Large-scale production of holey graphite as high-rate anode for lithium ion batteries

来源 :能源化学 | 被引量 : 0次 | 上传用户:jonh0521
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Lithium ion batteries (LIBs) have been widely used in portable and smart devices because of their high energy densities, long cycle life and environmental friendliness.In order to meet the evergrowing demand for human-beings utilizing electronic devices,electric vehicles and energy storage grids, it requires LIBs with much higher power and energy densities [1].As a core of LIBs, the electrode (including cathode and anode) materials largely determine the development of LIBs.Over the past decades, a large number of anode candidates have been developed to replace graphite,the most commonly used commercial anode, with the limited theoretical capacity (372 mAh g-1) and poor rate capability.Among the candidates, graphene and its analogues (e.g., graphene derivatives and their related composites) have attracted great attention owing to their overwhelming physical properties of large surface areas, high electrical conductivities, excellent mechanical flexibilities, as well as chemical stabilities [2].Despite the high theoretical capacity and promising electrochemical performances reported, the charge/mass-transfer capability of graphene based materials as anodes for LIBs remains challenges [3].One of the great challenges is the strong van der Waals interactions between graphene nanosheets leading to the easy restack and agglomeration during the electrode preparation and discharge-charge process.
其他文献
该文系统介绍了铝用阴极带盖炭素焙烧炉节能工艺和燃烧架改造技术,包括进口燃烧架参数的计算、培烧工艺制度调整与变换、炉体及炉盖密封和节能效果等。供炭素行业同行参考。
循环流化床锅炉炉内喷钙是一种简单、经济的脱硫方式,要实现较高的脱硫效率,需要对各环节、因素进行综合分析控制。本文通过研究讨论提出从石灰石品质、输送系统可靠性和炉内反
会议
总结了阳离子的交换对树脂在产生中遇到的各种污染情况,分析了引起树脂污染的各种原因,介绍了判断各种污染的方法,在此基础上总结了国内外有关的复苏树脂的各种方法,为水处理中
大同煤矿集团有限责任公司是较为典型的企业管理社会保险单位,现有参保单位52个(含股份),参保人员23万。由于五个险种各自为政,管理效率低下;同时,由于数据库不完善,基础数
微矿集团泗河煤矿是鲁西辖区为数不多的薄煤层开采矿井。薄煤层工作面采高小,劳动负荷大。由于矿井受地质条件的影响原设计的支护方式已不能满足现场施工的需要。矿井根据实际
会议
北宿煤矿矿井水处理工程设计规模为5000m3/d,采用混凝反应、澄清、过滤及消毒工艺,出水指标甚至达到。矿井水处理复用后,该矿关闭原有地表水所有水深井,将中水复用于洗浴、冲厕
会议
Nitrogen-rich porous carbonaceous materials have shown great potential in energy storage and conversion applications due to their facile fabrication,high electr
炒房有功专家观点薛兆丰:重税岂能压房价古往今来,征税从不压低商品的价格。相反,征税必然引发三个事与愿违的结果:一是挫伤供应商的积极性,使本来就稀缺的商品进一步减少供
作为企业如何减少废物排放,节约矿山资源,建设绿色矿山是增加社会、经济效益的重要课题。本文通过对微山湖矿业集团有限公司泗河煤矿矿井水综合利用情况的探讨,以推动整个矿井
在传统矿井污水净化处理的基础上,采用了大量的新设备、新技术,其中,DA863高效过滤器、无密封自吸泵等水处理设备在煤矿井下的应用,属国内首例。所有液位控制系统、主要机电设
会议