Improving catalyst stability in nano-structured solar and fuel cells

Asghar, Muhammad Imran; Lund, Peter

doi:10.1016/j.cattod.2015.05.010

Cited by 17 publications

(12 citation statements)

References 162 publications

(187 reference statements)

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“…Most investigations of cell components related to stability are concentrated on the dye and the electrolyte in DSSCs, mainly evaluating the photovoltaic performance of DSSCs through the light-soaking test at different temperatures (room temperature, 40, 60, and 80 1C) for 100 h or 1000 h. [60][61][62][63][64][65][66][67] For CE stability, more research studies have been associated with Pt CEs. [68][69][70][71][72] Among different methods used for preparing Pt CEs (such as chemical deposition, electrochemical deposition, thermal decomposition, and sputtering), only thermally platinized CEs have been reported to be stable at 80 1C. The other methods have not yet reported whether the Pt electrode is highly stable at 80 1C on any substrate.…”

Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

“…The other methods have not yet reported whether the Pt electrode is highly stable at 80 1C on any substrate. [70][71][72] Similarly, the Pt-free or the Pt-loaded hybrid CEs have not been reported to be stable at 80 1C. 68,70,[73][74][75][76][77] For the Pt-free CE concerned, only a few stability assessments in DSSCs have been conducted.…”

Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

“…[70][71][72] Similarly, the Pt-free or the Pt-loaded hybrid CEs have not been reported to be stable at 80 1C. 68,70,[73][74][75][76][77] For the Pt-free CE concerned, only a few stability assessments in DSSCs have been conducted. The electrochemical and long-term stabilities of CoS, FeS 2 , TiS 2 / PEDOT:PPS, multiwall CNTs (MWCNT), and reduced graphene oxide (RGO) CEs were evaluated by the light-soaking test at 60 1C and room temperature.…”

Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

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Stability assessment of alternative platinum free counter electrodes for dye-sensitized solar cells

Yun

Lund

Hinsch

2015

Energy Environ. Sci.

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234

110

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Platinum (Pt)-free counter electrodes (CEs) are economical alternative components of dye-sensitized solar cells (DSSCs) that have attracted much interest and become the focus of research, with an increasingly large number of scientific papers published in the last two decades. The development of these CE materials was driven mainly by desires to overcome the disadvantages of Pt, as follows: high cost, scarcity, corrosion by the I3\u7f/I\u7f redox couple electrolyte, and mismatch or non-effectivity in the I-free redox couple electrolyte. Although much more is now known about the principal physicochemical processes that occur during CE operation of the DSSC, the stability issues associated with CEs have not been matched by the exponential increase in CE research effort. This raises questions regarding the stability of the CEs whether the present research is sufficiently addressing the stability issues that limit DSSC performance. This review attempts to identify some of the key techniques that evaluate CE stability in DSSCs through a selective presentation of recent research highlights. Classical approaches could effectively assess the probability of using alternative Pt-free CE materials for commercial application, which offer strategies to overcome the current stability stalemate

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Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

Section: Current Status Of Ce Stability In Dsscsmentioning

confidence: 99%

See 1 more Smart Citation

Stability assessment of alternative platinum free counter electrodes for dye-sensitized solar cells

Yun

Lund

Hinsch

2015

Energy Environ. Sci.

Self Cite

234

110

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show abstract

“…To address this problem, many advanced Pt‐based ORR catalysts have been developed . Among these potential ORR catalysts, shape‐controlled Pt‐based nanoparticles (NPs) have been intensively studied in the past several years because of their extremely high ORR mass activity.…”

Section: Introductionmentioning

confidence: 99%

Stability of High‐Performance Pt‐Based Catalysts for Oxygen Reduction Reactions

et al. 2018

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Due to their environmental sustainability and high efficiency, proton-exchange-membrane fuel cells (PEMFCs) are expected to be an essential type of energy source for electric vehicles, energy generation, and the space industry in the coming decades. Here, the recent developments regarding shape-controlled nanostructure catalysts are reviewed, with a focus on the stability of high-performance Pt-based catalysts and related mechanisms. The catalysts, which possess great activity, are still far from meeting the requirements of their applications, due to stability issues, especially in membrane electrode assemblies (MEAs). Thus, solutions toward the comprehensive performance of Pt-based catalysts are discussed here. The research trends and related theories that can promote the application of Pt-based catalysts are also provided.

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“…The motivation for this fuel cell technology originates from the fact that a solid oxide fuel cell (SOFC), a high efficiency fuel cell, operates at high temperatures between 800 o C and 1000 o C primarily due to a limited oxygen ion conductivity of yttria-stabilized zirconia (YSZ) which is used as an electrolyte material [2,3,4]. Such a high operating temperature leads to many degradation issues including chemical and mechanical incompatibilities, permanent microstructural changes and sealing issues [5][6][7]. To overcome this problem, alternative electrolyte materials such as gadolinium doped cerium oxide (GDC) and samarium doped cerium oxide (SDC) have been investigated to be used at lower temperatures (400 o C -600 o C) to replace the YSZ based electrolyte [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of ceramic-carbonate nanocomposite fuel cells using composite GDC/NLC electrolyte with different perovskite structured cathode materials

Asghar

Lepikko

Patakangas

et al. 2017

Front. Chem. Sci. Eng.

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A comparative analysis of perovskite structured cathode materials, La0.65Sr0.35MnO3 (LSM), La0.8Sr0.2CoO3 (LSC), La0.6Sr0.4FeO3 (LSF) and La0.6Sr0.4Co0.2Fe0.8O3 (LSCF), was performed for a ceramic-carbonate nanocomposite fuel cell using composite electrolyte consisting of Gd0.1Ce0.9O1.95 (GDC) and a eutectic mixture of Na2CO3 (NC) and Li2CO3 (LC). The compatibility of these nanocomposite electrode powder materials was investigated under air, CO2 and air/CO2 atmospheres at 550 o C. Microscopy measurements together with energy dispersive X-ray spectroscopy (EDS) elementary analysis revealed few spots with higher counts of manganese relative to lanthanum and strontium under pure CO2 atmosphere. Furthermore, electrochemical impedance (EIS) analysis showed that LSC had the lowest resistance to oxygen reduction reaction (ORR) (14.12 Ω cm 2) followed by LSF (15.23 Ω cm 2), LSCF (19.38 Ω cm 2) and LSM (>300 Ω cm 2). In addition, low frequency EIS measurements (down to 50 µHz) revealed two additional semicircles at frequencies below around 1 Hz. These semicircles can yield additional information about electrochemical reactions in the device. Finally, a fuel cell was fabricated using GDC/NLC nanocomposite electrolyte and its composite with NiO and LSCF as anode and cathode, respectively. The cell produced an excellent power density of 1.06 W/cm 2 at 550 o C under fuel cell conditions.

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Improving catalyst stability in nano-structured solar and fuel cells

Cited by 17 publications

References 162 publications

Stability assessment of alternative platinum free counter electrodes for dye-sensitized solar cells

Stability assessment of alternative platinum free counter electrodes for dye-sensitized solar cells

Stability of High‐Performance Pt‐Based Catalysts for Oxygen Reduction Reactions

Comparative analysis of ceramic-carbonate nanocomposite fuel cells using composite GDC/NLC electrolyte with different perovskite structured cathode materials

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