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| 1 | 锂离子电池正极材料稀土掺杂的研究进展显示文摘总结了各种常用锂离子电池正极材料的优点和缺陷;论述了近年来锂离子电池正极材料稀土掺杂的研究进展;重点介绍了不同掺杂工艺、稀土掺杂元素种类、掺杂量对正极材料结构、形貌、电化学性能的影响。 | 李明明 张英杰 董鹏 | 2015 | 电源技术2015,39,7: | 8 |
| 2 | 高电压正极材料在全固态锂离子电池中的应用展望显示文摘全固态锂离子电池是以固态电解质取代液体电解质的锂离子电池、它有望从根本上解决电池的安全性问题,如能实现其大容量化和长寿命,将在电动汽车和规模化储能领域具有非常广阔的应用前景.由于固态电解质比液态电解质有更宽的工作电位窗口,因此可以在全固态电池中使用具有较高电压平台的正极材料,通过提升电池的工作电压以获得高能量密度,从而实现大容量化.锂离子电池正极材料尖晶石LiNi0.5Mn1.5O4,三元层状材料和富锂锰基正极材料都具有较高的电压平台,是全固态锂离子电池可选用的理想正极材料.本文介绍了尖晶石LiNi0.5Mn1.5O4,三元层状材料和富锂锰基正极材料的结构和性能特点,重点阐述了与改善材料的电导率和界面性质相关的的研究,改善其作为全固态锂离子电池正极材料与固态电解质的匹配性能,从而全面提升全固态电池的性能.总结了3种材料在全固态锂离子电池中应用存在的问题,提出未来的技术攻关方向,并对其在全固态电池中的应用前景进行了展望. | 田君 金翼 官亦标 苏岳锋 包丽颖 陈实 吴锋 | 2014 | 科学通报2014,59,7: | 4 |
| 3 | Application prospects of high-voltage cathode materials in all-solid-state lithium-ion batteries显示文摘All-solid-state lithium-ion batteries are lithiumion batteries with solid-state electrolytes instead of liquid electrolytes.They are hopeful in solving the safety problems of lithium-ion batteries,once their large capacity and long life are achieved,they will have broad application prospects in the field of electric vehicles and large-scale energy storage.The working potential window of solid electrolytes is wider than that of liquid electrolytes,so high-voltage cathode materials could be used in all-solidstate lithium-ion batteries to get higher energy density and larger capacity by elevating the working voltage of the batteries.The spinel LiNi0.5Mn1.5O4material,layered Li–Ni–Co–Mn–O cathode materials and lithium-rich cathode materials can be expected to be applied to all-solid-state lithium-ion batteries as cathode materials due to their highvoltage platforms.In this review,the electrochemical properties and structures of spinel LiNi0.5Mn1.5O4material,layered Li–Ni–Co–Mn–O cathode materials and lithiumrich cathode materials are introduced.More attentions are paid on recent research progress of conductivity and interface stability of these materials,in order to improve their compatibility with solid electrolytes as cathode materials in all-solid-state lithium-ion batteries and fully improve the properties of all-solid-state batteries.Finally,the existing problems of their application in all-solid-state lithium-ion batteries are summarized,the main research directions are put forward and their application prospects in all-solid-state lithium-ion batteries are discussed. | Jun Tian Yi Jin Yibiao Guan Yuefeng Su Liying Bao Shi Chen Feng Wu | 2014 | Chinese Science Bulletin2014,59,17: | 4 |
