نتایج جستجو برای: graphite intercalation compound

تعداد نتایج: 145931  

2017
Gonzalo Abellán Christian Neiss Vicent Lloret Stefan Wild Julio C Chacón-Torres Katharina Werbach Filippo Fedi Hidetsugu Shiozawa Andreas Görling Herwig Peterlik Thomas Pichler Frank Hauke Andreas Hirsch

Black phosphorus intercalation compounds (BPICs) with alkali metals (namely: K and Na) have been synthesized in bulk by solid-state as well as vapor-phase reactions. By means of a combination of in situ X-ray diffraction, Raman spectroscopy, and DFT calculations the structural behavior of the BPICs at different intercalation stages has been demonstrated for the first time. Our results provide a...

Journal: :Chemical communications 2013
Yuki Yamada Makoto Yaegashi Takeshi Abe Atsuo Yamada

We have found ultrafast Li(+) intercalation into graphite in a superconcentrated ether electrolyte, even exceeding that in a currently used commercial electrolyte. This discovery is an important breakthrough toward fast-charging Li-ion batteries far beyond present technologies.

Journal: :Processes 2023

Graphite foil (GF) compressed from exfoliated graphite (EG) is a sealing material, which used in nuclear energy and the chemical industry. The preparation of complex process, includes intercalation graphite, water washing, thermal exfoliation pressing intermediate products. conditions significantly influence structure material its physicochemical properties. Thus, aim work was to reveal correla...

2018
Olga V Sinitsyna Georgy B Meshkov Anastasija V Grigorieva Alexander A Antonov Inna G Grigorieva Igor V Yaminsky

Graphite oxide has a complex structure that can be modified in many ways to obtain materials for a wide range of applications. It is known that the graphite precursor has an important role in the synthesis of graphite oxide. In the present study, the basal-plane surface of highly annealed pyrolythic graphite (HAPG) was oxidized by Hummers' method and investigated by Raman spectroscopy and atomi...

Journal: :Chemical communications 2015
Dongping Lv Pengfei Yan Yuyan Shao Qiuyan Li Seth Ferrara Huilin Pan Gordon L Graff Bryant Polzin Chongmin Wang Ji-Guang Zhang Jun Liu Jie Xiao

The unstable interface of lithium metal in high energy density Li sulfur (Li-S) batteries raises concerns of poor cycling, low efficiency and safety issues, which may be addressed by using intercalation types of anode. Herein, a new prototype of Li-ion sulfur battery with high performance has been demonstrated by coupling a graphite anode with a sulfur cathode (2 mA h cm(-2)) after successfully...

2004
Y. F. Reynier R. Yazami

The temperature dependence of the open-circuit potential of lithium half-cells was measured for electrodes of carbon materials having different amounts of structural disorder. The entropy of lithium intercalation, DS , and enthalpy of intercalation, DH , were determined over a broad range of lithium concentrations. For the disordered carbons, DS is small. For graphite, an initially large DS dec...

Journal: :Nature communications 2014
Wenzhong Bao Jiayu Wan Xiaogang Han Xinghan Cai Hongli Zhu Dohun Kim Dakang Ma Yunlu Xu Jeremy N Munday H Dennis Drew Michael S Fuhrer Liangbing Hu

Various band structure engineering methods have been studied to improve the performance of graphitic transparent conductors; however, none has demonstrated an increase of optical transmittance in the visible range. Here we measure in situ optical transmittance spectra and electrical transport properties of ultrathin graphite (3-60 graphene layers) simultaneously during electrochemical lithiatio...

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