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Revealing unusual storage failure of single-crystal high-nickel cathodes during high-temperature and high-humidity

Ran An1,2, Yuefeng Su1,3,4, Yihong Wang1,3

  • 1School of Materials Science and Engineering, Beijing Key Laboratory of Environmental Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China. ningli@bit.edu.cn.

Chemical Communications (Cambridge, England)
|June 27, 2025
PubMed

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Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...