无机材料学报 ›› 2026, Vol. 41 ›› Issue (9): 1220-1228.DOI: 10.15541/jim20250430
杨紫程1(
), 范广新1,2(
), 袁振洛3, 刘宝忠3, 毛英杰1
收稿日期:2025-10-29
修回日期:2026-01-22
出版日期:2026-09-20
网络出版日期:2026-02-05
通讯作者:
范广新, 副教授. E-mail: fangx@hpu.edu.cn作者简介:杨紫程(2000-), 男, 硕士研究生. E-mail: 3034991831@qq.com
基金资助:
YANG Zicheng1(
), FAN Guangxin1,2(
), YUAN Zhenluo3, LIU Baozhong3, MAO Yingjie1
Received:2025-10-29
Revised:2026-01-22
Published:2026-09-20
Online:2026-02-05
Contact:
FAN Guangxin, associate professor. E-mail:fangx@hpu.edu.cn
About author:YANG Zicheng (2000-), male, Master candidate. E-mail: 3034991831@qq.com
Supported by:摘要:
LiNi0.9Mn0.1O2 (NM91)因高能量密度、良好的成本效益及环境友好性, 被认为是极具应用前景的锂离子电池正极材料之一, 然而, 较差的倍率性能和循环性能阻碍了其进一步发展。本研究以MgO和Y2O3为原料, 采用高温固相法对NM91分别进行MgO单包覆及MgO/Y2O3复合包覆, 制得样品NM91-M和NM91-MY, 并对改性效果及机理进行研究。结果表明, 包覆不改变材料晶型, 但会提高其表面粗糙度, 抑制材料在循环过程中晶格的收缩和膨胀, 减缓电解液侵蚀, 进而提升材料的综合性能。其中, 复合包覆因引入Y2O3, 在清除NM91表面残锂的同时生成快离子导体LiYO2, 显著降低材料界面阻抗并提升离子扩散能力, 表现出最优的改性效果。复合包覆后, 材料在5C (1C=180 mA·g-1)下的放电比容量由90.7 mAh·g-1提高到129.7 mAh·g-1; 1C下循环150周后的比容量保持率从73.3%提高到87.9%。即便在4.5 V高截止电压下循环100周(1C), NM91-MY仍保持85.8%的比容量保持率, 远高于NM91 (70.5%)。此外, 150周循环后材料的热分解温度从223.5 ℃提升至230.5 ℃。本研究表明, MgO/Y2O3复合包覆是提升NM91电化学性能与热稳定性的有效策略。
中图分类号:
杨紫程, 范广新, 袁振洛, 刘宝忠, 毛英杰. MgO/Y2O3复合包覆对LiNi0.9Mn0.1O2结构及性能的影响[J]. 无机材料学报, 2026, 41(9): 1220-1228.
YANG Zicheng, FAN Guangxin, YUAN Zhenluo, LIU Baozhong, MAO Yingjie. Effect of MgO/Y2O3 Composite Coating on the Structure and Properties of LiNi0.9Mn0.1O2[J]. Journal of Inorganic Materials, 2026, 41(9): 1220-1228.
图1 NM91、NM91-M和NM91-MY的XRD谱图(a)和NM91-MY的XRD Rietveld精修图(b)
Fig. 1 XRD patterns of NM91, NM91-M and NM91-MY (a), and Rietveld XRD refinement of NM91-MY (b)
| Material | a=b/Å | c/Å | V/Å3 | I(003)/I(104) |
|---|---|---|---|---|
| NM91 | 2.87962 | 14.21669 | 102.1 | 2.088 |
| NM91-M | 2.87947 | 14.21753 | 102.1 | 2.296 |
| NM91-MY | 2.87779 | 14.20794 | 101.9 | 2.638 |
表1 NM91、NM91-M和NM91-MY的晶体结构参数
Table 1 Crystal structure parameters for NM91, NM91-M and NM91-MY
| Material | a=b/Å | c/Å | V/Å3 | I(003)/I(104) |
|---|---|---|---|---|
| NM91 | 2.87962 | 14.21669 | 102.1 | 2.088 |
| NM91-M | 2.87947 | 14.21753 | 102.1 | 2.296 |
| NM91-MY | 2.87779 | 14.20794 | 101.9 | 2.638 |
图2 NM91 (a, b)、NM91-M (c)和NM91-MY (d, e)的SEM照片; NM91-M (f)和NM91-MY (g)的EDS元素分布图
Fig. 2 SEM images of NM91 (a, b), NM91-M (c) and NM91-MY (d, e); EDS elemental distribution mappings of NM91-M (f) and NM91-MY (g)
图4 NM91、NM91-M和NM91-MY在2.7~4.3 V下的初始充放电曲线(a)、倍率性能(b)和循环性能(c)
Fig. 4 Initial charge/discharge curves (a), rate performance (b) and cycling performance (c) of NM91, NM91-M and NM91-MY within the voltage range of 2.7-4.3 V Colorful figures are available on website
