Effect of doping strategy on electrochemical performance of grain boundaries of complex perovskite proton conductor Ba3Ca1.18Nb 1.82O_δ
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作者:
Cai, Xinyu
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Cai, Xinyu
[1
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Li, Ying
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Li, Ying
[1
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Yang, Lixin
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Yang, Lixin
[1
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Wang, Xi
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Wang, Xi
[1
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[1] Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
In this study, the electrical conductivity and electrochemical performance of Ba 3 Ca 1.18 Nb 1.82 O 9_s were improved by substituting niobium (Nb) element with bismuth (Bi) and ytterbium (Yb) elements. Three different proton conductors, namely, Ba 3 Ca 1.18 Nb 1.82 O 9_s (BCN), Ba 3 Ca 1.18 Nb 1.72 Bi 0.1 O 9_s (BCNB), and Ba 3 Ca 1.18 Nb 1.72 Yb 0.1 O 9_s (BCNYb) were prepared by solid state sintering. The electrochemical performance of BCNYb was found to be the best at 400-800 degrees C in the wet atmosphere. Their ion transport properties were studied by using the defect equilibrium model. The results show the improvement in proton conductivity of BCNYb. Analysis of distribution of relaxation time reveals the improvement in the grain boundary properties of BCNYb. Single cells were prepared with BCN, BCNB, and BCNYb electrolytes, and the performance of the resulting fuel cells was tested. The BCNYb-based fuel cell shows excellent electrochemical performance, indicating its promising potential as a solid-state electrolyte with excellent properties.
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King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKing Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
Bi, Lei
Traversa, Enrico
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King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi ArabiaKing Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Solar & Photovolta Engn Res Ctr, Thuwal 239556900, Saudi Arabia
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Chonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South KoreaChonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South Korea
Lim, Dae-Kwang
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Singh, Bhupendra
Jeon, Sang-Yun
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Chonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South KoreaChonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South Korea
Jeon, Sang-Yun
Song, Sun-Ju
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Chonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South Korea
Chonnam Natl Univ, Res Inst Catalysis, Kwangju 500757, South KoreaChonnam Natl Univ, Sch Mat Sci & Engn, Ion Lab, Kwangju 500757, South Korea
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Cai, Xinyu
Li, Ying
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China
Li, Ying
Yang, Lixin
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Northeastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R ChinaNortheastern Univ, Sch Met, Liaoning Key Lab Met Sensor Mat & Technol, Shenyang 110819, Peoples R China