Investigation of DMAB oxidation at a gold microelectrode in base

被引：38

作者：

Nagle, LC ^{[1
]}

Rohan, JF ^{[1
]}

机构：

[1] Natl Univ Ireland, Tyndall Natl Inst, Cork, Ireland

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2005年 / 8卷 / 05期

关键词：

D O I：

10.1149/1.1883905

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A gold microdisk has been used to determine the diffusion coefficient (D) for dimethylamine borane (DMAB) in concentrated alkaline solution. Two steady-state oxidation waves were resolved through the use of microelectrodes. Using the D value determined, the coulomb number for both oxidation waves was shown to be 3. The first wave may be further resolved in dilute solutions revealing three one-electron steps. The concentration range wherein the maximum coulombic efficiency for DMAB oxidation on gold may be achieved is demonstrated. An oxidation pathway with a variable coulomb number is suggested. (C) 2005 The Electrochemical Society.

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页码：C77 / C80

页数：4

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共 26 条

[1] A novel high power density borohydride-air cell [J].

Amendola, SC ;

Onnerud, P ;

Kelly, MT ;

Petillo, PJ ;

Sharp-Goldman, SL ;

Binder, M .

JOURNAL OF POWER SOURCES, 1999, 84 (01) :130-133

[2] The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules [J].

AvramovIvic, M ;

Jovanovic, V ;

Vlajnic, G ;

Popic, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 423 (1-2) :119-124

[3] OXIDATION OF SOME REDUCING AGENTS USED IN ELECTROLESS PLATING BATHS AT GOLD ANODES IN AQUEOUS-MEDIA [J].

BURKE, LD ;

LEE, BH .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 1992, 22 (01) :48-56

[4] Effect of sonication and vibration on the electroless Ni-B deposited film from acid bath [J].

Chiba, A ;

Haijima, H ;

Kobayashi, K .

SURFACE & COATINGS TECHNOLOGY, 2003, 169 :104-107

[5] Preparation of silica thin films by reduction of aqueous solution [J].

Chigane, M ;

Izaki, M ;

Shinagawa, T ;

Ishikawa, M .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2004, 7 (03) :D1-D3

[6] Chemical vapor generation by tetrahydroborate(III) and other borane complexes in aqueous media - A critical discussion of fundamental processes and mechanisms involved in reagent decomposition and hydride formation [J].

D'Ulivo, A .

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, 2004, 59 (06) :793-825

[7] DIRECT DETERMINATION OF DIFFUSION-COEFFICIENTS BY CHRONOAMPEROMETRY AT MICRODISK ELECTRODES [J].

DENUAULT, G ;

MIRKIN, MV ;

BARD, AJ .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 308 (1-2) :27-38

[8] POLAROGRAPHY FO TETRAHYDROBORATE ION . EFFECT OF HYDROLYSIS ON SYSTEM [J].

GARDINER, JA ;

COLLAT, JW .

INORGANIC CHEMISTRY, 1965, 4 (08) :1208-&

[9] KINETICS OF STEPWISE HYDROLYSIS OF TETRAHYDROBORATE ION [J].

GARDINER, JA ;

COLLAT, JW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1965, 87 (08) :1692-&

[10] Electrooxidation of borohydride on platinum and gold electrodes: implications for direct borohydride fuel cells [J].

Gyenge, E .

ELECTROCHIMICA ACTA, 2004, 49 (06) :965-978