DataVXACS Applied Materials & InterfacesPaper
journal article·2023-02-15Open access

High-Performance Layered Ni-Rich Cathode Materials Enabled by Stress-Resistant Nanosheets

Hekang Zhu, Tingting Yang, Pui-Kit Lee, Zijia Yin, Yu Tang, Tianyi Li, Leighanne C. Gallington, Yang Ren, Denis Y. W. Yu, Qi Liu

ACS Applied Materials & Interfaces· Volume 15· Issue 6
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Source abstract

Abstract

Layered O3-type transition metal oxides are promising cathode candidates for high-energy-density Li-ion batteries. However, the structural instability at the highly delithiated state and low kinetics at the fully lithiated state are arduous challenges to overcome. Here, a facile approach is developed to make secondary particles of Ni-rich materials with nanosheet primary grains. Because the alignment of the primary grains reduces internal stress buildup within the particle during charge–discharge and provides straightforward paths for Li transport, the as-synthesized Ni-rich materials do not undergo cracking upon cycling with higher overall Li + ion diffusion rates. Specifically, a LiNi 0.75 Co 0.14 Mn 0.11 O 2 cathode with nanosheet grains delivers a high reversible capacity of 206 mAh g –1 and shows ultrahigh cycling stability, e.g., 98% capacity retention over 500 cycles in a full cell with a graphite anode.
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Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Battery Materials · Semiconductor materials and devices · Supercapacitor Materials and Fabrication

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China

X-Ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Center for Green Research on Energy and Environmental Materials (GREEN), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan

Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China

Funding

Research Grants Council, University Grants Committee · Ministry of Science and Technology of the People's Republic of China · Science, Technology and Innovation Commission of Shenzhen Municipality · City University of Hong Kong

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