Low-temperature, high-performance thin-film solid oxide fuel cells with tailored nano-column structures of a sputtered Ni anode

A nanostructured electrode for use in low-temperature solid oxide fuel cells has drawn attention due to its high activity. Among various nanostructure fabrication processes, sputtering has shown superior characteristics for nanostructured electrode fabrication and does not require high temperatures....

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2020-11, Vol.8 (41), p.21668-21679
Main Authors: Yu, Wonjong, Lim, Yonghyun, Lee, Sanghoon, Pandiyan, Arunkumar, Cho, Gu Young, Cha, Suk Won
Format: Article
Language:English
Subjects:
Aluminum
Aluminum oxide
Anodes
Columnar structure
Electrodes
Fabrication
Fuel cells
Fuel technology
High temperature
Low temperature
Nanostructure
Solid oxide fuel cells
Sputtering
Substrates
Thin films
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cited_by cdi_FETCH-LOGICAL-c318t-9af40bb358b06189aa307d2e1c7225c57e9909f5135cabeaaa2b333e88acbe023
cites cdi_FETCH-LOGICAL-c318t-9af40bb358b06189aa307d2e1c7225c57e9909f5135cabeaaa2b333e88acbe023
container_end_page 21679
container_issue 41
container_start_page 21668
container_title Journal of materials chemistry. A, Materials for energy and sustainability
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creator Yu, Wonjong
Lim, Yonghyun
Lee, Sanghoon
Pandiyan, Arunkumar
Cho, Gu Young
Cha, Suk Won
description A nanostructured electrode for use in low-temperature solid oxide fuel cells has drawn attention due to its high activity. Among various nanostructure fabrication processes, sputtering has shown superior characteristics for nanostructured electrode fabrication and does not require high temperatures. However, the limited performance of sputtered Ni-based anodes and the current lack of a fundamental understanding of nanostructural control remain significant issues. Here, the fabrication process for a high-performance nanostructured Ni anode that works by tailoring a nano-column structure is presented. Controlling the sputtering deposition angle and rotation speed of the substrate significantly improves the in-plane connectivity of the nanostructured Ni anode, resulting in a 50% enhancement in the peak power density of the cell. The maximum performance of the cell with the tailored anode nanostructure was 304 and 477 mW cm −2 at 450 and 500 °C, respectively, which represents the best recorded performance of an anodic aluminum oxide (AAO)-supported Ni-based thin-film SOFC. Further investigation via 1-dimensional simulation showed that the enhancement in the in-plane continuity of the columnar anode structure dominantly affects the performance of TF-SOFCs, which means that the novel process is promising for practical applications of nano-energy devices fabricated by sputtering. By tailoring the nano-column structures of a sputtered Ni anode, the in-plane connectivity of the nanostructured Ni anode is significantly improved.
doi_str_mv 10.1039/d0ta06255c
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source Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)
subjects Aluminum
Aluminum oxide
Anodes
Columnar structure
Electrodes
Fabrication
Fuel cells
Fuel technology
High temperature
Low temperature
Nanostructure
Solid oxide fuel cells
Sputtering
Substrates
Thin films
title Low-temperature, high-performance thin-film solid oxide fuel cells with tailored nano-column structures of a sputtered Ni anode
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