Lithium Storage Properties of ZnO@C Composite Derived from Pyrolysis of Zinc Stearate
YANG Ting1,†, HU Xinyu1,†, WANG Wenlei2
1 School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China 2 College of Science, Central South University of Forestry and Technology, Changsha 410004, China
Abstract: As anode electrode material of lithium-ion battery, ZnO has the problems of poor cycle stability and rate performance. In order to improve the lithium storage performance of ZnO, researchers try to modify it, including structural optimization and composite material modification, but there are usually complex problems in the preparation process. In this experiment, zinc oxide@three-dimensional reticulated carbon composite (ZnO@C) was prepared by a simple pyrolysis method using zinc stearate as the precursor and pyrolysis in inert atmosphere. Then, the physical properties of the composite were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman spectrometer (Raman) and thermogravimetry (TGA), and the in-situ growth process was discussed. ZnO@C, as the anode material of lithium-ion battery, has good cycle stability and rate performance. When the current density is 100 mA/g, it still has a reversible capacity of 369 mAh/g after 60 cycles. The better lithium storage performance of ZnO@C is mainly attributed to its unique structure. The three-dimensional mesh carbon interpenetrated in ZnO particles not only enhances the conductivity of the material and improves the electrode rate performance, but also effectively alleviates the electrode material pulverization caused by volume expansion/contraction during the charging and discharging process of ZnO, and improves the electrode cycle stability.
1 Arascon J M, Armand M. Nature,2001,414(6861),359. 2 Scrosati B, Garche J. Journal of Power Sources,2010,195(9),2419. 3 Park J, Ju J B, Choi W, et al. Journal of Alloys and Compounds,2019,773,960. 4 Cheng X B, Zhang R, Zhao C Z, et al. Chemical Reviews,2017,117(15),10403. 5 Jiang H R, Lu Z, Wu M C, et al. Nano Energy,2016,23,97. 6 Lu S, Wang H, Zhou J, et al. Nanoscale,2017,9(3),1184. 7 Yan Z L, Hu Q Y, Yan G C, et al. Chemical Engineering Journal,2017,321,495. 8 Jin C, Sheng O, Luo J, et al. Nano Energy,2017,37,177. 9 Joshi B N, An S, Jo H S, et al. ACS Applied Materials & Interfaces,2016,8(14),9446. 10 Xu W, Wang J, Ding F, et al. Energy & Environment Science,2014,7(2),513. 11 Lin D, Liu Y, Cui Y. Nature Nanotechnology,2017,12(3),194. 12 Aravindan V, Kumar P S, Sundaramurthy J, et al. Journal of Power Sources,2013,227,284. 13 Zhang L, Liu H W, Shi W, et al. Coordination Chemistry Reviews,2019,388,293. 14 Wang H K, Xie S M, Yao T H, et al. Journal of Materials Chemistry,2019,547,299. 15 Zhao K N, Sun C L, Yu Y H, et al. ACS Applied Materials & Interfaces,2019,10(51),44376. 16 Choi J H, Park G D, Jung D S, et al. Chemical Engineering Journal,2019,369,726. 17 Shao J X, Zhou H, Feng J H, et al. Journal of Alloys and Compounds,2019,784,869. 18 Park M G, Sung G K, Sung N E, et al. Journal of Power Sources,2016,328,607. 19 Fernando J F S, Zhang C, Firestein K L, et al. Journal of Materials Chemistry A,2019,7(14),8460. 20 Huang X H, Xia X H, Yuan Y F, et al. Electrochimica Acta,2011,56(14),4960. 21 Zhang G, Hou S, Zhang H, et al. Advanced Materials,2015,27(14),2400. 22 Quartarone E, Resmini A, Tealdi C, et al. Journal of Power Sources,2016,320,314. 23 Tu Z, Yang G, Song H, et al. ACS Applied Materials & Interfaces,2017,9(1),439. 24 Feng Y, Zhang Y, Song X, et al. Sustainable Energy & Fuels,2017,1(4),767. 25 Wu Z, Qin L, Pan Q. Journal of Alloys and Compounds,2011,509(37),9207. 26 Yang X, Xue H, Yang Q, et al. Chemical Engineering Journal,2017,308,340. 27 Wang H, Wu X, Qi X, et al. Materials Research Bulletin,2018,103,32. 28 Shen L, Wang C. RSC Advances,2015,5(108),88989.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2021, Vol. 35 
