Results 241 to 250 of about 4,361,664 (283)

Superconductivity of the potassium graphite intercalation compounds

Solid State Communications, 1986
Abstract The stratified compound C 4 K has been found to pass to a superconducting state with the onset of transition at T c = 1.3 K .
E.P. Wolski, O.V. Zharikov, A.V. Palnichenko, V.V. Avdeev, V.Z. Mordkovich, K.N. Semenenko   +5 more
openaire   +1 more source

Reaction of Ammonia with Graphite-Potassium Compounds

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1994
Reaction of ammonia vapor with a KC 8 GIC and treatment (vacuum and heating) produces a new second stage GIC: K(NH 3 ) 0.5 C 8 with di=815 pm. The stage 1 GIC can be obtained by reaction with potassium vapor. Similar treatment with KC 24 leads to a stage 2 GIC:K(NH 3 ) 1.3 C 24 with a smaller di=648 pm.
Lotfi Reghai, Herve Fuzellier
openaire   +1 more source

New Graphite Intercalation Compounds : The Potassium Pnictographitides

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1998
Abstract New first stage ternary compounds associating potassium and phosphorous were synthesized in liquid potassium containing a few atomic percent of red phosphorous. The structural arrangement of these alkali metal rich phases was studied by X-Ray diffraction. Electrical measurements parallel and perpendicular to the c-axis were carried out between
Claire Hérold, Frédérique Goutfer-Wurmser, Jean-François Marěché, Philippe Lagrange   +3 more
openaire   +1 more source

Unraveling the Potassium Storage Mechanism in Graphite Foam

Advanced Energy Materials, 2019
Potassium‐intercalated graphite intercalation compounds (K‐GICs) are of particular physical and chemical interest due to their versatile structures and fascinating properties.
Jilei Liu, Tingting Yin, Bingbing Tian, Bowei Zhang, Cheng Qian, Zhiqiang Wang, Lili Zhang, P. Liang, Zhen Chen, Jiaxu Yan, Xiaofeng Fan, Jianyi Lin, Xiaohua Chen, Yizhong Huang, K. Loh, Z. Shen   +15 more
semanticscholar   +1 more source

Superconductivity in graphite-potassium intercalation compound C8K

Solid State Communications, 1978
Abstract The critical temperature T c , and the angular and temperature dependences of the upper critical field H c2 in highly oriented pseudo-single crystals of C 8 K have been studied by using a magnetic susceptibility measurement. The magnetic susceptibility abruptly changes around 139 mK at zero field.
Y. Koike, H. Suematsu, K. Higuchi, S. Tanuma   +3 more
openaire   +1 more source

The stability of potassium-graphite deintercalation compounds

Carbon, 1996
We have synthesized K-GICs (potassium-graphite intercalation compounds) by the modified two-bulb method. The compounds were kept under a stabilization agent (liquid paraffin). The stage transition of K-GDICs (graphite deintercalation compounds), owing to the slow diffusion of water, was observed by X-ray diffraction measurements.
Won-Chun Oh, Sung-Jun Cho, Young-Shin Ko
openaire   +1 more source

Recent progress in application of cobalt-based compounds as anode materials for high-performance potassium-ion batteries

Rare Metals, 2022
Fei Yuan, Yafei Shao, Bo Wang, Yu-Sheng Wu, Di Zhang, Zhaojin Li, Yimin A. Wu   +6 more
semanticscholar   +1 more source

Potassium compounds-Al2O3 catalyst synthesized by using the sol-gel urea combustion method for transesterification of sunflower and waste cooking oils

Biomass Conversion and Biorefinery, 2020
Kavan Ghavami, F. Akhlaghian, F. Rahmani
semanticscholar   +1 more source

Exploration of potassium silicide compounds under high pressure

Physica B: Condensed Matter, 2021
Xinyue Zhang, Wenjing Li, Lili Gao, Xiangyue Cui, Dandan Zhang, Yang Liu, Yafan Xi, Miao Zhang, Feng Peng   +8 more
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Potassium Phosphates Compounded Injection

2022
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