Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi0.8Co0.15Al0.05O2-Sm0.2Ce0.8O2-δHeterostructure for Fast Ionic Transport

Zuhra Tayyab; Sajid Rauf; Chen Xia; Baoyuan Wang; M. A.K.Yousaf Shah; Naveed Mushtaq; Shi Heng Liang; Changping Yang; Peter D. Lund; Muhammad Imran Asghar

doi:10.1021/acsaem.1c01186

Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂-Sm_0.2Ce_0.8O_2-δHeterostructure for Fast Ionic Transport

Zuhra Tayyab, Sajid Rauf, Chen Xia, Baoyuan Wang, M. A.K.Yousaf Shah, Naveed Mushtaq, Shi Heng Liang^*, Changping Yang, Peter D. Lund, Muhammad Imran Asghar

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Abstrakti

Formation of a heterostructure of semiconductor materials is a promising method to develop an electrolyte with high ionic conductivity at low operational temperature of solid oxide fuel cells (LT-SOFCs). Herein, we develop various heterostructure composites by introducing a pure ionic conductor Sm0.2Ce0.8O2-δ (SDC) into a semiconductor LiNi0.8Co0.15Al0.05O2 (LNCA) for LT-SOFCs electrolyte. The morphology, crystal structure, elemental distribution, micro-structure, and oxidation states of the composite of LNCA-SDC are analyzed and studied via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), high energy dispersive spectrometry, and X-ray photoelectron spectroscopy (XPS). Electrochemical studies found that the optimal weight ratio of 0.5 LNCA-1.5 SDC heterostructure composite exhibits relatively high ionic conductivity (0.12 S cm-1 at 520 °C), which is much higher than that of SDC. The designed composite of LNCA-SDC heterostructures with optimal weight ratio (0.5:1.5) delivers a remarkable fuel cell power output of 0.735 W cm-2 at 520 °C. The formation of the heterostructure and reconstruction of energy bands at the interface play the crucial roles in enhancing ionic conduction to improve electrochemical performance. The prepared composite heterostructure delivers a unique and insightful strategy of electrolyte in advanced LT-SOFCs.

Alkuperäiskieli	Englanti
Sivut	8922-8932
Sivumäärä	11
Julkaisu	ACS Applied Energy Materials
Vuosikerta	4
Numero	9
Varhainen verkossa julkaisun päivämäärä	2021
DOI - pysyväislinkit	https://doi.org/10.1021/acsaem.1c01186
Tila	Julkaistu - 27 syysk. 2021
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.1021/acsaem.1c01186

acsaem.1c01186Final published version, 7,29 MBLisenssi: CC BY

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Seuraavan sukupolven johtavat polttokennot
Asghar, I. (Vastuullinen tutkija)
01/09/2019 → 31/08/2022
Projekti: Academy of Finland: Other research funding

Siteeraa tätä

Tayyab, Z., Rauf, S., Xia, C., Wang, B., Shah, M. A. K. Y., Mushtaq, N., Liang, S. H., Yang, C., Lund, P. D., & Asghar, M. I. (2021). Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂-Sm_0.2Ce_0.8O_2-δHeterostructure for Fast Ionic Transport. ACS Applied Energy Materials, 4(9), 8922-8932. https://doi.org/10.1021/acsaem.1c01186

@article{b03b15e1a67e4902bf4ed257c16cc00e,

title = "Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi0.8Co0.15Al0.05O2-Sm0.2Ce0.8O2-δHeterostructure for Fast Ionic Transport",

abstract = "Formation of a heterostructure of semiconductor materials is a promising method to develop an electrolyte with high ionic conductivity at low operational temperature of solid oxide fuel cells (LT-SOFCs). Herein, we develop various heterostructure composites by introducing a pure ionic conductor Sm0.2Ce0.8O2-δ (SDC) into a semiconductor LiNi0.8Co0.15Al0.05O2 (LNCA) for LT-SOFCs electrolyte. The morphology, crystal structure, elemental distribution, micro-structure, and oxidation states of the composite of LNCA-SDC are analyzed and studied via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), high energy dispersive spectrometry, and X-ray photoelectron spectroscopy (XPS). Electrochemical studies found that the optimal weight ratio of 0.5 LNCA-1.5 SDC heterostructure composite exhibits relatively high ionic conductivity (0.12 S cm-1 at 520 °C), which is much higher than that of SDC. The designed composite of LNCA-SDC heterostructures with optimal weight ratio (0.5:1.5) delivers a remarkable fuel cell power output of 0.735 W cm-2 at 520 °C. The formation of the heterostructure and reconstruction of energy bands at the interface play the crucial roles in enhancing ionic conduction to improve electrochemical performance. The prepared composite heterostructure delivers a unique and insightful strategy of electrolyte in advanced LT-SOFCs. ",

keywords = "band bending, ionic conductivity, junction, low temperature, semiconductor electrolyte, semiconductor-ionic composite",

author = "Zuhra Tayyab and Sajid Rauf and Chen Xia and Baoyuan Wang and Shah, {M. A.K.Yousaf} and Naveed Mushtaq and Liang, {Shi Heng} and Changping Yang and Lund, {Peter D.} and Asghar, {Muhammad Imran}",

