Abstract
Nanostructured λ-MnO2 and α-MnO2 are investigated for use in rechargeable Mg ion battery (MIB) cathodes. In order to prepare nanosized particles, the manganese dioxides are prepared by the acid treatment of spinel MgMn2O4 synthesized using the Pechini method. X-ray diffraction analysis indicates that the resulting MnO2 consists of multiple phases, λ-MnO2, α-MnO2, and β-MnO2, depending on the leaching time in acid solution. Upon the first charge-discharge cycle in acetonitrile electrolyte, the λ-MnO2 based electrode shows larger reversible capacity of ∼330 mAh g-1 compared to an electrode containing a large amount of α-MnO2. This enhanced capacity is associated with the facile charge-transfer reaction of Mg ions at the MnO2/electrolyte interfaces. The capacity fading of MnO2 in different electrolytes is also discussed in terms of the formation of a surface layer at the electrode/electrolyte interface during the charging process.
| Original language | English |
|---|---|
| Pages (from-to) | 210-215 |
| Number of pages | 6 |
| Journal | Journal of Power Sources |
| Volume | 273 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
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High-capacity nanostructured manganese dioxide cathode for rechargeable magnesium ion batteries. / Kim, Ju Sik; Chang, Won Seok; Kim, Ryoung Hee; Kim, Dong Young; Han, Dong Wook; Lee, Kyu Hyoung; Lee, Seok Soo; Doo, Seok Gwang.
In: Journal of Power Sources, Vol. 273, 01.01.2015, p. 210-215.Research output: Contribution to journal › Article
TY - JOUR
T1 - High-capacity nanostructured manganese dioxide cathode for rechargeable magnesium ion batteries
AU - Kim, Ju Sik
AU - Chang, Won Seok
AU - Kim, Ryoung Hee
AU - Kim, Dong Young
AU - Han, Dong Wook
AU - Lee, Kyu Hyoung
AU - Lee, Seok Soo
AU - Doo, Seok Gwang
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Nanostructured λ-MnO2 and α-MnO2 are investigated for use in rechargeable Mg ion battery (MIB) cathodes. In order to prepare nanosized particles, the manganese dioxides are prepared by the acid treatment of spinel MgMn2O4 synthesized using the Pechini method. X-ray diffraction analysis indicates that the resulting MnO2 consists of multiple phases, λ-MnO2, α-MnO2, and β-MnO2, depending on the leaching time in acid solution. Upon the first charge-discharge cycle in acetonitrile electrolyte, the λ-MnO2 based electrode shows larger reversible capacity of ∼330 mAh g-1 compared to an electrode containing a large amount of α-MnO2. This enhanced capacity is associated with the facile charge-transfer reaction of Mg ions at the MnO2/electrolyte interfaces. The capacity fading of MnO2 in different electrolytes is also discussed in terms of the formation of a surface layer at the electrode/electrolyte interface during the charging process.
AB - Nanostructured λ-MnO2 and α-MnO2 are investigated for use in rechargeable Mg ion battery (MIB) cathodes. In order to prepare nanosized particles, the manganese dioxides are prepared by the acid treatment of spinel MgMn2O4 synthesized using the Pechini method. X-ray diffraction analysis indicates that the resulting MnO2 consists of multiple phases, λ-MnO2, α-MnO2, and β-MnO2, depending on the leaching time in acid solution. Upon the first charge-discharge cycle in acetonitrile electrolyte, the λ-MnO2 based electrode shows larger reversible capacity of ∼330 mAh g-1 compared to an electrode containing a large amount of α-MnO2. This enhanced capacity is associated with the facile charge-transfer reaction of Mg ions at the MnO2/electrolyte interfaces. The capacity fading of MnO2 in different electrolytes is also discussed in terms of the formation of a surface layer at the electrode/electrolyte interface during the charging process.
UR - http://www.scopus.com/inward/record.url?scp=84907790388&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907790388&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2014.07.162
DO - 10.1016/j.jpowsour.2014.07.162
M3 - Article
AN - SCOPUS:84907790388
VL - 273
SP - 210
EP - 215
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -