【摘 要】
：
Spinel Li4Ti5O12/Cu2O composite was prepared by ball-milling Li4Ti5O12 and Cu2O and further heat-treatment.The structure and electrochemical performance of the composite were investigated by X-ray dif
【机 构】
：
Shanghai University of Electric Power, Shanghai S
【出 处】
：
第六届中国储能与动力电池及其关键材料学术研讨与技术交流会
论文部分内容阅读
Spinel Li4Ti5O12/Cu2O composite was prepared by ball-milling Li4Ti5O12 and Cu2O and further heat-treatment.The structure and electrochemical performance of the composite were investigated by X-ray diffraction, scanning electron microscope, energy disperse spectroscopy, cyclic vohammetry, electrochemical impedance spectroscopy and charge-discharge tests.
其他文献
首先以50％发烟硫酸为磺化剂,将4,4-二氟二苯酮反应生成3,3-二磺酸基-4,4-二氟二苯酮.然后以3,3 -二磺酸基-4,4-二氟二苯酮、4,4-二氟二苯酮与3,3-二羟基二苯胺为单体通过亲核取代反应生成了磺化聚亚胺醚酮.然后对生成的结构经FT-IR、1H-NMR、TG、DSC表征.
纳米管钛酸(Nanotube titanium acid,NTA)因具有大的比表面积、独特的管状和层状结构在作为锂离子电池材料时可以为锂离子的快速扩散提供通道、提高储锂动力学等优点受到科研工作者的广泛关注.纳米管钛酸是一个绝缘体,经热处理后转变为锐钛矿相的二氧化钛成为半导体.在此过程中钛酸纳米管发生化学组成的变化、晶体结构的转变及其管状结构的破坏.
锂离子电池广泛应用于消费电子产品中,作为动力电池应用于电动汽车迫切需要提高其能量密度和解决安全性问题.目前,锂电池产业中所使用的电解质材料主要是碳酸酯类化合物和六氟磷酸锂(LiPF6)锂盐体系,有机碳酸酯高挥发性和燃烧性是导致动力电池安全隐患的重要因素,商业碳负极实际比容量已接近理论容量(372mAh/g),很难在现有材料体系下提高电池的容量.
全钒液流电池(简称钒电池)是一种新型高效电能储存装置,在风能、太阳能等发电系统稳定供电,电力系统调峰等方面具有非常好的应用前景.离子交换膜是钒电池的关键部件之一,目前全氟磺酸膜(如Nafion)作为钒电池隔膜的研究较多,但其阻钒性能较差且价格昂贵.
Several PAN-based felts are investigated for the Fe(Ⅱ)/Fe(Ⅲ) and Cr(Ⅲ)/Cr (Ⅱ) redox couples.These materials are activated by hot air treatment before or after graphitization process in order to vary t
Using SiO and dopamine as raw materials, a new SiO/C anode composite is successfully synthesized via Sol-gel and subsequent pyrolysis.X-ray diffraction (XRD) , scanning electron microscope (SEM) are u
As lithium-ion battery anode materials, silicon has the highest specific capacity.In order to restrain pure silicons serious volume change and enhance its electrochemical performance, Si/SiO2 composit
As a new alternative energy, supercapacitors have attracted considerable attention in recent years due to their ability to fast charge/discharge, higher energy density, and long cycle life.1 As we all
In this work, MnO2/GO (graphene oxide) composites with novel multilayer nanoflake structure, and a carbon material derived from Artemia cyst shell with genetic 3D hierarchical porous structure (HPC),
镍锰锂离子电池由于其高能量密度、高功率等优异特性将是新能源汽车及储能领域发展的重要方向之一.电解液作为锂离子电池的重要组成部分,起到了支撑电化学反应过程的作用.目前商业化电解液电化学窗口大多为4.5V,可以满足磷酸铁锂、锰酸锂、钴酸锂、三元材料等常规电池的使用要求,但是并不能很好满足镍锰电池4.9V电化学窗口的要求.