| 4 | Methods for promoting electrochemical properties of LiNi_(l/3) Co_(l/3) Mn_(l/3)O_2 for lithium-ion batteries显示文摘One popular study of the recent research is to develop the cathode materials for lithium-ion batteries. As a new cathode material for lithium-ion batteries, the LiNil/3Col/3Mnl/3O2 has drawn widespread attention because of its high capacity, high cut-off voltage and high tap density. Its theoretical capacity is 277.8 mAh/g. The crystal structure of LiNil/3Col/3Mnl/3O2 is α-NaFeO 2 . The structural and morphological features of the LiNil/3Col/3Mnl/3O2 are introduced in this paper. The emphasis is to present the methods for promoting electrochemical properties. The electrochemical properties and structure characteristics are discussed. And the prospect of layered LiNil/3Col/3Mnl/3O2 is forecast in the end. | BAO LiYing CHE HuiQuan HU DaoZhong SU YueFeng WANG Zhao LI Ning CHEN Shi WU Feng | 2013 | Chinese Science Bulletin2013,58,16: | 2 |
| 5 | 固相合成铝掺杂高Ni系层状锂电池正极材料显示文摘高Ni系层状锂离子电池正极材料具有优越的质量比容量。综述了高Ni系层状材料在结构和性能方面的优缺点。重点介绍了固相法合成铝掺杂高Ni系层状材料的方法,并且对影响固相法合成铝掺杂高Ni系层状材料结构性能的烧结条件作了重点分析。 | 夏书标 张英杰 董鹏 张雁南 | 2013 | 材料导报2013,27,23: | 1 |
| 6 | 富锂锰基多层氧化物电极材料的制备与改性显示文摘富锂多层氧化物(LLOs)因其具有比容量大、能量密度高等优点而有望成为锂电池的电极材料。但该材料在工作条件下生成的尖晶石相会导致容量下降。在LLOs中掺杂Mn的氧化物形成Li_(1.2)Ni_(0.13)Co_(0.13)Mn_(0.54-x)Mn_(x)O_(2)(x=0,0.0025,0.0050,0.0075)可以有效提高其循环性能。实验结果表明:将Mn引入到LLOs的晶格中,使得晶胞参数增大,晶面间距增大,有利于Li+的脱出和嵌入,能够提供更为宽阔的锂离子通道供锂离子快速迁移,有利于电极/电解液界面上的锂离子扩散,并且可以提高锂离子电池的比容量。含有0.5%(质量分数)Mn氧化物的样品100次充放电后容量保持率为94.3%,5 C电流密度下仍具有139.6 mAh/g的放电比容量。 | 陈颖 陈大鹏 刘钊 | 2022 | 电源技术2022,46,6: | 1 |
| 7 | K^(+)掺杂LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)材料的制备及电化学性能研究显示文摘锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)具有放电比容量大、热稳定性好、成本低、安全性能好等优点,但其倍率性能有待进一步提升。本文采用水热法制备了K^(+)掺杂LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)材料LNCM-x K。通过X射线衍射谱、场发射扫描电镜和X射线光电子能谱表征LNCM-x K的形貌和结构,通过电化学工作站和蓝电测试系统测试其电化学性能。结果表明:K^(+)掺杂能有效降低阳离子混排程度,改善LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)材料的电化学性能,其中当x=0.125时K^(+)掺杂LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)样品(LNCM-0.125K)阳离子混排程度最低;LNCM-0.125K样品电化学性能最佳,0.2 C下50次循环后容量保持率为96.15%;在不同电流密度(0.2 C,0.5 C,1 C,2 C,5 C)下进行倍率性能测试,连续充放电30次后LNCM-0.125K样品容量保持率为97.00%。 | 郭丽芳 解玉龙 本措吉 | 2022 | 硅酸盐通报2022,41,9: | 0 |
| 8 | 富锂锰基正极材料的改性及其电化学性能研究显示文摘采用溶剂热法成功制备了富锂锰基正极材料Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)(LLO),通过铈离子掺杂和Nb_(2)O_(5)包覆,获得新型改性富锂锰基正极材料CNLLO。与LLO相比,比镍、钴、锰离子半径更大的铈离子的掺入增加了CNLLO的层间距,提高了锂离子扩散速率;Nb_(2)O_(5)包覆层抑制了CNLLO表面的副反应,限制了晶体结构的转变,提高了CNLLO的稳定性。在10 C倍率下,CNLLO的放电比容量(128.0 mAh·g^(-1))高于LLO(85.6 mAh·g^(-1))。此外,CNLLO还表现出优异的循环性能,1 C下循环200次后容量保持率和平均放电电压衰减值分别为80.2%和415.3 mV。因此,所制备的CNLLO正极材料具有优异的电化学性能,在锂离子电池中具有广阔的应用前景。 | 罗欢 李豪 袁盛旭 张亚萍 李劲超 | 2022 | 化学研究与应用2022,34,8: | 0 |