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The ultrasonic modification of thermodynamic and kinetic regularity of lithium intercalation in talc

Progress in Natural Science:Materials International 2014年第4期24卷 397-404页

作者： O.V.Balaban I.I.Grygorchak R.М.Peleshchak О.V.Kuzyk О.О.Dan’kiv Lviv Polytechnic National University Drohobych Ivan Franko State Pedagogical University

Influence of the ultrasound on talc(Mg3Si4O10(OH)2) cathode material was experimentally *** Gibbs’ energy change of the Lit-intercalation process,the diffusion coefficient in LixMg3Si4O10(OH)2,the charge transfer resistance and the capacitance of the electric double layer were studied in electrochemical cells,based on initial and ultrasonic treated *** obtained results were interpreted within the nonlinear diffusion-deformation model,which involved formation of vacancy nanoclusters under ultrasonic influence at temperatures lower than a critical value.

关键词： Talc lithium intercalation Gibbs’ energy Diffusion coefficient Deformation Vacancy

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lithium-assisted exfoliation of pristine graphite for few-layer graphene nanosheets

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Nano Research 2015年第3期8卷 801-807页

作者： Minwei Xu Huiting Sun Cai Shen Sen Yang Wenxiu Que Yin Zhang Xiaoping Song MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Xi'an Jiaotong University Xi'an 710049 China Electronic Materials Research Laboratory International Center for Dielectric Research Xi'an Jiaotong University Xi'an 710049 China Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China School of Materials Science and Engineering Tongji University Shanghai 201804 China

A lithium-assisted approach has been developed for the exfoliation of pristine graphite, which allows the large-scale preparation of few-layer graphene nanosheets. The process involves an unexpected physical insertion and exfoliafion, and the graphene nanosheets prepared by this method reveal undisturbed sp2-hybridized structures. A possible two-step mechanism, which involves the negative charge being trapped around the edges of the graphite layers and a subsequent lithiation process, is proposed to explain the insertion of lithium inside the graphite interlayers. If necessary, the present exfoliation can be repeated and thinner （single or 2-3 layer） graphene can be achieved on a large scale. This simple process provides an efficient process for the exfoliation of pristine graphite, which might promote the future applications of graphene.

关键词： graphene few-layer lithium intercalation exfoliation

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Curie and Pauli Spins in lithium Intercalated MCMB

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Chinese Chemical Letters 2001年第2期12卷 163-164页

作者： Zhen Ming DU Lin ZHUANG Jun Tao LU Department of Chemistry Wuhan UniversityWuhan 430072

The ESR signal of lithium intercalated MCMB can be well simulated by combination of a Lorentz curve and a Gauss curve. The ESR intensity of the Lorentz component is essentially independent of temperature while the Gauss component shows a linear change with the reciprocal of temperature, indicative of Pauli spin and Curie spin, respectively. The former is probably associated with the ordered (graphitized) structures while the latter with the disordered structures in the sample.

关键词： lithium intercalation carbon ESR Curie spins Pauli spins

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The Discharge and Charge Behavior of the Pb-Birnessite in LiOH Aqueous Solution

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Wuhan University Journal of Natural Sciences 2004年第6期9卷 957-961页

作者： ZHUXin-gong WUZhi-yuan ZHAOYong WANGMin CollegeofChemistryandMolecularSciences WuhanUniversityWuhan430072HubeiChina

The Pb-birnessite was prepared by ion exchange from K-birnessite, which was synthesized by calcination of KMnO4. Measure methods of SEM (scanning electron microscopy), XRD (X-ray diffraction), TGA (thermogravimetric analyse), AAS (atomic absorption spectrometry), slow-scanning cyclic voltammetry and galvanostatic step discharge/charge are applied. Potentiostatic step method is used for the determination of a chemical diffusion coefficientD is Li+. XRD patterns indicate the Pb-birnessite has layered structure. Slow-scanning voltammograms show the occurrence of a single-phase redox reaction. The galvanostatic discharge/charge curves indicate the Pb-birnessite has better rechargeability at a high discharge/charge rate. Li+ can reversibly intercalate into and de-intercalate from the Pb-birnessite during discharge and charge. Pb between the layers stabilized the layered structure and prevented partially the conversion to spinel-like structures. The average value of the chemical diffusion coefficientD of Li+ intercalated into the Pb-birnessite is 8.24×10?11 cm2·s?1. Key words Birnessite - Pb2+-doped - single-phase redox reaction - lithium intercalation CLC number O 646.54 Foundation item: Supported by the National Natural Science Foundation of China (20077020)Biography: ZHU Xin-gong (1979-), male, Master, research direction: electrochemistry.

关键词： Birnessite Pb2+-doped single-phase redox reaction lithium intercalation

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New Superionic Memory Devices Can Provide Clues to the Human Memory Structure and to Consciousness

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Journal of Applied Mathematics and Physics 2023年第2期11卷 377-376页

作者： Hans Hermann Otto Materialwissenschaftliche Kristallographie Clausthal University of Technology Clausthal-Zellerfeld Lower Saxony Germany

Since the work of Penrose and Hameroff the possibility is discussed that the location of human memory and consciousness could be connected with tubulin microtubules. If one would use superionic nano-materials rolled up to microtubules with an electrolyte inside the formed channels mediating fast ionic exchange of protons respectively lithium ions, it seems to be possible to write into such materials whole image arrays (pictures) under the action of the complex electromagnetic spectrum that composes these images. The same material and architecture may be recommended for super-computers. Especially microtubules with a protofilament number of 13 are the most important to note. We connected such microtubules before with Fibonacci nets composed of 13 sub-cells that were helically rolled up to deliver suitable channels. Our recent Fibonacci analysis of Wadsley-Roth shear phases such as niobium tungsten oxide , exhibiting channels for ultra-fast lithium-ion diffusion, suggests to use these materials, besides super-battery main application, in form of nanorods or microtubules as effectively working superionic memory devices for computers that work ultra-fast with the complex effectiveness of human brains. Finally, we pose the question, whether dark matter, ever connected with ultrafast movement of ordinary matter, may be responsible for synchronization between interactions of human brains and consciousness.

关键词： Memory Device Niobium Tungsten Oxide Crystallographic Shear lithium intercalation Superionicity Super Battery Fibonacci Nets Fibonacci Stoichiometry Tubulin Microtubules

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