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Study and Property Characterization of LiMn[sub.2]O[sub.4] Synthesized from Octahedral Mn[sub.3]O[sub.4]

Sustainability (Basel, Switzerland), 2023-09, Vol.15 (18) [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;ISSN: 2071-1050 ;EISSN: 2071-1050 ;DOI: 10.3390/su151813858

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  • Title:
    Study and Property Characterization of LiMn[sub.2]O[sub.4] Synthesized from Octahedral Mn[sub.3]O[sub.4]
  • Author: Wang, Hao ; Wang, Jiawei ; Wang, Haifeng ; Wang, Song ; Dong, Xinyu ; Hao, Wenhao ; Lu, Ju ; Lu, Fanghai
  • Subjects: Raw materials
  • Is Part Of: Sustainability (Basel, Switzerland), 2023-09, Vol.15 (18)
  • Description: The structure of Mn[sub.3]O[sub.4] with an octahedron structure was similar to that of LiMn[sub.2]O[sub.4], and the lithium manganate prepared with it had good electrochemical performance. During the preparation of octahedron Mn[sub.3]O[sub.4], the effects of the pH regulator, temperature, and reaction pH on its morphology, specific surface area, and other properties were studied in this paper. LiMn[sub.2]O[sub.4] was prepared from Octahedron Mn[sub.3]O[sub.4] obtained by using better technology. The effects of calcination time and temperature on the physicochemical and electrochemical properties of LiMn[sub.2]O[sub.4] were studied. The research results indicated that the optimal synthesis conditions for Mn[sub.3]O[sub.4] were as follows: ammonia water was used as a pH regulator and complexing agent, reaction pH was 8, reaction temperature was 80 °C, reaction time was 12 h, and oxygen flow rate was 3 L∙min[sup.−1]. The LiMn[sub.2]O[sub.4] synthesized had a good octahedron morphology when the calcination temperature was 800 °C and the calcination time was 10 h. The first discharge-specific capacity was 121.9 mAh∙g[sup.−1] at a current density of 0.2 C, the discharge-specific capacity was 114.1 mAh∙g[sup.−1] after 100 cycles, and the capacity retention rate was 93.6%. Therefore, the lithium manganate prepared by using octahedron manganous oxide had good electrochemical reversibility and a good application prospect.
  • Publisher: MDPI AG
  • Language: English
  • Identifier: ISSN: 2071-1050
    EISSN: 2071-1050
    DOI: 10.3390/su151813858
  • Source: GFMER Free Medical Journals
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
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