A miniature passive direct formic acid fuel cell based twin-cell stack with highly stable and reproducible long-term discharge performance

Peng, Hong; Liao, Shijun; Zeng, Jianhuang; Zhong, Yiliang; Liang, Zhenxing

doi:10.1016/j.jpowsour.2010.08.111

Cited by 15 publications

(6 citation statements)

References 36 publications

(44 reference statements)

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“…Undoubtedly, the simpler configuration of the passive DFAFC (relative to active one) can meet the stringent requirements of portable applications such as portability and low cost. In our previous works [12,13], we have successfully demonstrated the possibility of fabrication single and twin DFAFC using printed circuit board (PCB) as end plate and current collector. A line of parameters have been optimized and the cell showed satisfactory performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of Pt/C, Pd/C and PdPt/C anode catalysts on the performance and stability of air breathing direct formic acid fuel cells

Peng

Luo

Liao

et al. 2011

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Effects of Pt/C, Pd/C and PdPt/C anode catalysts on the performance and stability of air breathing direct formic acid fuel cells

Peng

Luo

Liao

et al. 2011

International Journal of Hydrogen Energy

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“…In addition to the ADT recorded in a typical three‐electrode system (half‐cell), a DFAFC full‐cell test is more valuable for a comprehensive evaluation, as it can judge the performance of electrocatalysts in a real working environment . Figure c shows the steady‐state polarization and power‐density curves of a constructed MEA based DFAFC by using three samples as anode electrocatalysts, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to the ADT recorded in a typical three-electrode system (half-cell), a DFAFC full-cell test is more valuable for a comprehensive evaluation, as it can judge the performance of electrocatalysts in a real working environment. [47][48][49][50][51][52] Figure 4c shows the steady-state polarization and power-density curves of a constructed MEA based DFAFC by using three samples as anode electrocatalysts, respectively. As seen, the constructed DFAFC using UCSÀ PtZn iNPs as anode electrocatalyst delivers a maximum power density of 107 mW cm À 2 , which is 2.1 and 1.4 times higher than that of a similar device using commercial Pt/ C (52 mW cm À 2 ) and PtZn iNPs (79 mW cm À 2 ) as anode electrocatalysts, respectively.…”

Section: Resultsmentioning

confidence: 99%

Role of Ultrathin Carbon Shell in Enhancing the Performance of PtZn Intermetallic Nanoparticles as an Anode Electrocatalyst for Direct Formic Acid Fuel Cells

Zhao

Chen³

et al. 2019

ChemElectroChem

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Introducing a carbon shell to Pt‐based intermetallic nanoparticles (iNPs) is an effective approach to prepare structurally ordered electrocatalysts for fuel cell applications. However, it remains a huge challenge to synthesize small‐sized Pt‐based iNPs with a concisely controlled carbon shell based on fully understanding the role of the carbon shell in the electrocatalytic performance. Herein, we report the preparation of ultrathin carbon shell (UCS)‐coated, small‐sized PtZn iNPs, which are obtained by using the simple heat treatment of polypyrrole‐coated PtZn/C (PPy−PtZn/C), which can produce a carbon shell in situ and simultaneously transfer a disordered PtZn alloy into ordered intermetallic PtZn. Interestingly, the thickness of the carbon shell can be well‐controlled by tuning the polymerization time of pyrrole (Py). The obtained PtZn iNPs (an average diameter of ca. 4 nm) coated with UCS (ca. 0.5 nm thickness) shows the best electrocatalytic performance toward the formic acid oxidation reaction. Moreover, the UCS−PtZn iNPs offers remarkable long‐term stability as an anode electrocatalyst in a constructed direct formic acid fuel cell. The results demonstrate that the UCS formed in situ only acts as a physicochemical protecting shell with high permeability for the reactants, but it does not block the catalytic reaction sites of iNPs.

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“…They also developed a compact passive twin‐cell stack with a common fuel reservoir that exhibited a MPD of 44.5 mW cm −2 with 5 M FA. Compared to the total power density of the individual cells, the higher performance of the stack was attributed to a possible rise in temperature, which decreased internal resistance and improved mass transfer (P. Hong, Liao, et al, 2011).…”

Section: Dfafc Designsmentioning

confidence: 99%

Recent advances in electrocatalysts, mechanism, and cell architecture for direct formic acid fuel cells

Bhaskaran

Abraham²,

Chetty³

2021

WIREs Energy & Environment

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Direct formic acid fuel cells (DFAFCs) are potential candidates as power sources for various applications, especially in portable electronics and medical diagnostic devices. Though they have been the subject of considerable research, commercial prototypes of DFAFCs are rudimentary compared to other liquid fuel cells, particularly the widespread methanol‐based direct methanol fuel cells. Various strategies for rationally engineering the electrocatalysts for enhancing DFAFC performance have been explored in the last few years, such as alloying noble metals with earth‐abundant transition metals, designing specific morphological and structural arrangements, decorating the surface with corrosion‐tolerant cocatalysts, and providing better catalyst support for effective catalyst dispersion. An overall approach may be necessary and should include (i) understanding the underlying mechanism, which will guide the direction of catalyst engineering, (ii) employing morphological, compositional, and structural control of the electrocatalysts to improve catalyst utilization and enhance the intrinsic activity for real‐world applications, and (iii) integrating these in a proficiently designed cell architecture suitable for targeted applications. In this review, we focus on the recent advances in electrocatalysts, formic acid electrooxidation mechanisms, and DFAFC cell architectures, which could help address the opportunities and challenges of commercializing DFAFC as a prospective alternative power source for portable applications. This article is categorized under: Fuel Cells and Hydrogen > Science and Materials Energy Research & Innovation > Science and Materials

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A miniature passive direct formic acid fuel cell based twin-cell stack with highly stable and reproducible long-term discharge performance

Cited by 15 publications

References 36 publications

Effects of Pt/C, Pd/C and PdPt/C anode catalysts on the performance and stability of air breathing direct formic acid fuel cells

Effects of Pt/C, Pd/C and PdPt/C anode catalysts on the performance and stability of air breathing direct formic acid fuel cells

Role of Ultrathin Carbon Shell in Enhancing the Performance of PtZn Intermetallic Nanoparticles as an Anode Electrocatalyst for Direct Formic Acid Fuel Cells

Recent advances in electrocatalysts, mechanism, and cell architecture for direct formic acid fuel cells

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