| 5 V正极材料LiNi0.5Mn1.5O4的自蔓延燃烧合成及性能 |
| Electrochemical Properties of LiNi0.5Mn1.5O4 as 5 V Cathode Materials Synthesized through Self-Combustion Reaction(SCR) |
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| 摘要: 通过自蔓延燃烧方法合成了性能优良的高电位5 V锂离子电池正极材料LiNi0.5Mn1.5O4，利用傅立叶红外光谱(FTIR)、热分析(DSC/TG)、X射线衍射(XRD)、透射电镜(TEM)等方法对前驱物及样品的结构和物化性质等进行了分析和表征，考察了材料的电化学性能。结果表明，所制备样品具有单一的尖晶石相结构，具有4.7 V充放电平台；在3.5 V到5.2 V之间进行充放电性能测试具有131 mAh·g-1以上的可逆容量；在2C倍率下循环100次后的容量保持率为96%以上。 |
| 关键词: 锂离子电池 5 V正极材料 LiNi0.5Mn1.5O4 溶胶-凝胶法 自蔓延燃烧法 |
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| Abstract: LiNi0.5Mn1.5O4 was synthesized through self-combustion reaction(SCR). FTIR,DSC/TG, XRD, and TEM were used for studying the spectrum, the structure, and the morphology of samples .The results show that LiNi0.5Mn1.5O4 has a good spinel structure and morphology ,and as well a good discharge/charge performance and cycle stability. The reversible capacity of LiNi0.5Mn1.5O4 reaches to 131 mAh·g-1 between 3.5 V and 5.2 V and show a single voltage plateaus at around 4.7 V. The capacity retention of LiNi0.5Mn1.5O4 is 96% after 100 charge/discharge cycles at 2 C rate. |
| Keywords: lithium-ion battery 5 V cathode materials LiNi0.5Mn1.5O4 sol-gel self-combustion reaction(SCR) |
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| 范未峰,瞿美臻,彭工厂,于作龙.5 V正极材料LiNi0.5Mn1.5O4的自蔓延燃烧合成及性能[J].无机化学学报,2009,25(1):124-128. |
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