Reduced Lattice Constant in Al‐Doped LiMn 2 O 4 Nanoparticles for Boosted Electrochemical Lithium Extraction

Abstract Extracting lithium selectively and efficiently from brine sources is crucial for addressing energy and environmental challenges. The electrochemical system employing LiMn 2 O 4 (LMO) electrodes has been recognized as an effective method for lithium recovery. However, the lithium selectivity and stability of LMO need further enhancement for its practical applications. Herein, the Al‐doped LMO with reduced lattice constant is successfully fabricated through a facile one‐step solid‐state sintering method, leading to enhanced lithium selectivity. The reduced lattice constant in Al‐doped LMO is proved through spectroscopic analyses and theoretic calculations. Compared to the original LMO, the Al‐doped LMO…

• NN
  National Natural Science Foundation of China

  Awards: 52161145101, 2019YFC0408502, U1910210, 52192684, 51821006, 52200074, 52022093, 51925207
• UO
  University of Science and Technology of China
• NS
  National Synchrotron Radiation Laboratory

  Award: KY2060000173
• NK
  National Key Research and Development Program of China

  Awards: 2022YFA1504100, 2019YFC0408502
• FR
  Fundamental Research Funds for the Central Universities

  Awards: WK2060140026, 2019YFC0408502, 51821006