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首页> 外文会议>Energy Technologies Symposium >Effect of Sonication Power on Al_2O_3 Coated LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2 Cathode Material for LIB
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Effect of Sonication Power on Al_2O_3 Coated LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2 Cathode Material for LIB

机译：超声波功率对LIB的AL_2O_3涂覆LINI_（0.3）CO_（0.2）O_2阴极材料的影响

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Lithium ion batteries are potential energy source of next generation electric vehicles (EVs). However, some problems such as safety, durability, low capacity, cycle life etc. restrict their use in EVs. These problems mostly related with cathode materials, an improvement in cathode materials may cause significant changes in battery performance. In this work, to overcome cycle life problem Al_2O_3 coating on LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2 cathode material produced by sol - gel method. The surface modification of LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2 was started by adding LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2 powders into alumina sol. Then, sonication was started and two different sonication powers were tested (45, 100%). After the second gel is obtained, last heat treatment for Al_2O_3 crystallization was done at 600°C for 4 h. X - ray diffraction (XRD) measurements showed that the material had a well - ordered layered structure and Al was not in the LiNi_(0.5)Mn_(0.3)Co_(0.2)O_2. Al_2O_3 coated materials show better cycling performance compared to the pristine material. It is believed that, this improvement is caused by the fact that Al_2O_3 layer prevents direct contact between active material and electrolyte and reducing decomposition reactions.
机译：锂离子电池是下一代电动车辆（EVS）的潜在能源。然而，一些问题如安全，耐用，低容量，循环寿命等限制了他们在EVS中的使用。这些问题主要与阴极材料相关，阴极材料的改善可能导致电池性能显着变化。在这项工作中，克服循环寿命问题AL_2O_3涂层在LINI_（0.5）MN_（0.3）CO_（0.2）O_2的阴极材料上，由溶胶 - 凝胶法产生。通过将LINI_（0.5）MN_（0.3）CO_（0.2）O_2粉末加入氧化铝溶胶来开始LINI_（0.5）MN_（0.2）CO_（0.2）O_2的表面改性。然后，开始超声处理，测试两个不同的超声波（45,100％）。在获得第二凝胶之后，将用于Al_2O_3结晶的最后热处理在600℃下进行4小时。 X射线衍射（XRD）测量表明，该材料具有良好有序的分层结构，Al不在LINI_（0.5）MN_（0.3）CO_（0.2）O_2中。与原始材料相比，AL_2O_3涂层材料显示出更好的循环性能。据信，这种改进是由Al_2O_3层防止活性材料和电解质之间的直接接触并降低分解反应来引起的。

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