Enhanced electrochemical performance of Li2FeSiO4/C cathode materials by surface modification with AlPO4 nanosheets
作者： Hailong Qiu , Huijuan Yue , Tong Zhang , Tingting Li , Chunzhong Wang
DOI: 10.1016/J.ELECTACTA.2016.11.180
关键词: Electrochemistry 、 Chemical engineering 、 Materials science 、 Surface modification 、 Formula unit 、 Cathode 、 Electrolyte 、 Coating 、 Inorganic chemistry 、 Lithium 、 Layer (electronics)
摘要: Abstract Lithium iron silicates (Li2FeSiO4) are promising materials for use as cathodes because they may theoretically allow a two-electron exchange per formula unit. However, the high operating voltage (4.8 V vs. Li+/Li) promote unwanted side-reactions between cathode and electrolyte, causing serious capacity fading during cycling. In this report, Li2FeSiO4/C coated with AlPO4 nanosheets successfully prepared to improve electrochemical performance of lithium silicates. The structure morphology samples characterized using XRD, SEM TEM analysis. Compared pristine sample that has not been modified, 2 wt.% AlPO4-coated exhibits enhanced rate capability cycling performance, especially at elevated-temperature. Additionally, coating layer suppresses stress volume change prevents separation carbon from host material
sci-hub.se 参考文章(32)
K TAN, M REDDY, G RAO, B CHOWDARI, Effect of AlPO4-coating on cathodic behaviour of Li(Ni0.8Co0.2)O2 Journal of Power Sources. ,vol. 141, pp. 129- 142 ,(2005) , 10.1016/J.JPOWSOUR.2004.08.044
Jin Yi Shi, Cheol-Woo Yi, Keon Kim, Improved electrochemical performance of AlPO4-coated LiMn1.5Ni0.5O4 electrode for lithium-ion batteries Journal of Power Sources. ,vol. 195, pp. 6860- 6866 ,(2010) , 10.1016/J.JPOWSOUR.2010.02.063
Benan Hu, Xianyou Wang, Yingping Wang, Qiliang Wei, Yunfeng Song, Hongbo Shu, Xiukang Yang, Effects of amorphous AlPO4 coating on the electrochemical performance of BiF3 cathode materials for lithium-ion batteries Journal of Power Sources. ,vol. 218, pp. 204- 211 ,(2012) , 10.1016/J.JPOWSOUR.2012.07.010
Chang Su, Xidan Bu, Lihuan Xu, Junlei Liu, Cheng Zhang, A novel LiFePO4/graphene/carbon composite as a performance-improved cathode material for lithium-ion batteries Electrochimica Acta. ,vol. 64, pp. 190- 195 ,(2012) , 10.1016/J.ELECTACTA.2012.01.014
Lu-Lu Zhang, Song Duan, Xue-Lin Yang, Gan Liang, Yun-Hui Huang, Xing-Zhong Cao, Jing Yang, Ming Li, Mark C. Croft, Cale Lewis, Insight into cobalt-doping in Li2FeSiO4 cathode material for lithium-ion battery Journal of Power Sources. ,vol. 274, pp. 194- 202 ,(2015) , 10.1016/J.JPOWSOUR.2014.10.048
Anton Nytén, Saeed Kamali, Lennart Häggström, Torbjörn Gustafsson, John O. Thomas, The lithium extraction/insertion mechanism in Li2FeSiO4 Journal of Materials Chemistry. ,vol. 16, pp. 2266- 2272 ,(2006) , 10.1039/B601184E
Il Tae Kim, James C. Knight, Hugo Celio, Arumugam Manthiram, Enhanced electrochemical performances of Li-rich layered oxides by surface modification with reduced graphene oxide/AlPO4 hybrid coating Journal of Materials Chemistry. ,vol. 2, pp. 8696- 8704 ,(2014) , 10.1039/C4TA00898G
Yimeng Xu, Wei Shen, Cong Wang, Aili Zhang, Qunjie Xu, Haimei Liu, Yonggang Wang, Yongyao Xia, Hydrothermal synthesis and electrochemical performance of nanoparticle Li2FeSiO4/C cathode materials for lithium ion batteries Electrochimica Acta. ,vol. 167, pp. 340- 347 ,(2015) , 10.1016/J.ELECTACTA.2015.03.170
Huaxu Gong, Yongchun Zhu, Linlin Wang, Denghu Wei, Jianwen Liang, Yitai Qian, Solid-state synthesis of uniform Li2MnSiO4/C/graphene composites and their performance in lithium-ion batteries Journal of Power Sources. ,vol. 246, pp. 192- 197 ,(2014) , 10.1016/J.JPOWSOUR.2013.07.079
Haitao Zhou, Mari-Ann Einarsrud, Fride Vullum-Bruer, High capacity nanostructured Li2FexSiO4/C with Fe hyperstoichiometry for Li-ion batteries Journal of Power Sources. ,vol. 235, pp. 234- 242 ,(2013) , 10.1016/J.JPOWSOUR.2013.02.023