,In-situ synthesis of interconnected SWCNT/OMC framework on silicon nanoparticles for high performan

来源 :绿色能源与环境(英文) | 被引量 : 0次 | 上传用户:hewu0802
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
In spite of silicon has a superior theoretical capacity, the large volume expansion of Si anodes during Li+insertion/extraction is the bottle neck that results in fast capacity fading and poor cycling performance. In this paper, we report a silicon, single-walled carbon nanotube, and ordered mesoporous carbon nanocomposite synthesized by an evaporation-induced self-assembly process, in which silicon nanoparticles and single-walled carbon nanotubes were added into the phenolic resol with F-127 for co-condensation. The ordered mesoporous carbon matrix and single-walled carbon nanotubes network could effectively accommodate the volume change of silicon nanoparticles, and the ordered meso-porous structure could also provide efficient channels for the fast transport of Li-ions. As a consequence, this hybrid material exhibits a reversible capacity of 861 mAh g-1 after 150 cycles at a current density of 400 mA g-1. It achieves significant improvement in the electro-chemical performance when compared with the raw materials and Si nanoparticle anodes.
其他文献
现在手机配备5英寸高清屏已经成了主流,但有时我们还是会觉得屏幕有点小,比如处理文档,玩游戏时,于是华硕PadFone Infinity(A80)无限变形设计手机出现了,只要将它插入扩展基
In this work, with the purpose to explore the coordination chemistry of calcium complexes which could work as a partial model of man-ganese-calcium cluster, a s
对于PC用户来说,对于Intel in Side一直情有独钟,虽然英特尔进入手机领域比较晚,但是经过改进,第二代移动处理器明显要比第一代进步不少,不论是在处理数据的能力,还是在耗电
Rechargeable alkali metal-air batteries are considered as the most promising candidate for the power source of electric vehicles (EVs) due to their high energy
Searching low cost and non-precious metal catalysts for high-performance oxygen reduction reaction is highly desired. Herein, Co nano-particles embedded in nitr
Energy has always been the most conceed topic in the world due to the large consumption. Various types of energy have been exploited and developed to enhance th
会计案例教学法是会计专业教学的一种行之有效的教学模式,为培养应用型会计人才提供了一条有效的途径。对于激发学生的创造性思维,提高学生分析问题、解决问题的能力等方面具
上世纪30年代西方经济大萧条,凯恩斯提出了国家干预经济以摆脱衰退的策略,除加大国家投资外,建立完善的社会保障机制也成为其中的重要思想。目前,在金融危机的冲击下,社会保
Microalgae are considered a promising feedstock for the production of food ingredients, cosmetics, pharmaceutical products and biofuels. The energy intensity of
Owing to almost unmatched volumetric energy density, Li-based batteries have dominated the portable electronic industry for the past 20 years. Not only will tha