期刊
JOURNAL OF POWER SOURCES
卷 196, 期 16, 页码 6682-6687出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2010.11.086
关键词
Cathode material; Spray pyrolysis; Lithium vanadium phosphate
资金
- Ministry of Knowledge Economy (MKE), Republic of Korea [M2009010025]
- Seoul R BD Program [WR090671]
- Korea Evaluation Institute of Industrial Technology (KEIT) [K0006060] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Li3V2(PO4)(3) and Li3V2(PO4)(3)/C powders are prepared by ultrasonic spray pyrolysis from spray solutions with and without sucrose. The precursor powders have a spherical shape and the crystal structure of V2O3 irrespective of the concentration of sucrose in the spray solution. The powders post-treated at 700 degrees C have the pure crystal structure of the Li3V2(PO4)(3) phase irrespective of the concentration of sucrose in the spray solution. The Li3V2(PO4)(3) powders prepared from the spray solution without sucrose have a non-spherical shape and hard aggregation. However, the Li3V2(PO4)(3)/C powders prepared from the spray solution with sucrose have a spherical shape and non-aggregation characteristics. The Li3V2(PO4)(3) powders prepared from the spray solution without sucrose have a low initial discharge capacity of 122 mAh g(-1). However, the Li3V2(PO4)(3)/C powders prepared from the spray solutions with 0.1, 0.3, and 0.5 M sucrose have initial discharge capacities of 141, 130, and 138 mAh g(-1), respectively. After 25 cycles, the discharge capacities of the powders formed from the spray solutions with and without 0.1 M sucrose are 70% and 71% of the initial discharge capacities, respectively. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据