Shape-controlled synthesis of hierarchically layered lithium transition-metal oxide cathode materials by shear exfoliation in continuous stirred-tank reactors

Weibo Hua; Zhenguo Wu; Mingzhe Chen; Michael Knapp; Xiaodong Guo; Sylvio Indris; Joachim R. Binder; Natalia N. Bramnik; Benhe Zhong; Haipeng Guo; Shulei Chou; Yong-Mook Kang; Helmut Ehrenberg

doi:10.1039/C7TA08073E

Shape-controlled synthesis of hierarchically layered lithium transition-metal oxide cathode materials by shear exfoliation in continuous stirred-tank reactors†

Weibo Hua,

^abc Zhenguo Wu,^a Mingzhe Chen,^d Michael Knapp,^b Xiaodong Guo,*^a Sylvio Indris,*^b Joachim R. Binder,*^c Natalia N. Bramnik,^b Benhe Zhong,^a Haipeng Guo,^d Shulei Chou,

*^d Yong-Mook Kang*^e and Helmut Ehrenberg*^b

Author affiliations

* Corresponding authors

^a College of Chemical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China
E-mail: xiaodong2009@scu.edu.cn

^b Institute for Applied Materials-Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
E-mail: sylvio.indris@kit.edu, helmut.ehrenberg@kit.edu

^c Institute for Applied Materials-Ceramic Materials and Technologies (IAM-KWT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
E-mail: joachim.binder@kit.edu

^d Institute for Superconducting and Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW 2522, Australia
E-mail: shulei@uow.edu.au

^e Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, Republic of Korea
E-mail: dake1234@dongguk.edu

Abstract

Developing hierarchically layered cathode materials with high performance is key to further improving advanced lithium-ion batteries, but it is challenging to synthesize such systems with controllable shape on a large scale. We used a high-shear mixer to continuously prepare flower-like hydroxide precursors via a co-precipitation method in a continuous stirred-tank reactor (CSTR). After the lithiation reaction, hierarchical lithium transition-metal oxides with predominantly exposed electrochemically active {010} planes are produced. The electrochemical properties of these peculiar materials (i.e. LiNi_1/3Co_1/3Mn_1/3O₂, LiNi_0.6Co_0.2Mn_0.2O₂ and Li_1.2Ni_0.2Mn_0.6O₂) are demonstrated to be excellent. Particularly, LiNi_1/3Co_1/3Mn_1/3O₂ exhibits a durable high-rate capability with a capacity retention of 98.2% after 500 cycles at 20C between 2.7 and 4.3 V. This work provides a new technology to fabricate two-dimensional nanoarchitectured electrode materials. Moreover, the outstanding electrochemical properties of this hierarchically structured cathode material in combination with the scalable method make it highly interesting for commercialization.

Journal of Materials Chemistry A

Shape-controlled synthesis of hierarchically layered lithium transition-metal oxide cathode materials by shear exfoliation in continuous stirred-tank reactors†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Shape-controlled synthesis of hierarchically layered lithium transition-metal oxide cathode materials by shear exfoliation in continuous stirred-tank reactors

Social activity

Search articles by author

Spotlight

Advertisements