O2 reduction by ferrocene and its derivatives in organic media in the presence of an acid, such as trichloroacetic and trifluoroacetic acids and perchloric acid, has been known for many years. Recently, O2 reduction has also been studied in biphasic systems composed of an organic solvent containing a ferrocene derivative in contact with an aqueous inorganic acid solution containing a very lipop...

10 Article history: 11 Received 30 September 2010 12 Revised 23 November 2010 13 Accepted 6 December 2010 14 Available online xxxx 1567 18 19 The dorsal medial frontal cortex (dMFC) is highly active during choice behavior. Though many models have 20 been proposed to explain dMFC function, the conflict monitoring model is the most influential. It posits that 21 dMFC is primarily involved in dete...

Direct methanol fuel cells (DMFCs) are considered to be one of the most promising candidates for portable and stationary applications in the view of their advantages such as high energy density, easy manipulation, high efficiency and they operate with liquid fuel which could be used without requiring any fuel-processing units. Electrolyte membrane of DMFC plays a key role as a proton conductor ...

In this paper, a special micro DMFC using MEMS technology is designed to work in a circumrotating condition, which providing power using inertia over-load. The designed cell is a cylinder, anode channel is inside, cathode is outside and exposes to the air. When the overload exceeds the critical value, the liquid inside reserve tank will splash and comes into the two electrodes, and then the cel...

1572-6657/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.jelechem.2009.11.029 * Corresponding author. Fax: +41 21 6933667. E-mail address: [email protected] (H.H. Girau 1 Present address: Institute of Microanalytical Syste Zhejiang University, 310058 Hangzhou, China. Molecular oxygen (O2) reduction by decamethylferrocene (DMFc) was investigated at a polarized water/ 1,2-dichloroetha...

To suppress methanol crossover in direct methanol fuel cells DMFCs , a Nafion-Bi2V0.75Sb0.25O5.4 composite membrane was prepared by recast method. Oxygen-ion conductive Bi2V0.75Sb0.25O5.4 powders were highly dispersed in a Nafion 117 membrane to physically block methanol crossover and/or chemically oxidize the methanol, which was confirmed by the difference in the methanol diffusion coefficient...

A proton exchange membrane has been developed for direct methanol fuel cell (DMFC). The nanofiber network composite membranes were prepared by interconnected network of Nafion (perfuorosulfonic acid) nanofibers that have been embedded in an uncharged and inert polymer matrix, by electro-spinning. The spinning solution of Nafion with a low concentration (1 wt% compared to Nafion) of high molecul...

This work describes an innovative electrochemical biosensor that advances its autonomy toward equipment-free design. The is powered by a passive direct methanol fuel cell (DMFC) and signals the response via electrochromic display. Briefly, anode side of DMFC power source was modified with layer developed using molecularly imprinted polymer (MIP) technology to detect sarcosine (an amino acid der...