Spinel LiMn 2O 4 nanorods as lithium ion battery cathodes

Do Kyung Kim; P. Muralidharan; Hyun Wook Lee; Riccardo Ruffo; Yuan Yang; Candace K. Chan; Hailin Peng; Robert A. Huggins; Yi Cui

doi:10.1021/nl8024328

Spinel LiMn ₂O ₄ nanorods as lithium ion battery cathodes

Do Kyung Kim, P. Muralidharan, Hyun Wook Lee, Riccardo Ruffo, Yuan Yang, Candace K. Chan, Hailin Peng, Robert A. Huggins, Yi Cui

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

580 Scopus citations

Abstract

Spinel LiMn ₂O ₄ is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline β-MnO ₂ nanorods and their chemical conversion into free-standing single-crystalline LiMn ₂O ₄ nanorods using a simple solid-state reaction. The LiMn ₂O ₄ nanorods have an average diameter of 130 nm and length of 1.2 μm. Galvanostatic battery testing showed that LiMn ₂O ₄ nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn ₂O ₄ with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3V.

Original language	English (US)
Pages (from-to)	3948-3952
Number of pages	5
Journal	Nano Letters
Volume	8
Issue number	11
DOIs	https://doi.org/10.1021/nl8024328
State	Published - Nov 2008
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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title = "Spinel LiMn 2O 4 nanorods as lithium ion battery cathodes",

abstract = "Spinel LiMn 2O 4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline β-MnO 2 nanorods and their chemical conversion into free-standing single-crystalline LiMn 2O 4 nanorods using a simple solid-state reaction. The LiMn 2O 4 nanorods have an average diameter of 130 nm and length of 1.2 μm. Galvanostatic battery testing showed that LiMn 2O 4 nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn 2O 4 with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3V.",

author = "Kim, {Do Kyung} and P. Muralidharan and Lee, {Hyun Wook} and Riccardo Ruffo and Yuan Yang and Chan, {Candace K.} and Hailin Peng and Huggins, {Robert A.} and Yi Cui",

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AU - Kim, Do Kyung

AU - Muralidharan, P.

AU - Lee, Hyun Wook

AU - Ruffo, Riccardo

AU - Yang, Yuan

AU - Chan, Candace K.

AU - Peng, Hailin

AU - Huggins, Robert A.

AU - Cui, Yi

PY - 2008/11

Y1 - 2008/11

N2 - Spinel LiMn 2O 4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline β-MnO 2 nanorods and their chemical conversion into free-standing single-crystalline LiMn 2O 4 nanorods using a simple solid-state reaction. The LiMn 2O 4 nanorods have an average diameter of 130 nm and length of 1.2 μm. Galvanostatic battery testing showed that LiMn 2O 4 nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn 2O 4 with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3V.

AB - Spinel LiMn 2O 4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline β-MnO 2 nanorods and their chemical conversion into free-standing single-crystalline LiMn 2O 4 nanorods using a simple solid-state reaction. The LiMn 2O 4 nanorods have an average diameter of 130 nm and length of 1.2 μm. Galvanostatic battery testing showed that LiMn 2O 4 nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn 2O 4 with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3V.

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ER -

Spinel LiMn ₂O ₄ nanorods as lithium ion battery cathodes

Abstract

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