| Effect of ball milling and electrolyte on properties of high-voltage LiNi_(0.5)Mn_(1.5)O_4 spinel |
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| 作者姓名： | 方海升 王志兴 尹周澜 李新海 郭华军 彭文杰 |
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| 作者单位： | School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Chemistry and Chemical Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China，School of Metallurgical Science and Engineering Central South University Changsha 410083 China |
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| 基金项目： | State Education Ministry，中南大学校科研和教改项目 |
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| 摘 要： | 1 INTRODUCTIONRecently ,several research groups have repor-ted transition-metal-substituted spinel materials(Li MxMn2 -xO4, M: Cr , Co , Fe , Ni , Cu) withhigh-voltage plateaus above 4 .5 V1 5]. Amongthese materials ,Li Ni0 .5Mn1 .5O4is the most prom-ising and attractive one because of its good cyclicproperty and relatively high capacity with a plateauat around 4 .7 V3 ,6].Now, a variety of methods were used forpreparation of Li Ni0 .5Mn1 .5O4,such as solid-statereaction4 ,7 ,8]…
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Effect of ball milling and electrolyte on properties of high-voltage LiNi0.5Mn1.5O4 spinel |
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| FANG Hai-sheng,WANG Zhi-xing,YIN Zhou-lan,LI Xin-hai,GUO Hua-jun,PENG Wen-jie.Effect of ball milling and electrolyte on properties of high-voltage LiNi_(0.5)Mn_(1.5)O_4 spinel[J].Transactions of Nonferrous Metals Society of China,2005,15(6). |
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| Authors: | FANG Hai-sheng WANG Zhi-xing YIN Zhou-lan LI Xin-hai GUO Hua-jun PENG Wen-jie |
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| Abstract: | Effect of ball milling and electrolyte on the properties of high-voltage LiNi0.5Mn1.5O4 was investigated. Ball milling has significant effect on the synthesis and property of LiNi0.5Mn1.5O4. The X-ray diffraction(XRD) patterns indicate that LiNi0.5Mn1.5O4 can't be synthesized without ball milling even calcined at 900℃. When synthesized with ball milling, LiNi0.5Mn1.5O4 almost exhibits only one plateau at around 4.7V. With the increase of ball milling time, the capacity of LiNi0.5Mn1.5O4 increases, but the cycling performance is not highly affected. The electrochemical property of LiNi0.5Mn1.5O4 highly depends on the electrolyte. The stable and high-voltage-resistant electrolyte is much beneficial to enhancement of electrochemical property of LiNi0.5Mn1.5O4, such as coulombic efficiency and cycling performance. |
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| Keywords: | LiNi0 5Mn1 5O4 cathode lithium ion batteries ball milling electrolyte |
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