The infrared absorption spectra and structure of some simpler alkoxides of lithium, sodium and potassium

Simonov, A. P.; Shigorin, D. N.; Tsareva, G. V.; Talalaeva, T. V.; Kocheshkov, K. A.

doi:10.1007/bf00614644

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…4, we have annotated the FTIR spectra of our LiEG and LiEGCO lms to our best ability, according to previous results and literature. 3,[42][43][44][45][46] The spectrum of LiEG shares a lot of characteristics with those of other metal ethylene glycoxides, 10,[40][41][42]44,46,47 and in particular with the FTIR spectra reported by Aurbach et al, 48 where the most intense peaks are caused by C-H stretches below 3000 cm À1 and a C-stretch vibration around 1080 cm À1 . In early studies reporting the synthesis of LiEG, its structure was assumed to be dilithium ethylene glycoxide.…”

Section: Resultsmentioning

confidence: 99%

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

2020

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Section: Resultsmentioning

confidence: 99%

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

2020

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“…In fact, it was found that the intensity of these peaks became higher with increasing exposure time, as shown in Figure S1 of the Supporting Information, whereas they remained almost unchanged for the MLCO film. According to previous reports, an absorption peak for Li–O bond vibration is observed at 428 cm –1 , , however, we were not able to observe such a peak due to instrument limitations.…”

Section: Resultsmentioning

confidence: 98%

Effects of Mg Doping to a LiCoO₂ Channel on the Synaptic Plasticity of Li Ion-Gated Transistors

Mallik,

Tsuruoka,

Tsuchiya

et al. 2023

ACS Appl. Mater. Interfaces

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Artificial synapses with ideal functionalities are essential in hardware neural networks to allow for energy-efficient analog computing. However, the realization of linear and symmetric weight updates in real synaptic devices has proven challenging and ultimately limits the online training capabilities of neural network systems. Herein, we investigate the effect of Mg doping on a LiCoO 2 (LCO) channel in a Li ion-gated synaptic transistor, so as to improve long-term and short-term plasticity. Two transistor structures, based on a lithium phosphorus oxynitride electrolyte, were examined by using undoped LCO and Mg-doped LCO as the channel material between the source and drain electrodes. It was found that Mg doping increased the initial channel conductance by 3 orders of magnitude, which is probably due to the substitution of Co 3+ by Mg 2+ and the compensation of hole creation. It was further found that the doped channel transistor showed good retention characteristics and better linearity of long-term potentiation and depression when voltage pulses were applied to the gate electrode. The improved retention and linearity are attributed to an extended range of the insulator-to-conductor transition by Mg doping and Li-ion extraction/insertion cooperated in the LCO channel. Using the obtained synaptic weight update, artificial neural network simulations demonstrated that the doped channel transistor shows an image recognition accuracy of ∼80% for handwritten digits, which is higher than ∼65% exhibited by the undoped channel transistor. Mg doping also improved short-term plasticity such as paired-pulse facilitation/depression and Hebbian spike timing-dependent plasticity. These results indicate that elemental doping to the channel of Li ion-gated synaptic transistors could be a useful procedure for realizing robust neuromorphic systems based on analog computing.

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“…The emergence of -CO 3 band could be due to CO 2 absorption by samples. In addition, the absorption band corresponding to Li-O bond vibrations was observed at 416 cm in lithium containing compound [39]. Recently, our group reported that the alteration of absorption band in FT-IR spectra of zinc oxide, iron oxide, and copper oxide powders after biofield treatment [40].…”

Section: Fourier Transform Infrared Spectroscopy (Ft-ir)mentioning

confidence: 96%

Physical, Atomic and Thermal Properties of Biofield Treated Lithium Powder

2015

J Adv Chem Eng

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The infrared absorption spectra and structure of some simpler alkoxides of lithium, sodium and potassium

Cited by 3 publications

References 11 publications

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

Effects of Mg Doping to a LiCoO₂ Channel on the Synaptic Plasticity of Li Ion-Gated Transistors

Physical, Atomic and Thermal Properties of Biofield Treated Lithium Powder

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The infrared absorption spectra and structure of some simpler alkoxides of lithium, sodium and potassium

Cited by 3 publications

References 11 publications

CO2-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

CO2-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

Effects of Mg Doping to a LiCoO2 Channel on the Synaptic Plasticity of Li Ion-Gated Transistors

Physical, Atomic and Thermal Properties of Biofield Treated Lithium Powder

Contact Info

Product

Resources

About

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

CO₂-based atomic/molecular layer deposition of lithium ethylene carbonate thin films

Effects of Mg Doping to a LiCoO₂ Channel on the Synaptic Plasticity of Li Ion-Gated Transistors