Annealing effect of amorphous Fe-Si-B-P-Cu precursors on microstructural evolution and redox behavior of nanoporous counterparts

Chaoqun Fu; Lijun Xu; Zhenhua Dan; Fengxiang Qin; Akihiro Makino; Hui Chang; Nobuyoshi Hara

doi:10.1016/j.jallcom.2017.08.045

Annealing effect of amorphous Fe-Si-B-P-Cu precursors on microstructural evolution and redox behavior of nanoporous counterparts

Chaoqun Fu, Lijun Xu, Zhenhua Dan, Fengxiang Qin, Akihiro Makino, Hui Chang, Nobuyoshi Hara

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Annealing effect of amorphous Fe_83.3Si₃B₁₀P₃Cu_0.7 precursor alloys on the formation of the nanoporous structure and their Redox behavior in alkaline conditions has been investigated. Annealing of amorphous Fe_83.3Si₃B₁₀P₃Cu_0.7 alloy causes the formation of nanocrystalline hetero-amorphous microstructure coexisting α-Fe grains and residual amorphous phase. Preferential dissolution of α-Fe grains in H₂SO₄ solution leads to the formation of nanoporous structure. The nanoporous electrodes due to the larger specific surface area show the better Redox performance than the nonporous counterpart electrodes. The nanoporous electrodes with almost one-order higher peak current densities than nonporous ones can be good candidates of the negative electrodes of Fe-air battery.

Original language	English
Pages (from-to)	810-819
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	726
DOIs	https://doi.org/10.1016/j.jallcom.2017.08.045
State	Published - 5 Dec 2017

Keywords

Annealing
Fe-air battery
Nanocrystalline Fe-based alloy
Nanoporous structure
Redox behavior

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10.1016/j.jallcom.2017.08.045

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title = "Annealing effect of amorphous Fe-Si-B-P-Cu precursors on microstructural evolution and redox behavior of nanoporous counterparts",

abstract = "Annealing effect of amorphous Fe83.3Si3B10P3Cu0.7 precursor alloys on the formation of the nanoporous structure and their Redox behavior in alkaline conditions has been investigated. Annealing of amorphous Fe83.3Si3B10P3Cu0.7 alloy causes the formation of nanocrystalline hetero-amorphous microstructure coexisting α-Fe grains and residual amorphous phase. Preferential dissolution of α-Fe grains in H2SO4 solution leads to the formation of nanoporous structure. The nanoporous electrodes due to the larger specific surface area show the better Redox performance than the nonporous counterpart electrodes. The nanoporous electrodes with almost one-order higher peak current densities than nonporous ones can be good candidates of the negative electrodes of Fe-air battery.",

keywords = "Annealing, Fe-air battery, Nanocrystalline Fe-based alloy, Nanoporous structure, Redox behavior",

author = "Chaoqun Fu and Lijun Xu and Zhenhua Dan and Fengxiang Qin and Akihiro Makino and Hui Chang and Nobuyoshi Hara",

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doi = "10.1016/j.jallcom.2017.08.045",

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T1 - Annealing effect of amorphous Fe-Si-B-P-Cu precursors on microstructural evolution and redox behavior of nanoporous counterparts

AU - Fu, Chaoqun

AU - Xu, Lijun

AU - Dan, Zhenhua

AU - Qin, Fengxiang

AU - Makino, Akihiro

AU - Chang, Hui

AU - Hara, Nobuyoshi

PY - 2017/12/5

Y1 - 2017/12/5

N2 - Annealing effect of amorphous Fe83.3Si3B10P3Cu0.7 precursor alloys on the formation of the nanoporous structure and their Redox behavior in alkaline conditions has been investigated. Annealing of amorphous Fe83.3Si3B10P3Cu0.7 alloy causes the formation of nanocrystalline hetero-amorphous microstructure coexisting α-Fe grains and residual amorphous phase. Preferential dissolution of α-Fe grains in H2SO4 solution leads to the formation of nanoporous structure. The nanoporous electrodes due to the larger specific surface area show the better Redox performance than the nonporous counterpart electrodes. The nanoporous electrodes with almost one-order higher peak current densities than nonporous ones can be good candidates of the negative electrodes of Fe-air battery.

AB - Annealing effect of amorphous Fe83.3Si3B10P3Cu0.7 precursor alloys on the formation of the nanoporous structure and their Redox behavior in alkaline conditions has been investigated. Annealing of amorphous Fe83.3Si3B10P3Cu0.7 alloy causes the formation of nanocrystalline hetero-amorphous microstructure coexisting α-Fe grains and residual amorphous phase. Preferential dissolution of α-Fe grains in H2SO4 solution leads to the formation of nanoporous structure. The nanoporous electrodes due to the larger specific surface area show the better Redox performance than the nonporous counterpart electrodes. The nanoporous electrodes with almost one-order higher peak current densities than nonporous ones can be good candidates of the negative electrodes of Fe-air battery.

KW - Annealing

KW - Fe-air battery

KW - Nanocrystalline Fe-based alloy

KW - Nanoporous structure

KW - Redox behavior

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SN - 0925-8388

VL - 726

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EP - 819

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Annealing effect of amorphous Fe-Si-B-P-Cu precursors on microstructural evolution and redox behavior of nanoporous counterparts

Abstract

Keywords

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