Novel high ionic conductivity electrolyte membrane based on semiconductor La0.65Sr0.3Ce0.05Cr0.5Fe0.5O3-δ for low-temperature solid oxide fuel cells

Meng, Yuanjing; Wang, Xunying; Zhang, Wei; Chen, Xia; Liu, Ya Nan; Yuan, Menghui; Zhu, Bin; Ji, Yuan

doi:10.1016/j.jpowsour.2019.02.100

Cited by 46 publications

(23 citation statements)

References 40 publications

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“…Table 2. The conductivity of SDC is normally less than 0.1 S cm -1 at low temperature according to the literature and our result [28]. The conductivity of Ti3C2Tx/SDC exhibits the best conductivity which is even orders of magnitude higher than that of reported membranes.…”

Section: Resultssupporting

confidence: 84%

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Xian¹

2019

International Journal of Electrochemical Science

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Low temperature solid oxide fuel cell (SOFC) has received great interest recently. However, the low oxygen ion conductivity of electrolyte restricts the operation temperature reduction for SOFC. In this report, 2D nanomaterial Ti3C2Tx is used as filler doped into the Sm0.2Ce0.8O1.9(SDC) to enhance the conductivity and mechanical strength of composite electrolyte. The 5wt.% Ti3C2Tx/SDC composite membrane exhibits the 3 and 9 times ionic conductivity as that of SDC at 500°C and 600°C, respectively. Furthermore, the peak power density of the single cell enhanced by ∼250% at 500°C. The addition of Ti3C2Tx-MXene also improved the hardness, fracture toughness and thermal stability of composite membranes.

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Section: Resultssupporting

confidence: 84%

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Xian¹

2019

International Journal of Electrochemical Science

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“…Copyright 2019, American Chemical Society. (Hu et al, 2014b;Hu et al, 2015a;Dong et al, 2016;Wu et al, 2016;Xia et al, 2016b;Zhu et al, 2016a;Cai et al, 2017;Xia et al, 2017a;Xia et al, 2017b;Chen et al, 2018;Qiao et al, 2018;Wu et al, 2018a;Dong et al, 2019;Xing et al, 2020) Especially, well-developed SOFC perovskite cathode materials, which are usually p-type semiconductors, can be used as electrolyte functions through Schottky junction principle (Zhu et al, 2013;Zhu et al, 2015;Dong et al, 2016;Zhu et al, 2016b;Zhu et al, 2017;Meng et al, 2018;Meng et al, 2019). These types of SBFCs can avoid compatibility issues between the electrolyte and electrode because the electrolyte itself contains already the electrode with good compatibility.…”

Section: Methodsmentioning

confidence: 99%

Junction and energy band on novel semiconductor-based fuel cells

Jiang

Fan

et al. 2021

iScience

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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.

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“…23 Likewise, a La 0.65 Sr 0.3 Ce 0.05 Cr 0.5 Fe 0.5 O 3−δ semiconductor-ionic composite material with a high electrochemical power output of 837 mW cm −2 and an appreciable ionic conductivity of 0.15 S cm −1 at 550 °C has been achieved. 24,25 Thus, the semiconductor-ionic heterostructure composites have displayed superior ionic conductivity and good electrochemical performance among these three different kinds of semiconductor materials. The interface engineering in the heterostructure has a crucial role in the enhancement and fast transport of ionic conduction due to the presence of a built-in electric field (BIEF).…”

Section: (Ii)mentioning

confidence: 99%

Electrochemical Properties of a Dual-Ion Semiconductor-Ionic Co_0.2Zn_0.8O-Sm_0.20Ce_0.80O_2−δ Composite for a High-Performance Low-Temperature Solid Oxide Fuel Cell

Rauf

Shah

Tayyab

et al. 2021

ACS Appl. Energy Mater.

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Semiconductor heterostructures offer a high ionic conduction path enhanced by built-in electric field at the interface, which helps to avoid electronic conduction in low-temperature solid oxide fuel cells (LT-SOFCs). In this study, we synthesized a semiconductor heterostructure based on Co-doped ZnO and Sm 0.2 Ce 0.8 O 2−δ (SDC) for LT-SOFC application. First, we optimized the composition of the Co-doped ZnO by varying the doping concentration. The cell with Co 0.2 Zn 0.8 O composition (σ i = 0.158 S cm −1 ) yielded the best performance of 664 mW cm −2 at 550 °C. This optimized composition of Co-doped ZnO was mixed with a well-known ionic conductor Sm 0.2 Ce 0.8 O 2−δ (SDC) to further improve the ionic conductivity and performance of the cell. The heterostructure formed between these two semiconductor materials improved the ionic conductivity of this composite material to 0.24 S cm −1 at 550 °C, which is 2 orders higher in magnitude than that of bulk SDC. The fuel cells fabricated with this promising semiconductor-ionic heterostructure material produced an outstanding power density of 928 mW cm −2 at 550 °C. Our further investigation shows protonic conduction (H + ) in the Co 0.2 Zn 0.8 O-SDC composite, which exhibited protonic conduction 0.088 S cm −1 with a power density of 388 mW cm −2 at 550 °C. A detailed characterization of the material and the fuel cells is performed with the help of different electrochemical (electrochemical impedance spectroscopy (EIS)), spectroscopic (X-ray diffraction (XRD), UV−vis spectroscopy, X-ray photoelectron spectroscopy (XPS)), and microscopic techniques (scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), energy-dispersive X-ray spectrometry (EDX)). The stability of the cell was tested for 35 h to ensure stable operation of these devices. This semiconductor-ionic heterostructure composite provides insight into the development of electrolyte membranes for advanced SOFCs.

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Novel high ionic conductivity electrolyte membrane based on semiconductor La0.65Sr0.3Ce0.05Cr0.5Fe0.5O3-δ for low-temperature solid oxide fuel cells

Cited by 46 publications

References 40 publications

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Junction and energy band on novel semiconductor-based fuel cells

Electrochemical Properties of a Dual-Ion Semiconductor-Ionic Co_0.2Zn_0.8O-Sm_0.20Ce_0.80O_2−δ Composite for a High-Performance Low-Temperature Solid Oxide Fuel Cell

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Novel high ionic conductivity electrolyte membrane based on semiconductor La0.65Sr0.3Ce0.05Cr0.5Fe0.5O3-δ for low-temperature solid oxide fuel cells

Cited by 46 publications

References 40 publications

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Effect of MXene on Oxygen Ion Conductivity of Sm0.2Ce0.8O1.9 as Electrolyte for Low Temperature SOFC

Junction and energy band on novel semiconductor-based fuel cells

Electrochemical Properties of a Dual-Ion Semiconductor-Ionic Co0.2Zn0.8O-Sm0.20Ce0.80O2−δ Composite for a High-Performance Low-Temperature Solid Oxide Fuel Cell

Contact Info

Product

Resources

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Electrochemical Properties of a Dual-Ion Semiconductor-Ionic Co_0.2Zn_0.8O-Sm_0.20Ce_0.80O_2−δ Composite for a High-Performance Low-Temperature Solid Oxide Fuel Cell