title: In Operando Monitoring of the Pore Dynamics in Ordered Mesoporous Electrode Materials by Small Angle X-ray Scattering.
abstract: To monitor dynamic volume changes of electrode materials during electrochemical lithium storage and removal process is of utmost importance for developing high performance lithium storage materials. We herein report an in operando probing of mesoscopic structural changes in ordered mesoporous electrode materials during cycling with synchrotron-based small angel X-ray scattering (SAXS) technique. In operando SAXS studies combined with electrochemical and other physical characterizations straightforwardly show how porous electrode materials underwent volume changes during the whole process of charge and discharge, with respect to their own reaction mechanism with lithium. This comprehensive information on the pore dynamics as well as volume changes of the electrode materials will not only be critical in further understanding of lithium ion storage reaction mechanism of materials, but also enable the innovative design of high performance nanostructured materials for next generation batteries.
authors: †Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Gwi Ok
authors: GO
authors: Park
authors: †Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Jeongbae
authors: J
authors: Yoon
authors: ‡Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
authors: Eunjun
authors: E
authors: Park
authors: §Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Su Bin
authors: SB
authors: Park
authors: †Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Hyunchul
authors: H
authors: Kim
authors: §Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Kyoung Ho
authors: KH
authors: Kim
authors: §Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Xing
authors: X
authors: Jin
authors: ⊥Pohang Accelerator Laboratory, Pohang 790-784, Republic of Korea.
authors: Tae Joo
authors: TJ
authors: Shin
authors: ‡Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
authors: Hansu
authors: H
authors: Kim
authors: †Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Won-Sub
authors: WS
authors: Yoon
authors: †Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.|§Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors: Ji Man
authors: JM
authors: Kim
keywords: Li-storage; in operando monitoring; mesoporous electrode; pore dynamics; small-angle X-ray scattering