Electrochemical and spectroscopic measurements for stable nitroxyl radicals

Nakahara, K.; Iwasa, Shigeyuki; Iriyama, Jiro; Morioka, Yukiko; Suguro, Masahiro; Satoh, Masaharu; Cairns, Elton J.

doi:10.1016/j.electacta.2006.06.028

Cited by 76 publications

(62 citation statements)

References 6 publications

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“…A stable performance of the 7/7 + redox couple (0.3 VvsFc/Fc + , 2.8 Vv s. Mg) in MMC/G4 electrolyte marks high compatibility evident from hundreds of overlapping CV cycles (Supporting Information, Figure S38), as well as from an electrochemical performance consistent with the reversibility of TEMPO reported in other inert aprotic solutions (Supporting Information, Figures S39-S42). [19] Access to non-corrosive,o xidatively stable electrolytes also opens avenues to explore avariety of potential cathodes . .…”

Section: Methodsmentioning

confidence: 99%

An Efficient Halogen‐Free Electrolyte for Use in Rechargeable Magnesium Batteries

Tutusaus¹,

Mohtadi²,

Arthur³

et al. 2015

Angew Chem Int Ed

431

379

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Unlocking the full potential of rechargeable magnesium batteries has been partially hindered by the reliance on chloride-based complex systems. Despite the high anodic stability of these electrolytes, they are corrosive toward metallic battery components, which reduce their practical electrochemical window. Following on our new design concept involving boron cluster anions, monocarborane CB11H12(-) produced the first halogen-free, simple-type Mg salt that is compatible with Mg metal and displays an oxidative stability surpassing that of ether solvents. Owing to its inertness and non-corrosive nature, the Mg(CB11H12)2/tetraglyme (MMC/G4) electrolyte system permits standardized methods of high-voltage cathode testing that uses a typical coin cell. This achievement is a turning point in the research and development of Mg electrolytes that has deep implications on realizing practical rechargeable Mg batteries.

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Section: Methodsmentioning

confidence: 99%

An Efficient Halogen‐Free Electrolyte for Use in Rechargeable Magnesium Batteries

Tutusaus¹,

Mohtadi²,

Arthur³

et al. 2015

Angew Chem Int Ed

431

379

View full text Add to dashboard Cite

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“…(A UV absorption band was reported at 5.12 eV for an acetonitrile solution of TEMPO [8].) The shape is different in the θ = 135…”

Section: Neutral Moleculementioning

confidence: 99%

“…Important are applications connected with electron capture or transfer. Thus, the recently emerged organic radical battery [6,7] is based on the reversible electrochemical oxidation-reduction of TEMPO and similar nitroxides [8,9]. Redox reactions of TEMPO and its derivatives may be useful in dye-sensitised solar cells [10] or for overchargeprotection of lithium ion batteries [11].…”

Section: Introductionmentioning

confidence: 99%

The electronic structure of TEMPO, its cation and anion

et al. 2013

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The electronic structure of TEMPO (2,2,6,6-Tetramethylpiperidine-N-oxyl) and its cation and anion were studied experimentally using the electron spectroscopy techniques, dissociative electron attachment (DEA) spectroscopy, electron energy-loss spectroscopy, measurement of elastic and vibrational excitation (VE) cross sections and HeI photoelectron spectroscopy. The experiments were supplemented by quantum-chemical calculations of excitation energies, ionisation potential and the Franck-Condon profile of the first photoelectron band. Electron energy-loss spectra were recorded up to 12 eV and revealed a number of bands that were assigned to two valence and a number of Rydberg transitions. VE cross sections reveal a broad band in the 3-12 eV range, assigned to σ * shape resonances and signals in the 0-1 eV range, assigned to a shape resonance corresponding to a temporary capture of the incident electron in the (already singly occupied) π * orbital. Narrow threshold peaks in the VE cross sections are assigned to dipole-bound resonances. The major DEA fragment was found to be O − , with bands at 5.0 and 6.87 eV, assigned to core excited resonances.

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“…또한 전극이 고분자물질로 구성되어 유연성이 높고, 가격이 저렴하며, 다양한 고분자 설계가 가능한 장점 을 가지고 있다. [10][11][12] 하지만 니트록실 라디칼계 고분 자 물질은 자체의 전기전도성이 낮아 전극제조에 많 은 양의 도전재를 함께 사용해야 하며 이는 용량감소 의 원인이 되고 있다. [13][14][15][16] …”

Section: 서 론unclassified

Synthesis of Organic Radical Copolymers Based on Polystyrene and Their Performance for Batteries

Yang¹,

Ryu²

2016

Journal of the Korean Electrochemical Society

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: In this study, homo and copolymers of 2,2,6,6-tetramethyl-4-piperidyl methacrylate(TMA) and synthesized styrene derivative, 2,2,6,6-tetramethylpiperidine-4-vinylbenzyl ether(TVBE) were obtained by radical polymerization and oxidized to produce corresponding polymer radicals. The polymer radicals were mixed with carbon black, binders and coated onto Al current collector. The battery performance is then characterized by fabricating coin cells. As results, the polystyrene based organic radicals show lower oxidize efficiency and discharge capacity than methacrylate based one. However, the former shows better capacities from discharge experiments performed at 60 o C which suggests a possible way to overcome the high temperature fade out of performance in usual organic radical batteries. Also as expected, an excellent C-rate performance is observed in all the cells consisted of organic polymer radicals.

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Electrochemical and spectroscopic measurements for stable nitroxyl radicals

Cited by 76 publications

References 6 publications

An Efficient Halogen‐Free Electrolyte for Use in Rechargeable Magnesium Batteries

An Efficient Halogen‐Free Electrolyte for Use in Rechargeable Magnesium Batteries

The electronic structure of TEMPO, its cation and anion

Synthesis of Organic Radical Copolymers Based on Polystyrene and Their Performance for Batteries

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