High-Performance Li-ion Batteries and Sup er-capacitors Based on Prosp ective 1-D Nanomaterials

来源 :Nano-Micro Letters | 被引量 : 0次 | 上传用户:chenglian_chen
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
One-dimensional(1-D) nanomaterials with superior specific capacity, higher rate capability, better cycling peroperties have demonstrated significant advantages for high-performance Li-ion batteries and supercapacitors. This review describes some recent developments on the rechargeable electrodes by using 1-D nanomaterials(such as Li Mn_2O_4 nanowires, carbon nanofibers, Ni Mo O_4 · n H_2O nanorods, V_2O_5 nanoribbons,carbon nanotubes, etc.). New preparation methods and superior electrochemical properties of the 1-D nanomaterials including carbon nanotube(CNT), some oxides, transition metal compounds and polymers, and their composites are emphatically introduced. The VGCF/Li Fe PO_4/C triaxial nanowire cathodes for Li-ion battery present a positive cycling performance without any degradation in almost theoretical capacity(160 m Ah/g).The Si nanowire anodes for Li-ion battery show the highest known theoretical charge capacity(4277 m Ah/g),that is about 11 times lager than that of the commercial graphite(~372 m Ah/g). The SWCNT/Ni foam electrodes for supercapacitor display small equivalent series resistance(ESR, 52 m?) and impressive high power density(20 k W/kg). The advantages and challenges associated with the application of these materials for energy conversion and storage devices are highlighted. One-dimensional (1-D) nanomaterials with superior specific capacity, higher rate capability, better cycling peroperties have demonstrated significant advantages for high-performance Li-ion batteries and supercapacitors. This review describes some recent developments on the rechargeable electrodes by using 1- D nanomaterials (such as Li Mn 2 O 4 nanowires, carbon nanofibers, Ni Mo O 4 · n H 2 O nanorods, V 2 O 5 nanoribbons, carbon nanotubes, etc.). New preparation methods and superior electrochemical properties of the 1-D nanomaterials including carbon nanotubes Some oxides, transition metal compounds and polymers, and their composites are emphatically introduced. The VGCF / Li Fe PO 4 / C triaxial nanowire cathodes for Li-ion battery present a positive cycling performance without any degradation in almost theoretical capacity (160 m Ah / g The Si nanowire anodes for Li-ion battery show the highest theoretical theoretical charge capacity (4277 m Ah / g), that is about 11 times lager than that of the co The advantages of using SWCNT / Ni foam electrodes for supercapacitor display small equivalent series resistance (ESR, 52 m?) and impressive high power density (20 kW / kg) the application of these materials for energy conversion and storage devices are highlighted.
其他文献
随着信息技术的不断发展,各大院校也纷纷开始进行信息化建设。高校实现信息化建设不仅可以满足时代发展的要求,同时也可以确保高校教育活动顺利开展。但是也应当要认识到的是,信息技术自身存在着一定的安全问题,所以要做好信息化建设工作,找出存在的问题,采取有效的措施。基于此本文针对高校信息化建设安全问题进行了简要阐述,并提出几点个人看法,仅供参考。
We report on the synthesis and characterizations of TiO2 nanoparticles embedded in polyamide-6 composite nanofibers by using electrospinning technique. The infl
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
【摘 要】新课程改革以来,我们一直着力追求构建一个丰富学生知识、发展学生能力、完善学生人格、提升学生智慧的课堂,这就是“智慧课堂”。想要培养“有智慧的人”,就需要培育“有智慧的课堂”,需要借用数字化手段,实现“转识成智”。本文重点阐述了“智慧课堂”的内涵、特征和理念,以及构建互动教学系统对智慧课堂的作用、数字化智慧课堂构建的功能需求等,并以杭州市大成实验学校为例,介绍了学校基于“数字化教学案”的智
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
目的 对静态培养条件下构建的同种生物组织工程瓣(TEHV)进行脉动流培养,增强种植的内皮细胞(ECs)抗切应力,改良其生物学性能,为今后动物实验和临床的实际应用提供技术路线.方法将静态培养的、再内皮化TEHV置入自行设计构建的脉动流培养装置中进行培养,在培养介质流量和压力逐渐增加的条件下培养14 d,不同时点取瓣膜片样本进行硝酸银染色立体显微镜以及扫描电镜观察、摄片.瓣膜表面内皮细胞(ECs)覆盖
本文为对当前高校校园网用户上网认证存在的安全问题,结合本校多校区多出口的校园网现状,提出了以安全为前提、准入准出为思路、用户账户统一管理为原则,应用当前主流成熟技术来设计并实现校园网用户统一安全认证上网。认证系统部署后,经过一年多的运行、检验,获得了较好的效果,既满足了校园网对上网用户统一安全管理的要求,也满足了校园网用户便捷、策略化的上网需求。