Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production

Ding, Hanping; Wu, Weiming; Jiang, Chao; Ding, Y.; Bian, Wenjuan; Hu, Boxun; Singh, Prabhakar; Orme, Christopher J.; Wang, Lu‐Cun; Zhang, Yunya; Ding, Dong

doi:10.1038/s41467-020-15677-z

Cited by 299 publications

(229 citation statements)

References 63 publications

Supporting

Mentioning

210

Contrasting

Order By: Relevance

“…However, the negligible R 3 increases from 0.009 to 0.016 Ω cm 2 . At 700°C, the first two peaks (R 1 and R 2 ) are also largely reduced from 1.156 to 0.520 Ω cm 2 for R 1 and from 6.221 to 3.303 Ω cm 2 for R 2 . For the additional R 2 , the value is slightly reduced from 0.995 to 0.816 Ω cm 2 .…”

Section: Resultsmentioning

confidence: 95%

“…However, the nature of intermittency and variability makes only a small percentage of these energy systems available. To achieve a sustainable system, it is critical to develop energy conversion and storage technologies for clipping peak (shifting electricity from peak periods to off-peak periods), e.g., mountain water reservoirs, batteries, and reversible solid oxide cell (RSOC) systems [1,2]. Among all, RSOC has proven to be a highly effective technology for this purpose [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient reversible CO/CO2 conversion in solid oxide cells with a phase-transformed fuel electrode

Singh

Zhuang

et al. 2020

Sci. China Mater.

View full text Add to dashboard Cite

The reversible solid oxide cell (RSOC) is an attractive technology to mutually convert power and chemicals at elevated temperatures. However, its development has been hindered mainly due to the absence of a highly active and durable fuel electrode. Here, we report a phase-transformed CoFe-Sr 3 Fe 1.25 Mo 0.75 O 7−δ (CoFe-SFM) fuel electrode consisting of CoFe nanoparticles and Ruddlesden-Popper-layered Sr 3 Fe 1.25 Mo 0.75 O 7−δ (SFM) from a Sr 2 Fe 7/6 Mo 0.5 Co 1/3 O 6−δ (SFMCo) perovskite oxide after annealing in hydrogen and apply it to reversible CO/CO 2 conversion in RSOC. The CoFe-SFM fuel electrode shows improved catalytic activity by accelerating oxygen diffusion and surface kinetics towards the CO/CO 2 conversion as demonstrated by the distribution of relaxation time (DRT) study and equivalent circuit model fitting analysis. Furthermore, an electrolyte-supported single cell is evaluated in the 2:1 CO-CO 2 atmosphere at 800°C, which shows a peak power density of 259 mW cm −2 for CO oxidation and a current density of −0.453 A cm −2 at 1.3 V for CO 2 reduction, which correspond to 3.079 and 3.155 mL min −1 cm −2 for the CO and CO 2 conversion rates, respectively. More importantly, the reversible conversion is successfully demonstrated over 20 cyclic electrolysis and fuel cell switching test modes at 1.3 and 0.6 V. This work provides a useful guideline for designing a fuel electrode through a surface/interface exsolution process for RSOC towards efficient CO-CO 2 reversible conversion.

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Efficient reversible CO/CO2 conversion in solid oxide cells with a phase-transformed fuel electrode

Singh

Zhuang

et al. 2020

Sci. China Mater.

View full text Add to dashboard Cite

show abstract

“…Recently, a simple cobaltite perovskite PrNi0.5Co0.5O3−δ (PNC) associated with tripleconducting properties was processed with a nanofibre microstructure, leading to a very low polarisation resistance of 0.055 Ω•cm 2 at 500 °C and an excellent MPD of 0.611 W•cm −2 at 600 °C when operating on BCZYYb4411 electrolyte [114] (Figure 5). Another simple cobaltite perovskite developed in 2014, around the period that the first double perovskites were reported, is BaCo0.4Fe0.4Zr0.1Y0.1O3−δ (BCFZY).…”

Section: Triple Proton Oxide Ion Electron Hole-conducting Oxidesmentioning

confidence: 99%

Perspectives on Cathodes for Protonic Ceramic Fuel Cells

et al. 2021

View full text Add to dashboard Cite

Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility, unnecessity of expensive noble metals for the electrocatalyst, and no dilution of the fuel electrode due to water formation. Nevertheless, the lower operating temperature, in comparison to classic solid oxide fuel cells, places significant demands on the cathode as the reaction kinetics are slower than those related to fuel oxidation in the anode or ion migration in the electrolyte. Cathode design and composition are therefore of crucial importance for the cell performance at low temperature. The different approaches that have been adopted for cathode materials research can be broadly classified into the categories of protonic–electronic conductors, oxide-ionic–electronic conductors, triple-conducting oxides, and composite electrodes composed of oxides from two of the other categories. Here, we review the relatively short history of PCFC cathode research, discussing trends, highlights, and recent progress. Current understanding of reaction mechanisms is also discussed.

show abstract

“…Many efforts have been dedicated to reducing the operating temperature of SOFCs by developing alternative materials and technologies (Shao and Haile, 2004;Huang et al, 2006;Wang et al, 2008;Ma et al, 2010;Fan et al, 2013;Fan et al, 2014;Boldrin and Brandon, 2019;Joo et al, 2019;Ding et al, 2020;Fop et al, 2020). Up to date, the state-of-the-art SOFC material system is Ni-based cermet anode, YSZ electrolyte, and (La, Sr)MnO 3 cathode catalyst.…”

Section: Introductionmentioning

confidence: 99%

Junction and energy band on novel semiconductor-based fuel cells

Jiang

Fan

et al. 2021

iScience

View full text Add to dashboard Cite

Fuel cells are highly efficient and green power sources. The typical membrane electrode assembly is necessary for common electrochemical devices. Recent research and development in solid oxide fuel cells have opened up many new opportunities based on the semiconductor or its heterostructure materials. Semiconductor-based fuel cells (SBFCs) realize the fuel cell functionality in a much more straightforward way. This work aims to discuss new strategies and scientific principles of SBFCs by reviewing various novel junction types/interfaces, i.e., bulk and planar p-n junction, Schottky junction, and n-i type interface contact. New designing methodologies of SBFCs from energy band/alignment and built-in electric field (BIEF), which block the internal electronic transport while assisting interfacial superionic transport and subsequently enhance device performance, are comprehensively reviewed. This work highlights the recent advances of SBFCs and provides new methodology and understanding with significant importance for both fundamental and applied R&D on new-generation fuel cell materials and technologies.

show abstract

Self-sustainable protonic ceramic electrochemical cells using a triple conducting electrode for hydrogen and power production

Cited by 299 publications

References 63 publications

Efficient reversible CO/CO2 conversion in solid oxide cells with a phase-transformed fuel electrode

Efficient reversible CO/CO2 conversion in solid oxide cells with a phase-transformed fuel electrode

Perspectives on Cathodes for Protonic Ceramic Fuel Cells

Junction and energy band on novel semiconductor-based fuel cells

Contact Info

Product

Resources

About