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Nanostructural Uniformity of Ordered Mesoporous Materials: Governing Lithium Storage Behaviors
Author(s) -
Park Gwi Ok,
Yoon Jeongbae,
Park Su Bin,
Li Zhenghua,
Choi Yun Seok,
Yoon WonSub,
Kim Hansu,
Kim Ji Man
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201702985
Subject(s) - mesoporous material , lithium (medication) , materials science , energy storage , nanostructure , electrode , nanotechnology , power density , energy density , chemical engineering , power (physics) , engineering physics , catalysis , chemistry , organic chemistry , thermodynamics , physics , medicine , engineering , endocrinology
Abstract Nanostructured materials make a considerable impact on the performance of lithium‐storage characteristics in terms of the energy density, power density, and cycle life. Direct experimental observation, by a comparison of controlled nanostructural uniformity of electrode materials, reveals that the lithium‐storage behaviors of mesoporous MoO 2 and CuO electrodes are linearly correlated with their nanostructural uniformity. Reversible capacities of mesoporous MoO 2 and CuO electrodes with well‐developed nanostructures (1569 mA h g −1 for MoO 2 and 1029 mA h g −1 for CuO) exceed their theoretical capacity based on the conversion reaction (838 mA h g −1 for MoO 2 and 674 mA h g −1 for CuO). Given that exact understanding of the origin of the additional capacity is essential in maximizing the energy density of electrode material, this work may help to gain some insights into the development of high energy‐density lithium‐storage materials for next‐generation lithium rechargeable batteries.