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Surface Modification of Lithium Manganate Cathode Materials by Sol-Gel Synthesis of Tin Oxide
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Xuezhen XIE, Haixin CHEN, Youming YE, Youhuan WEI
Mining and Metallurgical Engineering | 2026, 46(2) : 184 - 189
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Mining and Metallurgical Engineering | 2026, 46(2): 184-189
• MATERIALS •
Surface Modification of Lithium Manganate Cathode Materials by Sol-Gel Synthesis of Tin Oxide
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Xuezhen XIE, Haixin CHEN, Youming YE, Youhuan WEI
Affiliations
  • Guangxi Key Laboratory of Green Preparation and Application of Inorganic Materials, College of Chemistry and Materials Engineering, Guangxi Science & Technology Normal University, Laibin 546199, Guangxi, China
doi: 10.3969/j.issn.0253-6099.2026.02.030
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To optimize the electrochemical performance of lithium manganate (LMO) cathode materials, metal oxides (SnO2, ZrO2, La2O3, TiO2) were employed for the coating modification of LMO cathodes. The results show that metal oxide coatings do not change the basic morphology and spinel octahedral structure of LMO cathode materials. The SnO2-coated cathode material (SnO2@LMO) exhibits better electrochemical performance than those coated with other oxides. SnO2@LMO delivers an initial discharge specific capacity of 109.87 mAh/g at 1C rate, with a capacity cycle retention rate as high as 98.01%. At high rates, it shows slower capacity fading and superior rate capability. CV and EIS analyses confirm that the SnO2 coating forms a stable initial interface, enabling SnO2@LMO to maintain good reversibility after cycling. SnO2@LMO has both the lowest surface film resistance (Rs) and charge transfer resistance (Rct), delivers optimal interface stability and charge transfer kinetics.

lithium manganate  /  metal oxide  /  surface modification  /  sol-gel method  /  surface coating  /  cathode material
谢雪珍, 陈海欣, 叶有明, 韦友欢. 二氧化锡溶胶凝胶法表面修饰锰酸锂正极材料的研究. 矿冶工程杂志, 2026 , 46 (2) : 184 -189 . DOI: 10.3969/j.issn.0253-6099.2026.02.030
Xuezhen XIE, Haixin CHEN, Youming YE, Youhuan WEI. Surface Modification of Lithium Manganate Cathode Materials by Sol-Gel Synthesis of Tin Oxide[J]. Mining and Metallurgical Engineering, 2026 , 46 (2) : 184 -189 . DOI: 10.3969/j.issn.0253-6099.2026.02.030
Appendix
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Year 2026 volume 46 Issue 2
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doi: 10.3969/j.issn.0253-6099.2026.02.030
  • Receive Date：2025-11-01
  • Online Date：2026-10-08
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  • Received：2025-11-01
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    Guangxi Key Laboratory of Green Preparation and Application of Inorganic Materials, College of Chemistry and Materials Engineering, Guangxi Science & Technology Normal University, Laibin 546199, Guangxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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