| 形貌可控的尖晶石型LiNi0．5 Mn1．5O4的合成与性能 |
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| 引用本文： | 陈强,;胡航,;赵瑞瑞,;朱继涛,;蒋建辉,;陈红雨.形貌可控的尖晶石型LiNi0．5 Mn1．5O4的合成与性能[J].电池工业,2014(2):71-75. |
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| 作者姓名： | 陈强 ;胡航 ;赵瑞瑞 ;朱继涛 ;蒋建辉 ;陈红雨 |
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| 作者单位： | [1]华南师范大学化学与环境学院,广东广州510006; [2]深圳慧通天下科技股份有限公司,广东深圳518106; [3]广东省产品质量监督检验研究院,广东广州510308 |
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| 基金项目： | 深圳市发展和改革委员会项目，广东省发改委第二批省战略性新兴产业发展专项资金新能源汽车发展项目（No．301-5）。 |
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| 摘 要： | 采用溶胶-凝胶法制备了5 V正极材料LiNi0．5 Mn1．5 O4。将混合盐溶液以不同速度加入草酸溶液中，对制得的LiNi0．5 Mn1．5 O4材料的结构、形貌和电化学性能会产生显著的影响。结果表明：将盐溶液以0．17 mL/s的速度加入到草酸中，预烧温度为450℃，焙烧4 h，后900℃焙烧6 h制得的样品为粒径均匀的多面体，1 C 充放电初始容量达到135 mAh/g，55次循环后的放电比容量保持率为96．26％。
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| 关 键 词： | 锂离子电池 5 V正极材料 LiNi0.5 Mn1.5O4 溶胶-凝胶法 |
Synthesis and performance of shape-controlled spinel LiNi0.5 Mn1.5O4 |
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| Affiliation: | CHEN Qiang, HUO Hang, ZHAO Rui-rui, ZHU Ji-tao, JIANG Jian-hui, CHEN Hong-yu (1. School of Chemistry and Environment, South China Normal University, Guangzhou, Guangdong 510006, China;2. Shenzhen WISEWOD Technology Co. ,Ltd. , Shenzhen, Guangdong 518106, China; 3. Guang dong Testing Institute of Product Quality Supervision, Guangzhou , Guang dong 510308, China) |
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| Abstract: | LiNi0.5 Mn1.5 O4 powders were synthesized by sol-gel method.The salt solution was add-ed into the oxalic acid solution at different feeding speeds.The crystal structures,material mor-phologies and electrochemical performances of the LiNi0.5 Mn1.5 O4 cathode materials were exam-ined by XRD and SEM technologies.The results reveal optimized synthesis parameters：the salt solution of a feeding speed of 0.17 ml/s and preheated temperature at 450 ℃ for 4 h.The as-made material delivers a discharge capacity of 1 3 5 mAh/g at 1 C rate with a high capacity reten-tion of 96.26% after 55 cycles. |
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| Keywords: | Li-ion battery 5 V cathode material LiNi0 5 Mn1 5 O4 sol-gel method |
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