by a chemical precipitation method. J Alloys Compd 669:1–7
Acknowledgments
This work was financially supported by the National Natural Science Foundation of China (21503282), the Special Fund for Basic Scientific Research of Central Colleges, and the South-Central University for Nationalities (CZW15090).
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Liu, H., Liu, H. & Han, X. Core–shell CeO2 micro/nanospheres prepared by microwave-assisted solvothermal process as high-stability anodes for Li-ion batteries. J Solid State Electrochem 21, 291–295 (2017). https://doi.org/10.1007/s10008-016-3320-6
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DOI: https://doi.org/10.1007/s10008-016-3320-6