Layered-Layered-Spinel Cathode Materials Prepared by a High-Energy Ball-Milling Process for Lithium-ion Batteries

Soo Kim; Jae-Kyo Noh; Muratahan Aykol; Zhi Lu; Haesik Kim; Wonchang Choi; Chunjoong Kim; Kyung Yoon Chung; Chris Wolverton; Byung-Won Cho

doi:10.1021/acsami.5b08906

Layered-Layered-Spinel Cathode Materials Prepared by a High-Energy Ball-Milling Process for Lithium-ion Batteries

ACS Appl Mater Interfaces. 2016 Jan 13;8(1):363-70. doi: 10.1021/acsami.5b08906. Epub 2015 Dec 22.

Authors

Affiliations

¹ Department of Materials Science and Engineering, Northwestern University , 2220 Campus Drive, Evanston, Illinois 60208, United States.
² Center for Energy Convergence Research, Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
³ Department of Materials Science and Engineering, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Republic of Korea.

PMID: 26645115
DOI: 10.1021/acsami.5b08906

Abstract

In this work, we report the electrochemical properties of 0.5Li2MnO3·0.25LiNi0.5Co0.2Mn0.3O2·0.25LiNi0.5Mn1.5O4 and 0.333Li2MnO3·0.333LiNi0.5Co0.2Mn0.3O2·0.333LiNi0.5Mn1.5O4 layered-layered-spinel (L*LS) cathode materials prepared by a high-energy ball-milling process. Our L*LS cathode materials can deliver a large and stable capacity of ∼200 mAh g(-1) at high voltages up to 4.9 V, and do not show the anomalous capacity increase upon cycling observed in previously reported three-component cathode materials synthesized with different routes. Furthermore, we have performed synchrotron-based in situ X-ray diffraction measurements and found that there are no significant structural distortions during charge/discharge runs. Lastly, we carry out (opt-type) van der Waals-corrected density functional theory (DFT) calculations to explain the enhanced cycle characteristics and reduced phase transformations in our ball-milled L*LS cathode materials. Our simple synthesis method brings a new perspective on the use of the high-power L*LS cathodes in practical devices.

Keywords: high-energy ball-milling process; layered-layered-spinel cathode; lithium-ion battery; nanocomposite; three-component electrode.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.