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Fast ionic conducti...
Fast ionic conduction in semiconductor CeO2-delta electrolyte fuel cells
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- Wang, Baoyuan (författare)
- Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.
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- Zhu, Bin (författare)
- Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.;China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeo Mat, Minist Educ, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China.
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- Yun, Sining (författare)
- Xian Univ Architecture & Technol, Sch Mat & Mineral Resources, Funct Mat Lab, Xian 710055, Shaanxi, Peoples R China.
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- Zhang, Wei (författare)
- Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.
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- Xia, Chen (författare)
- Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.
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- Afzal, Muhammad (författare)
- KTH,Energiteknik
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- Cai, Yixiao (författare)
- Donghua Univ, State Key Lab Modificat Chem Fibers & Polymer Mat, Text Pollut Controlling Engn Ctr, Minist Environm Protect,Coll Environm Sci & Engn, 2999 Renmin North Rd, Shanghai 201620, Peoples R China.
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- Liu, Yanyan (författare)
- KTH,Energiteknik
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- Wang, Yi (författare)
- Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany.
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- Wang, Hao (författare)
- Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.
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Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Hubei, Peoples R China.;China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeo Mat, Minist Educ, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China. (creator_code:org_t)
- 2019-09-13
- 2019
- Engelska.
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Ingår i: NPG ASIA MATERIALS. - : Nature Publishing Group. - 1884-4049 .- 1884-4057. ; 11:1
- Relaterad länk:
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Producing electrolytes with high ionic conductivity has been a critical challenge in the progressive development of solid oxide fuel cells (SOFCs) for practical applications. The conventional methodology uses the ion doping method to develop electrolyte materials, e.g., samarium-doped ceria (SDC) and yttrium-stabilized zirconia (YSZ), but challenges remain. In the present work, we introduce a logical design of non-stoichiometric CeO2-delta based on non-doped ceria with a focus on the surface properties of the particles. The CeO2-delta reached an ionic conductivity of 0.1 S/cm and was used as the electrolyte in a fuel cell, resulting in a remarkable power output of 660 mW/cm(2) at 550 degrees C. Scanning transmission electron microscopy (STEM) combined with electron energy-loss spectroscopy (EELS) clearly clarified that a surface buried layer on the order of a few nanometers was composed of Ce3+ on ceria particles to form a CeO2-delta@CeO2 core-shell heterostructure. The oxygen deficient layer on the surface provided ionic transport pathways. Simultaneously, band energy alignment is proposed to address the short circuiting issue. This work provides a simple and feasible methodology beyond common structural (bulk) doping to produce sufficient ionic conductivity. This work also demonstrates a new approach to progress from material fundamentals to an advanced low-temperature SOFC technology.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
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- Av författaren/redakt...
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Wang, Baoyuan
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Zhu, Bin
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Yun, Sining
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Zhang, Wei
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Xia, Chen
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Afzal, Muhammad
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visa fler...
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Cai, Yixiao
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Liu, Yanyan
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Wang, Yi
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Wang, Hao
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