note = "Funding Information: This study was supported by National Natural Science Foundation of China (NSFC) under grant no. 11674086, 11904088, and 2019CFB183. Scientific Research Project of Education Department of Hubei Province (no. Q20191010) and Research Project of Wuhan Science and Technology Bureau (no. 2019010701011394). Dr. Asghar thanks the Hubei Talent 100 program and Academy of Finland (Grant nos. 13329016, 13322738) for their support. Publisher Copyright: {\textcopyright} 2021 The Authors. Published by American Chemical Society.",

year = "2021",

month = sep,

day = "27",

doi = "10.1021/acsaem.1c01186",

language = "English",

volume = "4",

pages = "8922--8932",

journal = "ACS Applied Energy Materials",

issn = "2574-0962",

publisher = "American Chemical Society",

number = "9",

}

Tayyab, Z, Rauf, S, Xia, C, Wang, B, Shah, MAKY, Mushtaq, N, Liang, SH, Yang, C, Lund, PD & Asghar, MI 2021, 'Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi_0.8Co_0.15Al_0.05O₂-Sm_0.2Ce_0.8O_2-δHeterostructure for Fast Ionic Transport', ACS Applied Energy Materials, Vuosikerta 4, Nro 9, Sivut 8922-8932. https://doi.org/10.1021/acsaem.1c01186

TY - JOUR

T1 - Advanced LT-SOFC Based on Reconstruction of the Energy Band Structure of the LiNi0.8Co0.15Al0.05O2-Sm0.2Ce0.8O2-δHeterostructure for Fast Ionic Transport

AU - Tayyab, Zuhra

AU - Rauf, Sajid

AU - Xia, Chen

AU - Wang, Baoyuan

AU - Shah, M. A.K.Yousaf

AU - Mushtaq, Naveed

AU - Liang, Shi Heng

AU - Yang, Changping

AU - Lund, Peter D.

AU - Asghar, Muhammad Imran

N1 - Funding Information: This study was supported by National Natural Science Foundation of China (NSFC) under grant no. 11674086, 11904088, and 2019CFB183. Scientific Research Project of Education Department of Hubei Province (no. Q20191010) and Research Project of Wuhan Science and Technology Bureau (no. 2019010701011394). Dr. Asghar thanks the Hubei Talent 100 program and Academy of Finland (Grant nos. 13329016, 13322738) for their support. Publisher Copyright: © 2021 The Authors. Published by American Chemical Society.

PY - 2021/9/27

Y1 - 2021/9/27

N2 - Formation of a heterostructure of semiconductor materials is a promising method to develop an electrolyte with high ionic conductivity at low operational temperature of solid oxide fuel cells (LT-SOFCs). Herein, we develop various heterostructure composites by introducing a pure ionic conductor Sm0.2Ce0.8O2-δ (SDC) into a semiconductor LiNi0.8Co0.15Al0.05O2 (LNCA) for LT-SOFCs electrolyte. The morphology, crystal structure, elemental distribution, micro-structure, and oxidation states of the composite of LNCA-SDC are analyzed and studied via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), high energy dispersive spectrometry, and X-ray photoelectron spectroscopy (XPS). Electrochemical studies found that the optimal weight ratio of 0.5 LNCA-1.5 SDC heterostructure composite exhibits relatively high ionic conductivity (0.12 S cm-1 at 520 °C), which is much higher than that of SDC. The designed composite of LNCA-SDC heterostructures with optimal weight ratio (0.5:1.5) delivers a remarkable fuel cell power output of 0.735 W cm-2 at 520 °C. The formation of the heterostructure and reconstruction of energy bands at the interface play the crucial roles in enhancing ionic conduction to improve electrochemical performance. The prepared composite heterostructure delivers a unique and insightful strategy of electrolyte in advanced LT-SOFCs.

AB - Formation of a heterostructure of semiconductor materials is a promising method to develop an electrolyte with high ionic conductivity at low operational temperature of solid oxide fuel cells (LT-SOFCs). Herein, we develop various heterostructure composites by introducing a pure ionic conductor Sm0.2Ce0.8O2-δ (SDC) into a semiconductor LiNi0.8Co0.15Al0.05O2 (LNCA) for LT-SOFCs electrolyte. The morphology, crystal structure, elemental distribution, micro-structure, and oxidation states of the composite of LNCA-SDC are analyzed and studied via X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), high resolution-transmission electron microscopy (HR-TEM), high energy dispersive spectrometry, and X-ray photoelectron spectroscopy (XPS). Electrochemical studies found that the optimal weight ratio of 0.5 LNCA-1.5 SDC heterostructure composite exhibits relatively high ionic conductivity (0.12 S cm-1 at 520 °C), which is much higher than that of SDC. The designed composite of LNCA-SDC heterostructures with optimal weight ratio (0.5:1.5) delivers a remarkable fuel cell power output of 0.735 W cm-2 at 520 °C. The formation of the heterostructure and reconstruction of energy bands at the interface play the crucial roles in enhancing ionic conduction to improve electrochemical performance. The prepared composite heterostructure delivers a unique and insightful strategy of electrolyte in advanced LT-SOFCs.

KW - band bending

KW - ionic conductivity

KW - junction

KW - low temperature

KW - semiconductor electrolyte

KW - semiconductor-ionic composite

UR - http://www.scopus.com/inward/record.url?scp=85115209073&partnerID=8YFLogxK

U2 - 10.1021/acsaem.1c01186

DO - 10.1021/acsaem.1c01186

M3 - Article

AN - SCOPUS:85115209073

SN - 2574-0962

VL - 4

SP - 8922

EP - 8932

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 9

ER -