Spectroscopic Evidence of Surface Li-Depletion of Lithium Transition-Metal Phosphates
Source abstract
Abstract
The surface chemistries of carefully synthesized, phase pure lithium transition-metal phosphates LiTMPO4 (TM = Fe, Mn, Co, Ni) have been determined using a combination of surface spectroscopic techniques. Results obtained with X-ray photoelectron spectroscopy, Raman spectroscopy, and soft X-ray absorption spectroscopy indicate the presence of surface Li-depletion and mixed chemical states of transition-metal (TM) ions across the family. The extent of surface TM mixed chemical states has been found responsible for changes in color and optical absorption edge positions, which are often used to validate electronic band structure calculations. These characteristics are common in many complex metal oxide ceramics and may not be unique to lithium metal phosphate battery materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Future Environments and Science and Engineering Faculty, Queensland University of Technology (QUT), Brisbane, Queensland 4001, Australia
CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia
CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd., Qingdao 266031, China
CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australia
Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
Funding
Commonwealth Scientific and Industrial Research Organisation · China Railway Rolling Stock Corporation · Rail Manufacturing Cooperative Research Centre
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