biostudies-literatureSu YNatural Science Foundation of QinghaiNational Natural Science Foundation of ChinaYouth Innovation Promotion Association of the Chinese Academy of Sciences2150-2159https://www.ebi.ac.uk/biostudies/studies/S-EPMC8979199biostudies-literatureUnknown12(4)Modifying the structure of Li_1.6Mn_1.6O₄ (LMO) to enhance its structural stability and adsorption capacity is an effective method to generate materials to recover Li⁺ ions from mixed solution. Herein, the co-doping of trace non-metal ion (S) and metal ion (Al) into Li_1.6Mn_1.6O₄ (LMO-SAl) is established and shows excellent Li⁺ adsorption capacity and Mn anti-dissolution properties. The adsorption capacity (when [Li⁺] is 6 mmol L^-1) is increased from 26.1 mg g^-1 to 33.7 mg g^-1. This is attributed to improved charge density <i>via</i> substitution of S at O sites, which facilitates the adsorption/desorption process. The Mn dissolution is also reduced from 5.4% to RSC advancesEnhancing adsorption capacity and structural stability of Li_1.6Mn_1.6O₄ adsorbents by anion/cation co-doping.PMC8979199U20A20141513022802020-ZJ-9012016377U1607105Qian ZQian FSu YfalseEnhancing adsorption capacity and structural stability of Li_1.6Mn_1.6O₄ adsorbents by anion/cation co-doping.Modifying the structure of Li_1.6Mn_1.6O₄ (LMO) to enhance its structural stability and adsorption capacity is an effective method to generate materials to recover Li⁺ ions from mixed solution. Herein, the co-doping of trace non-metal ion (S) and metal ion (Al) into Li_1.6Mn_1.6O₄ (LMO-SAl) is established and shows excellent Li⁺ adsorption capacity and Mn anti-dissolution properties. The adsorption capacity (when [Li⁺] is 6 mmol L^-1) is increased from 26.1 mg g^-1 to 33.7 mg g^-1. This is attributed to improved charge density <i>via</i> substitution of S at O sites, which facilitates the adsorption/desorption process. The Mn dissolution is also reduced from 5.4% to 2022-01-01T00:00:00Z2022 Jan2025-04-19T13:00:53.708Z2025-04-19T13:00:53.708ZS-EPMC89791993542522310.1039/d1ra07720a