Galvanic replacement reactions in metal oxide nanocrystals

Myoung Hwan Oh; Taekyung Yu; Seung Ho Yu; Byungkwon Lim; Kyung Tae Ko; Marc Georg Willinger; Dong Hwa Seo; Byung Hyo Kim; Min Gee Cho; Jae Hoon Park; Kisuk Kang; Yung Eun Sung; Nicola Pinna; Taeghwan Hyeon

doi:10.1126/science.1234751

Galvanic replacement reactions in metal oxide nanocrystals

Myoung Hwan Oh, Taekyung Yu, Seung Ho Yu, Byungkwon Lim, Kyung Tae Ko, Marc Georg Willinger, Dong Hwa Seo, Byung Hyo Kim, Min Gee Cho, Jae Hoon Park, Kisuk Kang, Yung Eun Sung, Nicola Pinna, Taeghwan Hyeon

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

492 Scopus citations

Abstract

Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn₃O₄) nanocrystals were reacted with iron(II) perchlorate, hollow box-shaped nanocrystals of Mn₃O ₄/γ-Fe₂O₃ ("nanoboxes") were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of γ-Fe₂O₃ ("nanocages"). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co₃O₄/SnO₂ and Mn₃O₄/SnO₂.

Original language	English
Pages (from-to)	964-968
Number of pages	5
Journal	Science
Volume	340
Issue number	6135
DOIs	https://doi.org/10.1126/science.1234751
State	Published - 2013
Externally published	Yes

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title = "Galvanic replacement reactions in metal oxide nanocrystals",

abstract = "Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn3O4) nanocrystals were reacted with iron(II) perchlorate, hollow box-shaped nanocrystals of Mn3O 4/γ-Fe2O3 ({"}nanoboxes{"}) were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of γ-Fe2O3 ({"}nanocages{"}). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co3O4/SnO2 and Mn3O4/SnO2.",

author = "Oh, {Myoung Hwan} and Taekyung Yu and Yu, {Seung Ho} and Byungkwon Lim and Ko, {Kyung Tae} and Willinger, {Marc Georg} and Seo, {Dong Hwa} and Kim, {Byung Hyo} and Cho, {Min Gee} and Park, {Jae Hoon} and Kisuk Kang and Sung, {Yung Eun} and Nicola Pinna and Taeghwan Hyeon",

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doi = "10.1126/science.1234751",

language = "English",

volume = "340",

pages = "964--968",

journal = "Science",

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T1 - Galvanic replacement reactions in metal oxide nanocrystals

AU - Oh, Myoung Hwan

AU - Yu, Taekyung

AU - Yu, Seung Ho

AU - Lim, Byungkwon

AU - Ko, Kyung Tae

AU - Willinger, Marc Georg

AU - Seo, Dong Hwa

AU - Kim, Byung Hyo

AU - Cho, Min Gee

AU - Park, Jae Hoon

AU - Kang, Kisuk

AU - Sung, Yung Eun

AU - Pinna, Nicola

AU - Hyeon, Taeghwan

PY - 2013

Y1 - 2013

N2 - Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn3O4) nanocrystals were reacted with iron(II) perchlorate, hollow box-shaped nanocrystals of Mn3O 4/γ-Fe2O3 ("nanoboxes") were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of γ-Fe2O3 ("nanocages"). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co3O4/SnO2 and Mn3O4/SnO2.

AB - Galvanic replacement reactions provide a simple and versatile route for producing hollow nanostructures with controllable pore structures and compositions. However, these reactions have previously been limited to the chemical transformation of metallic nanostructures. We demonstrated galvanic replacement reactions in metal oxide nanocrystals as well. When manganese oxide (Mn3O4) nanocrystals were reacted with iron(II) perchlorate, hollow box-shaped nanocrystals of Mn3O 4/γ-Fe2O3 ("nanoboxes") were produced. These nanoboxes ultimately transformed into hollow cagelike nanocrystals of γ-Fe2O3 ("nanocages"). Because of their nonequilibrium compositions and hollow structures, these nanoboxes and nanocages exhibited good performance as anode materials for lithium ion batteries. The generality of this approach was demonstrated with other metal pairs, including Co3O4/SnO2 and Mn3O4/SnO2.

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U2 - 10.1126/science.1234751

DO - 10.1126/science.1234751

M3 - Article

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SN - 0036-8075

VL - 340

SP - 964

EP - 968

JO - Science

JF - Science

IS - 6135

ER -

Galvanic replacement reactions in metal oxide nanocrystals

Abstract

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