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Li,Al,Mg掺杂对LiNi0.8Co0.1Mn0.1O2正极材料晶格结构和电化学性能的影响元莎1,黄瑞安3,郭玉忠11. 昆明理工大学材料科学与工程学院3. 真空冶金国家工程实验室摘 要:采用共沉淀高温固相反应法合成锂离子电池正极材料LiNi0.8Co0.1Mn0.1O2(811),通过掺入Li,Mg和Al元素,并采用SEM,XRD,电化学测试,研究掺杂对材料晶体结构和电化学性能影响规律.实验结果表明:共沉淀过程中三价金属离子(Mn3+,Al3+)出现会促使少量α-Ni(OH)2形成,而Li+,Mg2+和Al3+均溶入晶格无杂相析出.高温融锂反应中,三种掺杂元素显著削弱Ni2+出现数量,抑制Ni2+混排进入Li+格位,大幅提升811基体可逆容量;Mg2+,Al3+掺杂进一步增强基体晶格稳定性,改善......
. [17] SUN Zhan-bo, WANG Xiao-dong, LI Xue-peng, ZHAO Ming-shu, LI Yan, ZHU Yao-min, SONG Xiao-ping. Electrochemical properties of melt-spun Al–Si–Mn alloy anodes for lithium-ion batteries [J]. Journal...了结构稳定性,这是活化和抑制结构演变的主要原因. 关键词:锂离子电池;Al-Si-Cr合金;熔体快淬;电化学性能;嵌Li活性 (Edited by LI Xiang-qun) Foundation item: Projects (50871081, 51002117, 51071117) supported by the National Natural Science......
.在成分设计上,2060铝锂合金提高了Cu,Li质量比,有利于促进主要强化相T1(Al2CuLi)相的析出[6].除此之外,合金中Mg含量(0.7%~1.1%,质量分数)显著高于其他铝锂合金,如2195,2050,2198等.研究表明[7],铝合金中合金化元素含量高,合金存在较高淬火敏感性.在Al-Zn-Mg-Cu合金和Al-Cu合金中,当Mg,Zn和Mg,Cu质量比增加时,合金淬火敏感性增大[8... applications[J]. Metallurgical and Materials Transactions A, 2012, 43(9): 3325-3337. [4] ALEXOPOULOUS N D, MIGKLIS E, STYLIANOS A, MYRIOUNIS D P. Fatigue behavior of the aeronautical Al-Li (2198) aluminum alloy......
Trans. Nonferrous Met. Soc. China 25(2015) 3855-3864 Hot deformation behavior and microstructure evolution of 1460 Al-Li alloy Sheng XIANG1, Dan-yang LIU1, Rui-hua ZHU1, Jin-feng LI1, Yong-lai CHEN2..., China Received 12 January 2015; accepted 22 April 2015 Abstract: The hot deformation behavior and microstructure evolution of 1460 Al-Li alloy were investigated by isothermal compression test......
铝掺杂的富锂正极材料Li[Li0.2Mn0.4Fe0.3Al0.1]O2的合成及电化学性能研究王洪11. 绵阳师范学院化学与化学工程学院摘 要:用共沉淀法合成了用铝掺杂的铁部分取代锰的富锂正极材料Li[Li0.2Mn0.4Fe0.3Al0.1]O2.采用XRD,SEM,电化学测试等方法对样品进行表征.结果表明,与Li[Li0.2Mn0.45Fe0.35]O2相比,Li[Li0.2Mn0.4Fe0.3Al0.1]O2具有较好的电化学性能,其初始容量达到241mAh/g左右,经50次充放电循环后,容量衰减率在7%左右.关键词:锂离子电池;Li[Li0.2Mn0.4Fe0.3Al0.1]O2;富锂正极材料;......
Trans. Nonferrous Met. Soc. China 29(2019) 1569-1582 Grain structure and tensile property of Al-Li alloy sheet caused by different cold rolling reduction Yun-long MA1,2, Jin-feng LI1,3, Feng-jian... Al-Li alloy sheet at 525-575 °C was investigated through electron backscatter diffraction (EBSD). Although the solutionization temperature is elevated to 575 °C, the sheet is not completely......
Diffusion bonding of Al alloy to Al2O3 ceramicFENG Ji-cai(冯吉才), WANG Da-yong(王大勇), LI Zhuo-ran(李卓然), LIU Hui-jie(刘会杰)(National Key Laboratory of Advanced Welding Production Technology,Harbin... alloy. SEM and EDS were applied to analyze the interfacial microstructures of Al2O3/Cu/Al joint. The preliminary research shows that Al/Cu interfacial microstructures are the main factor affecting joint......
文章编号:1004-0609(2009)11-1948-08 TiAl3对TiC粒子在铝基体中分布及α(Al)晶粒形核的影响 夏天东1, 2,丁万武1, 2,赵文军1, 2,王晓军1, 2,徐仰涛1, 2 (1. 兰州理工大学 甘肃省有色金属新材料省部共建国家重点实验室,兰州 730050; 2. 兰州理工大学 有色金属合金及加工教育部重点实验室,兰州 730050) 摘 要:研究TiC和TiAl3细化工业纯铝时TiAl3的存在对TiC在铝基体中分布及α(Al)晶粒形核的影响,分析Al-Ti-C晶粒细化机制.结果表明:TiC单独作为工业纯铝的晶粒细化剂时,大量TiC被α(Al)晶粒推向树枝晶的晶界处,从而限制了TiC的异质形核作用;当TiC和TiAl3共同作为晶粒细化剂时,在α(Al)晶粒内部出现了大量TiC粒子,大量的TiC粒子成为了α(Al)的结晶核心,并且在......
Trans. Nonferrous Met. Soc. China 30(2020) 835-849 Strength and structure variation of 2195 Al-Li alloy caused by different deformation processes of hot extrusion and cold-rolling Yun-long MA1,2,3... Science and Engineering of Ministry of Education, Central South University, Changsha 410083, China Received 6 August 2019; accepted 3 March 2020 Abstract: 2195 Al-Li alloy was deformed through extrusion......
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