Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction

An intriguing cell concept by applying proton-conducting oxide as the ionic conducting phase in the anode and taking advantage of beneficial interfacial reaction between anode and electrolyte is proposed to successfully achieve both high open circuit voltage (OCV) and power output for SOFCs with thi...

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Main Authors: Su, C., Shao, Zongping, Lin, Y., Wu, Y., Wang, H.
Format: Journal Article
Published: 2012
Online Access:http://hdl.handle.net/20.500.11937/45985
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author Su, C.
Shao, Zongping
Lin, Y.
Wu, Y.
Wang, H.
author_facet Su, C.
Shao, Zongping
Lin, Y.
Wu, Y.
Wang, H.
author_sort Su, C.
building Curtin Institutional Repository
collection Online Access
description An intriguing cell concept by applying proton-conducting oxide as the ionic conducting phase in the anode and taking advantage of beneficial interfacial reaction between anode and electrolyte is proposed to successfully achieve both high open circuit voltage (OCV) and power output for SOFCs with thin-film samarium doped ceria (SDC) electrolyte at temperatures higher than 600 °C. The fuel cells were fabricated by conventional route without introducing an additional processing step. A very thin and dense interfacial layer (2-3 µm) with compositional gradient was created by in situ reaction between anode and electrolyte although the anode substrate had high surface roughness (>5 µm), which is, however, beneficial for increasing triple phase boundaries where electrode reactions happen. A fuel cell with Ni-BaZr 0.4Ce 0.4Y 0.2O 3 anode, thin-film SDC electrolyte and Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3-d (BSCF) cathode has an OCV as high as 1.022 V and delivered a power density of 462 mW cm -2 at 0.7 V at 600 °C. It greatly promises an intriguing fuel cell concept for efficient power generation. © This journal is the Owner Societies 2012.
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spelling curtin-20.500.11937-459852018-03-29T09:07:46Z Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction Su, C. Shao, Zongping Lin, Y. Wu, Y. Wang, H. An intriguing cell concept by applying proton-conducting oxide as the ionic conducting phase in the anode and taking advantage of beneficial interfacial reaction between anode and electrolyte is proposed to successfully achieve both high open circuit voltage (OCV) and power output for SOFCs with thin-film samarium doped ceria (SDC) electrolyte at temperatures higher than 600 °C. The fuel cells were fabricated by conventional route without introducing an additional processing step. A very thin and dense interfacial layer (2-3 µm) with compositional gradient was created by in situ reaction between anode and electrolyte although the anode substrate had high surface roughness (>5 µm), which is, however, beneficial for increasing triple phase boundaries where electrode reactions happen. A fuel cell with Ni-BaZr 0.4Ce 0.4Y 0.2O 3 anode, thin-film SDC electrolyte and Ba 0.5Sr 0.5Co 0.8Fe 0.2O 3-d (BSCF) cathode has an OCV as high as 1.022 V and delivered a power density of 462 mW cm -2 at 0.7 V at 600 °C. It greatly promises an intriguing fuel cell concept for efficient power generation. © This journal is the Owner Societies 2012. 2012 Journal Article http://hdl.handle.net/20.500.11937/45985 10.1039/c2cp41166k restricted
spellingShingle Su, C.
Shao, Zongping
Lin, Y.
Wu, Y.
Wang, H.
Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title_full Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title_fullStr Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title_full_unstemmed Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title_short Solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
title_sort solid oxide fuel cells with both high voltage and power output by utilizing beneficial interfacial reaction
url http://hdl.handle.net/20.500.11937/45985