نتایج جستجو برای: lithium cation

تعداد نتایج: 103170  

Journal: :Nanoscale 2012
Peiqi Wang Dan Zhang Feiyue Ma Yun Ou Qian Nataly Chen Shuhong Xie Jiangyu Li

Carbon nanofibers (CNFs) have been synthesized from thermoplastic polyvinylpyrrolidone (PVP) using electrospinning in combination with a novel three-step heat treatment process, which successfully stabilizes the fibrous morphology before carbonization that was proven to be difficult for thermoplastic polymers other than polyacrylonitrile (PAN). These CNFs are both mesoporous and microporous wit...

1991
S.K. Khandelwal

Honourable members of the Chair, distinguished guests, members of the Indian Psychiatric Society, ladies and gentlemen. I feel privileged today in addressing you on the occasion of delivering of prestigious Tilak Venkoba Rao Oration. I am thankful to the Indian Psychiatric Society for providing me with this opportunity. I pay humble respect to late Tilak Venkoba Rao in whose memory Professors V...

Journal: :Chemical communications 2014
Yuzhen Han Pengfei Qi Siwu Li Xiao Feng Junwen Zhou Haiwei Li Shuangyue Su Xingguo Li Bo Wang

A general method of preparing nanocomposites from a metal-organic framework coated with hydroxyl, pyrrolyl and/or carboxyl functionalized organics is introduced. Pyrolysis of these nanocomposites gives anode materials with improved discharge capacity (750 mA h g(-1)) and cyclability. They also show enhanced Coulombic efficiency over the initial 5-10 cycles and decreased internal impedance.

Journal: :Nanoscale 2015
Xianghong Liu Jun Zhang Wenping Si Lixia Xi Steffen Oswald Chenglin Yan Oliver G Schmidt

Amorphous SnO2 nanomembranes as anodes for lithium ion batteries demonstrate a long cycling life of 1000 cycles at 1600 mA g(-1) with a high reversible capacity of 854 mA h g(-1) and high rate capability up to 40 A g(-1). The superior performance is because of the structural features of the amorphous SnO2 nanomembranes. The nanoscale thickness provides considerably reduced diffusion paths for L...

2017
Jin Xie Jie Zhao Yayuan Liu Haotian Wang Chong Liu Tong Wu Po-Chun Hsu Dingchang Lin Yang Jin Yi Cui

2014
Haegyeom Kim Kyu-Young Park Jihyun Hong Kisuk Kang

Herein, we propose an advanced energy-storage system: all-graphene-battery. It operates based on fast surface-reactions in both electrodes, thus delivering a remarkably high power density of 6,450 W kg(-1)(total electrode) while also retaining a high energy density of 225 Wh kg(-1)(total electrode), which is comparable to that of conventional lithium ion battery. The performance and operating m...

Journal: :Chemical communications 2015
Chuan-Yin Jin Ming Hu Xun-Liang Cheng Fan-Xing Bu Li Xu Qing-Hong Zhang Ji-Sen Jiang

Three-dimensional (3D) macroporous CuO structures composed of ultrathin nanosheets were successfully synthesized by employing a liquid-liquid interface as a two-dimensional (2D) nano-reactor. The macroporous structure helped CuO to retain the exposed surface during reactions, thus significantly enhancing the long term cycling performance both in photocatalysis and lithium ion batteries.

2017
Suk-Woo Lee Hyun-Kyung Kim Myeong-Seong Kim Kwang Chul Roh Kwang-Bum Kim

Li5FeO4/carbon nanotube (LFO/CNT) composites composed of sub-micron sized LFO and a nanocarbon with high electrical conductivity were successfully synthesized for the use as lithium ion predoping source in lithium ion cells. The phase of LFO in the composite was found to be very sensitive to the synthesis conditions, such as the heat treatment temperature, type of lithium salt, and physical sta...

2015
Junli Shi Yonggao Xia Zhizhang Yuan Huasheng Hu Xianfeng Li Huamin Zhang Zhaoping Liu

Separators with high reliability and security are in urgent demand for the advancement of high performance lithium ion batteries. Here, we present a new and practical porous membrane with three-dimension (3D) heat-resistant skeleton and high curvature pore structure as a promising separator candidate to facilitate advances in battery safety and performances beyond those obtained from the conven...

2013
Jiantie Xu Shixue Dou Huakun Liu Liming Dai

nt matter & 2013 0.1016/j.nanoen.2 thor. uthor. Tel.: +1 216 . : [email protected] (L. Dai). Abstract The recent progress and future development of cathode materials for lithium ion batteries have been critically reviewed in this article. We have given some critical opinions and rational ideas regarding the development of cathode materials to dramatically reduce the cost and increase the efficienc...

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