Inorganic Chemicals Industry >
Study on modification of spinel lithium manganate coated with lithium borate
Received date: 2022-01-27
Online published: 2022-09-22
Spinel lithium manganate is a research hotspot of cathode materials for lithium?ion batteries because of its excellent safety performance and low cost.However，the degradation of cycle performance caused by manganese dissolution is the main obstacle to the development of lithium manganite.With the increase of temperature，the dissolution of manganese intensifies，so the deterioration of the battery is more serious under high temperature conditions.Coating lithium borate on the surface of lithium manganate can inhibit the dissolution of manganese.Lithium borate can be uniformly coated on the surface of lithium manganate by high?energy ball milling.X-ray diffraction and electrochemical impedance spectroscopy showed that lithium borate would not cause the change of lithium manganate structure and the increase of battery impedance.Through the study of interface transfer resistance，it was found that the polarization of the battery would increase when the coating amount of lithium borate exceeded 2%（mass fraction），so the optimal coating amount of lithium borate was controlled at 2%.Compared with uncoated lithium manganate，coated lithium manganate showed excellent cycle performance for both lithium half battery and graphite full battery.especially at 60 ℃，the cycle performance was greatly improved.The volume energy density of soft packed full battery reached 308 W·h/L，and the capacity retention rate could reach 94.7% after 200 cycles at 1C.The coating of lithium borate could effectively inhibit the dissolution of manganese in lithium manganate and improve its cycle performance.
Key words： Li3BO3; LiMn2O4; lithium?ion battery; coating
Zhuoqin LIU , Xiaochong ZHOU , Liangjun MO . Study on modification of spinel lithium manganate coated with lithium borate[J]. Inorganic Chemicals Industry, 2022 , 54(9) : 90 -95 . DOI: 10.19964/j.issn.1006-4990.2021-0738
| [1] | ARMAND M， TARASCON J M.Building better batteries[J].Nature，2008，451（7179）:652-657. |
| [2] | XU Kang.Electrolytes and interphases in Li-ion batteries and beyond[J].Chemical Reviews，2014，114（23）:11503-11618. |
| [3] | 周兰，李旺，廖文俊.界面化学对镍锰酸锂正极材料电化学性能影响的研究现状及分析[J].无机盐工业，2021，53（11）:17-24. |
| [3] | ZHOU Lan， LI Wang， LIAO Wenjun.Research status and analysis of effect of interfacial chemistry on electrochemical properties of LiNi0.5Mn1.5O4 cathode materials[J].Inorganic Chemicals Industry，2021，53（11）:17-24. |
| [4] | WINTER M， BARNETT B， XU Kang.Before Li ion batteries[J].Chemical Reviews，2018，118（23）:11433-11456. |
| [5] | LI Jianyuan， LIN Cong， WENG Mouyi， et al.Structural origin of the high?voltage instability of lithium cobalt oxide[J].Nature Nano? technology，2021，16（5）:599-605. |
| [6] | ZHU Zhi， WANG Hua， LI Yao， et al.A surface Se-substituted LiCo[O2– δ Se δ ]cathode with ultrastable high?voltage cycling in pouch full?cells[J].Advanced Materials，2020，32（50）.Doi: 10.1002/adma.202005182. |
| [7] | GUO Xiaolong， SONG Bin， YU Guoping， et al.Size?dependent me?mory effect of the LiFePO4 electrode in Li-ion batteries[J].ACS Applied Materials & Interfaces，2018，10（48）:41407-41414. |
| [8] | JENSEN K M ?， CHRISTENSEN M， GUNNLAUGSSON H P， et al.Defects in hydrothermally synthesized LiFePO4 and LiFe1- x Mn x PO4 cathode materials[J].Chemistry of Materials，2013，25（11）:2282-2290. |
| [9] | WANG Renheng， LI Xinhai， WANG Zhixing， et al.Manganese dissolution from LiMn2O4 cathodes at elevated temperature:Methylene methanedisulfonate as electrolyte additive[J].Journal of Solid State Electrochemistry，2016，20（1）:19-28. |
| [10] | PUT B， VEREECKEN P M， LABYEDH N， et al.High cycling stability and extreme rate performance in nanoscaled LiMn2O4 thin films[J].ACS Applied Materials & Interfaces，2015，7（40）:22413-22420. |
| [11] | WARBURTON R E， IDDIR H， CURTISS L A， et al.Thermodynamic stability of low- and high?index spinel LiMn2O4 surface ter?minations[J].ACS Applied Materials & Interfaces，2016，8（17）:11108-11121. |
| [12] | FANG Guozhao， ZHU Chuyu， CHEN Minghui， et al.Suppressing manganese dissolution in potassium manganate with rich oxygen defects engaged high?energy?density and durable aqueous zinc-ion battery[J].Advanced Functional Materials，2019，29（15）.Doi:10.1002/adfm.201808375. |
| [13] | GAO Aolei， SUN Zhenhua， LI Shaopeng， et al.The mechanism of manganese dissolution on Li1.6Mn1.6O4 ion sieves with HCl[J].Dalton Transactions:Cambridge，England:2003，2018，47（11）:3864-3871. |
| [14] | WANG Jing， YU Yangyang， LI Bing， et al.Thermal synergy effect between LiNi0.5Co0.2Mn0.3O2 and LiMn2O4 enhances the safety of blended cathode for lithium ion batteries[J].ACS Applied Materials & Interfaces，2016，8（31）:20147-20156. |
| [15] | PENG Linfeng， REN Haotian， ZHANG Junzhao， et al.LiNbO3-coated LiNi0.7Co0.1Mn0.2O2 and chlorine?rich argyrodite enabling high?performance solid?state batteries under different temperatures[J].Energy Storage Materials，2021，43:53-61. |
| [16] | OHTA S， KOMAGATA S， SEKI J， et al.All?solid?state lithium ion battery using garnet?type oxide and Li3BO3 solid electrolytes fabricated by screen?printing[J].Journal of Power Sources，2013，238:53-56. |
| [17] | CADY C W， GARDNER G， MARON Z O， et al.Tuning the electrocatalytic water oxidation properties of AB2O4 spinel nanocrystals:A（Li，Mg，Zn） and B（Mn，co） site variants of LiMn2O4 [J].ACS Catalysis，2015，5（6）:3403-3410. |
| [18] | OHTA S， SEKI J， YAGI Y， et al.Co-sinterable lithium garnet?type oxide electrolyte with cathode for all?solid?state lithium ion battery[J].Journal of Power Sources，2014，265:40-44. |
/
| 〈 |
|
〉 |