Electrode kinetic parameters for the redox systems Mo(CN)83−/Mo(CN)84−, IrCl62−/IrCl63−, Fe(phen)33+/Fe(phen)32+ and Fe(C5H5)2+/Fe(C5H5)2

Saji, Tetsuo; Maruyama, Yukio; Aoyagui, Shigeru

doi:10.1016/s0022-0728(78)80369-6

Cited by 68 publications

(42 citation statements)

References 10 publications

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“…One of the best known stable nitroxide is 2,2,6,6-tetramethyl piperidine-1-oxyl (TEMPO, Figure 7 ), which is widely used as a probe for biology system, a radical trap, a catalyst in organic oxidation reactions, etc. [ 96 ] These values are even higher than that for ferrocene ( ∼ 10 − 2 ), a standard molecule commonly used as an internal calibrator in electrochemical chemistry owing to its excellent reversibility, and comparable to the simple inorganic cation Cu + (we do note, however, that a higher value of 7 × 10 − 1 for ferrocene was reported by Aoyagui's group [ 97 ] ). [ 95 ] Only the oxidation process of the nitroxyl radical was utilized, corresponding to a one-electron transfer per repeating unit and a C theo of 111 mAh g − 1 .…”

Section: Working Principlesmentioning

confidence: 57%

Organic Electrode Materials for Rechargeable Lithium Batteries

Liang

Tao

Chen

2012

Advanced Energy Materials

1,174

1,016

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Organic compounds offer new possibilities for high energy/power density, cost-effective, environmentally friendly, and functional rechargeable lithium batteries. For a long time, they have not constituted an important class of electrode materials, partly because of the large success and rapid development of inorganic intercalation compounds. In recent years, however, exciting progress has been made, bringing organic electrodes to the attention of the energy storage community. Herein thirty years' research efforts in the fi eld of organic compounds for rechargeable lithium batteries are summarized. The working principles, development history, and design strategies of these materials, including organosulfur compounds, organic free radical compounds, organic carbonyl compounds, conducting polymers, non-conjugated redox polymers, and layered organic compounds are presented. The cell performances of these materials are compared, providing a comprehensive overview of the area, and straightforwardly revealing the advantages/disadvantages of each class of materials.

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Section: Working Principlesmentioning

confidence: 57%

Organic Electrode Materials for Rechargeable Lithium Batteries

Liang

Tao

Chen

2012

Advanced Energy Materials

1,174

1,016

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“…6.2 Å, 40,41 suggesting that the size of the pinholes is not affecting the heterogeneous molecular recognition process, which is distinctly experienced by the probe molecules. Similar behavior was observed by Chailapakul et al 40 for a mixed monolayer of 4-hydroxythiophenol and 1-hexadecanethiol on gold and using [Fe(CN) 6 ] 4-and [Ru(NH 3 ) 6 ] 3+ as probe molecules.…”

Section: Inorganic Complexes As Probe Moleculesmentioning

confidence: 99%

5-(4-pyridinyl)-1,3,4-oxadiazole-2-thiol on gold: SAM Formation and electroactivity

Paulo

Silva

Pinheiro

et al. 2008

J. Braz. Chem. Soc.

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O composto 5-(4-pyridinyl)-1,3,4-oxadiazole-2-thiol (Hpyt) adsorve espontaneamente sobre ouro formando SAMs ("Self-Assembled Monolayers") que, de acordo com os resultados eletroquímicos e de STM ("Scanning Tunneling Microscopy"), contêm poros através dos quais as moléculas dos complexos [Fe(CN) 6 ] 4-, a dependência da corrente faradáica com o pH da solução eletrolítica permitiu o cálculo do pKa da molécula de Hpyt adsorvida sobre ouro (4,2). Os parâmetros termodinâmicos, H ads and G ads , para o processo de adsorção desta molécula foram estimados em -20,01 e -39,39 kJ mol -1 , respectivamente, utilizando-se o modelo de Langmuir. O processo redox da metaloproteína citocromo c foi estudado utilizando-se a SAM de Hpyt. A constante de velocidade heterogênea de transferência de elétrons foi calculada em 2,29 10 -3 cm s -1 .5-(4-pyridinyl)-1,3,4-oxadiazole-2-thiol (Hpyt) spontaneously adsorbs on gold forming SAMs (self-assembled monolayers) that, based on STM (Scanning Tunneling Microscopy) and electrochemical data, contain pinholes through which [Fe(CN) 6 ] 4-and [Ru(NH 3 ) 6 ] 3+ probe molecules access the underlying gold electrode. For the former molecule, the dependence of the faradaic current on the electrolyte solution pH value allowed the evaluation of the surface pKa as 4.2. The thermodynamic parameters H ads and G ads for the Hpyt adsorption process could be described by the Langmuir model and were calculated as -20.01 and -39.39 kJ mol -1 , respectively. Electrodic redox reaction of cytochrome c metalloprotein was accessed by using the Hpyt SAM with a heterogeneous electron transfer rate constant of 2.29 10 -3 cm s -1 .

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“…To this end, the redox behaviour of the model FcjFc + system has been subject of many electrochemical reports. The electrochemical oxidation of ferrocene to the monocation ferrocenium, has been investigated in numerous solvents, including ethanol, propylenecarbonate, dimethylformamide [6,7], methanol [8], nitrobenzene, tetrahydrofuran, pyridine, benzonitrile [5], chloroform [9], dimethylsulfoxide [6], acetone [10] and commonly, acetonitrile [4,6,[10][11][12][13][14]. The majority of these studies have been undertaken at room temperature, with the exception of that by Crooks et al who studied the system at temperatures between 298 and 573 K [13].…”

Section: Introductionmentioning

confidence: 99%