Highly effective anode structure in a direct formic acid fuel cell

Uhm, Sunghyun; Kwon, Young-Hyuk; Chung, Sung Taik; Lee, Jae Kwang

doi:10.1016/j.electacta.2008.02.052

Cited by 46 publications

(36 citation statements)

References 42 publications

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“…In particular, formic acid/formate can be produced on Pb, In, Hg, Bi, and Sn electrodes with high selectivity [1][2][3][4][5][6][7][8][9], since hydrogen from water could be kinetically inhibited. Of late, formic acid is considered as a useful fuel for direct formic acid fuel cell (DFAFC) with high power density [10,11]. In advance, we suggested a sustainable electrochemical CO 2 regenerative system, which includes the use of waste heat from industries and renewable energy sources (i.e., solar, wind, and geothermal) for the zero emission of CO 2 with no or less extra electricity [12].…”

Section: Introductionmentioning

confidence: 99%

Formic Acid from Carbon Dioxide on Nanolayered Electrocatalyst

Kwon

Lee

2010

Electrocatal

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Formic acid is electrochemically generated from carbon dioxide (CO 2 ) on nanolayered lead (Pb) electrode.Stepwise potential deposition method is applied to prepare nanostructured Pb, composed of particles and platelets with hexagonal and cubic crystallinities. Their electrocatalytic activities in an electroreduction of CO 2 are compared. We observed higher faradaic efficiencies of 94.1% on a cubic Pb surface than that of polycrystalline Pb smooth films (52.3%) at 278 K. Analyzing the mass changes of the electrodes by electrochemical quartz crystal microbalance, the mechanistic origin of CO 2 reduction is studied, and the indirect reduction of CO 2 via H ad atoms might be more reasonable than the direct electron transfer of CO 2 molecules.

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Section: Introductionmentioning

confidence: 99%

Formic Acid from Carbon Dioxide on Nanolayered Electrocatalyst

Kwon

Lee

2010

Electrocatal

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“…Additionally, it has been proposed that severe mass transport limitations are associated to the hydrophilic character of the formic acid [8]. For these reasons, a careful material design for an efficient mass transport is necessary.…”

Section: Introductionmentioning

confidence: 99%

Formic Acid Oxidation over Hierarchical Porous Carbon Containing PtPd Catalysts

et al. 2013

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Abstract:The use of high surface monolithic carbon as support for catalysts offers important advantage, such as elimination of the ohmic drop originated in the interparticle contact and improved mass transport by ad-hoc pore design. Moreover, the approach discussed here has the advantage that it allows the synthesis of materials having a multimodal porous size distribution, with each pore size contributing to the desired properties. On the other hand, the monolithic nature of the porous support also imposes new challenges for metal loading.

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“…It is apparently that fuel crossover rate in the N-DFAFC is greater than that in the C-DFAFC since FA is more easily to enter the gap between the anode electrode and PEM in the non-pressed MEA. When increasing the FA concentration to 7.0 mol L À1 and/or 9.0 mol L À1 , the excess of FA crossover in the N-DFAFC over that in the C-DFAFC was also increased linearly, while the conductivity of FA is almost changeless with the FA concentration [28].…”

Section: Real Contribution Of Fa In Dfafcmentioning

confidence: 92%