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

Arizona State University

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

499 Citations (Scopus)

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
Pages (from-to)	3948-3952
Number of pages	5
Journal	Nano letters
Volume	8
Issue number	11
DOIs	https://doi.org/10.1021/nl8024328
Publication status	Published - Nov 1 2008

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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@article{2695996319de4bcf99fd454d7900c708,

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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T1 - Spinel LiMn 2O 4 nanorods as lithium ion battery cathodes

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 - 2008/11/1

Y1 - 2008/11/1

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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