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钠离子电池作为可替代锂离子电池的下一代电池，具有独特优势，然而要开发出低成本、良好可逆性和长循环寿命的电极材料仍然存在许多技术难题。本文通过简单的共沉淀法合成Ni~Ⅱ0.4Fe~Ⅱ0.2Mn~Ⅱ0.4(OH)2前驱体，再在空气气氛下加入碳酸钠进行煅烧，制备得到用于钠离子电池的NaNi0.4Fe0.2Mn0.4O2正极材料。利用X射线衍射(XRD)和扫描电镜(SEM)表征材料的物相结构，结果表明制备的材料是典型的层状斜方六面体结构，部分材料呈现单晶特征。采用恒流充放电的测试方法表征材料的电化学性能。在0.1 C的电流密度下，该材料的初始充电容量可达141.9 mAh/g,放电容量为140.0 mAh/g,首次库仑效率高达98.7%。此外，在0.2 C、0.5 C、1 C、2 C和3 C的倍率下，该材料的放电比容量分别为129.5 mAh/g、112.6 mAh/g、97.8 mAh/g、82.9 mAh/g和72.8 mAh/g,且在0.5 C下循环100圈后的容量保持率约为70.0%,具有良好的倍率性和一定的循环稳定性。
Abstract：Sodium ion batteries have unique advantages as the next generation batteries that could replace lithium ion batteries, however, the development of electrode materials with low cost, good reversibility and long cycle life still remains many technical difficulties.NaNi0.4Fe0.2Mn0.4O2 cathode material for sodium ion batteries was prepared by a simple co-precipitation synthesis of Ni~Ⅱ0.4Fe~Ⅱ0.2Mn~Ⅱ0.4(OH)2 precursor, which was then annealed with Na2CO3 in air atmosphere.The structure and morphologies of the as-prepared materials were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM).The results showed that the NaNi0.4Fe0.2Mn0.4O2 had a typical layered rhombohedral structure and a large portion of the material had a characteristic of single crystal.The electrochemical properties of the NaNi0.4Fe0.2Mn0.4O2 material were studied by galvanostatic charge-discharge test.The charge and discharge capacity of the first cycle is 141.9 mAh/g and 140.0 mAh/g at a rate of 0.1 C with an initial coulombic efficiency of 98.7%.In addition, the NaNi0.4Fe0.2Mn0.4O2 could deliver discharge capacities of 129.5 mAh/g, 112.6 mAh/g, 97.8 mAh/g, 82.9 mAh/g and 72.8 mAh/g at 0.2 C,0.5 C,1 C,2 C and 3 C rate, respectively.The capacity retention was about 70.0% after 100 cycles at 0.5 C,showing a good rate capability and a limited cyclability.
[1] SLATER M D,KIM D,LEE E,et al.Sodium-ion batteries[J].Advanced Functional Materials,2013,23(8):947-958.
[2] PAN H L,HU Y S,CHEN L Q.Room-temperature stationary sodium-ion batteries for large-scale electric energy storage[J].Energy & Environmental Science,2013,6(8):2338-2360.
[3] 黄剑锋，王彩薇，李嘉胤，等.钠离子电池碳基负极材料的研究进展[J].材料导报，2017,31(21):19-23.
[4] 程凤丽，柳伟.以蒲草绒为碳源制备多孔碳及其在电化学中的应用[J].电池工业，2017,21(1):20-25.
[5] 李苗苗，邱祥云，尹延鑫，等.钠离子电池层状氧化物正极材料改性研究进展[J].过程工程学报，2023,23(6):799-813.
[6] 师文君，孙中辉，宋忠乾，等.钠离子电池层状过渡金属氧化物正极材料研究进展[J].应用化学，2023,40(4):583-596.
[7] 潘雯丽，关文浩，姜银珠.聚阴离子型钠离子电池正极材料的研究进展[J].物理化学学报，2020,36(5):69-80.
[8] 李欢，何妍妍，周国伟.普鲁士蓝及普鲁士蓝类化合物材料在钠离子电池中的研究进展[J].材料导报，2021,35(23):23050-23056.
[9] 李现红，吕浩然，祝青凯，等.层状氧化物正极材料在钠离子电池中的应用研究[J].电池工业，2023,27(4):186-190.
[10] DELMAS C,FOUASSIER C,HAGENMULLER P.Structural classification and properties of the layered oxides[J].Physica B+C,1980,99(1/2/3/4):81-85.
[11] LEI Y C,LI X,LIU L,et al.Synthesis and stoichiometry of different layered sodium cobalt oxides[J].Chemistry of Materials,2014,26(18):5288-5296.
[12] LU Z H,DAHN J R.In situ X-Ray diffraction study of P2-Na2/3[Ni1/3Mn2/3]O2[J].Journal of the Electrochemical Society,2001,148(11):A1225.
[13] KOMABA S,YABUUCHI N,NAKAYAMA T,et al.Study on the reversible electrode reaction of Na(1-x)Ni(0.5)Mn(0.5)O2 for a rechargeable sodium-ion battery[J].Inorganic Chemistry,2012,51(11):6211-6220.
[14] YABUUCHI N,KAJIYAMA M,IWATATE J,et al.P2-type Nax[Fe1/2Mn1/2]O2 made from earth-abundant elements for rechargeable Na batteries[J].Nature Materials,2012,11(6):512-517.
[15] 曹永安，游济远，邹家轩，等.钠离子电池预钠化技术研究进展[J].精细石油化工，2023,40(2):75-80.
[16] KOMABA S,NAKAYAMA T,OGATA A,et al.Electrochemically reversible sodium intercalation of layered NaNi0.5Mn0.5O2 and NaCrO2[J].ECS Transactions,2009,16(42):43-55.
[17] YABUUCHI N,YANO M,YOSHIDA H,et al.Synthesis and electrode performance of O3-Type NaFeO2-NaNi1/2Mn1/2O2 Solid solution for rechargeable sodium batteries[J].Journal of the Electrochemical Society,2013,160(5):A3131-A3137.
[18] KIM D,LEE E,SLATER M,et al.Layered Na[Ni1/3Fe1/3Mn1/3]O2 cathodes for Na-ion battery application[J].Electrochemistry Communications,2012,18:66-69.
[19] WANG H B,DING F X,WANG Y Q,et al.In situ plastic-crystal-coated cathode toward high-performance Na-ion batteries[J].ACS Energy Letters,2023,8(3):1434-1444.
[20] YUAN D D,WANG Y X,CAO Y L,et al.Improved electrochemical performance of Fe-substituted NaNi0.5Mn0.5O2 cathode materials for sodium-ion batteries[J].ACS Applied Materials & Interfaces,2015,7(16):8585-8591.
[21] WANG H B,GU M Y,JIANG J Y,et al.An O3-type NaNi0.5Mn0.3Ti0.2O2 compound as new cathode material for room-temperature sodium-ion batteries[J].Journal of Power Sources,2016,327:653-657.
基本信息:
DOI：10.19996/j.cnki.ChinBatlnd.2024.02.004
中图分类号:TM912
引用信息:
[1]王洪波,向燕宁,孟小吻等.钠离子电池正极材料NaNi_(0.4)Fe_(0.2)Mn_(0.4)O_2的制备与储钠性能[J].电池工业,2024,28(02):66-71.DOI:10.19996/j.cnki.ChinBatlnd.2024.02.004.
基金信息:
河南省高等学校重点科研项目(20B150005); 河南工学院博士科研启动基金(KQ1849)