DataVXAdvanced MaterialsPaper
journal article·2021-11

Crystallographic‐Site‐Specific Structural Engineering Enables Extraordinary Electrochemical Performance of High‐Voltage LiNi0.5Mn1.5O4 Spinel Cathodes for Lithium‐Ion Batteries

Gemeng Liang, Vanessa K. Peterson, Zhibin Wu, Shilin Zhang, Junnan Hao, Cheng‐Zhang Lu, Cheng‐Hao Chuang, Jyh‐Fu Lee, Jue Liu, Grzegorz Leniec, Sławomir Maksymilian Kaczmarek, Anita M. D'Angelo, Bernt Johannessen, Lars Thomsen, Wei Kong Pang, Zaiping Guo

Advanced Materials· Volume 33· Issue 44
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Source abstract

Abstract

Abstract The development of reliable and safe high‐energy‐density lithium‐ion batteries is hindered by the structural instability of cathode materials during cycling, arising as a result of detrimental phase transformations occurring at high operating voltages alongside the loss of active materials induced by transition metal dissolution. Originating from the fundamental structure/function relation of battery materials, the authors purposefully perform crystallographic‐site‐specific structural engineering on electrode material structure, using the high‐voltage LiNi0.5Mn1.5O4 (LNMO) cathode as a representative, which directly addresses the root source of structural instability of the Fdm structure. By employing Sb as a dopant to modify the specific issue‐involved 16c and 16d sites simultaneously, the authors successfully transform the detrimental two‐phase reaction occurring at high‐voltage into a preferential solid‐solution reaction and significantly suppress the loss of Mn from the LNMO structure. The modified LNMO material delivers an impressive 99% of its theoretical specific capacity at 1 C, and maintains 87.6% and 72.4% of initial capacity after 1500 and 3000 cycles, respectively. The issue‐tracing site‐specific structural tailoring demonstrated for this material will facilitate the rapid development of high‐energy‐density materials for lithium‐ion batteries.
Source: crossref · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Extraction and Separation Processes · Advanced Battery Materials and Technologies

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

Affiliations

Faculty of Engineering Institute for Superconducting & Electronic Materials University of Wollongong Wollongong New South Wales 2500 Australia

Australian Centre for Neutron Scattering Australian Nuclear Science and Technology Organisation Sydney New South Wales 2234 Australia

Department of Nanomaterials for Energy Storage Material & Chemical Research Laboratory Industrial Technology Research Institute Hsinchu 310401 Taiwan

Department of Physics Tamkang University New Taipei City 25137 Taiwan

National Synchrotron Radiation Research Centre Hsinchu 30076 Taiwan

Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA

Department of Technical Physics Faculty of Mechanical Engineering and Mechatronics West Pomeranian University of Technology in Szczecin Al. Piastów 48 Szczecin 70–311 Poland

Australian Synchrotron Australian Nuclear Science and Technology Organisation Clayton Victoria 3168 Australia

School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide South Australia 5005 Australia

Funding

Australian Research Council · Australian Institute of Nuclear Science and Engineering

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