图5 NM91、NM91-M和NM91-MY在2.7~4.5 V下的倍率性能(a)和循环性能(b)
Fig. 5 Rate performance (a) and cycling performance (b) of NM91, NM91-M and NM91-MY within the voltage range of 2.7-4.5 V Colorful figures are available on website
图6 NM91 (a)、NM91-M (b)、NM91-MY (c)前三周的CV曲线
Fig. 6 CV curves of NM91 (a), NM91-M (b) and NM91-MY (c) in the first three cycles Colorful figures are available on website
图7 NM91、NM91-M、NM91-MY的EIS谱图及等效电路图(a)和Z′-ω-1/2拟合直线(b)
Fig. 7 EIS spectra and equivalent circuit diagram (a) and Z'-ω-1/2 fitting lines (b) of NM91、NM91-M and NM91-MY
| Material | Rs/Ω | Rct/Ω | DLi+/(×10-13, cm2·s-1) |
|---|---|---|---|
| NM91 | 21.73 | 318.9 | 2.59 |
| NM91-M | 13.71 | 255.1 | 3.97 |
| NM91-MY | 7.32 | 64.9 | 11.32 |
表2 NM91、NM91-M和NM91-MY的EIS拟合结果及Li+扩散系数
Table 2 Fitting results of EIS and diffusion coefficients of Li+ for NM91, NM91-M and NM91-MY
| Material | Rs/Ω | Rct/Ω | DLi+/(×10-13, cm2·s-1) |
|---|---|---|---|
| NM91 | 21.73 | 318.9 | 2.59 |
| NM91-M | 13.71 | 255.1 | 3.97 |
| NM91-MY | 7.32 | 64.9 | 11.32 |
图8 NM91、NM91-M和NM91-MY在2.7~4.3 V下150周循环前后的XRD谱图(a)和局部放大图(b)
Fig. 8 XRD patterns (a) and magnified areas (b) of NM91, NM91-M and NM91-MY before and after 150 cycles within the voltage range of 2.7-4.3 V
图9 NM91 (a, b)、NM91-M (c)、NM91-MY (d)电极在2.7~ 4.5 V下循环100周后的SEM照片
Fig. 9 SEM images of NM91 (a, b), NM91-M (c) and NM91- MY (d) after 100 cycles within the voltage range of 2.7-4.5 V
| Material | Voltage/V | Discharge specific capacity/(mAh·g-1) | Specific capacity retention@1C | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.2C | 0.5C | 1C | 2C | 5C | 0.2C | 100 cycles | 150 cycles | ||
| NM91 | 4.3 | 192.7 | 173.3 | 151.2 | 140.0 | 90.7 | 181.0 | 77.5% | 73.3% |
| NM91-M | 189.2 | 171.7 | 151.8 | 140.6 | 98.4 | 180.3 | 87.6% | 84.6% | |
| NM91-MY | 196.6 | 176.6 | 159.7 | 153.7 | 129.7 | 183.5 | 91.0% | 87.9% | |
| NM91 | 4.5 | 197.5 | 178.7 | 160.0 | 143.2 | 113.6 | 169.6 | 70.5% | |
| NM91-M | 200.6 | 184.6 | 174.2 | 162.1 | 138.1 | 183.4 | 78.6% | ||
| NM91-MY | 218.5 | 202.7 | 189.0 | 175.8 | 146.1 | 198.8 | 85.8% | ||
表S1 NM91、NM91-M和NM91-MY的电化学性能
Table S1 Electrochemical performance of NM91, NM91-M and NM91-MY
| Material | Voltage/V | Discharge specific capacity/(mAh·g-1) | Specific capacity retention@1C | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.2C | 0.5C | 1C | 2C | 5C | 0.2C | 100 cycles | 150 cycles | ||
| NM91 | 4.3 | 192.7 | 173.3 | 151.2 | 140.0 | 90.7 | 181.0 | 77.5% | 73.3% |
| NM91-M | 189.2 | 171.7 | 151.8 | 140.6 | 98.4 | 180.3 | 87.6% | 84.6% | |
| NM91-MY | 196.6 | 176.6 | 159.7 | 153.7 | 129.7 | 183.5 | 91.0% | 87.9% | |
| NM91 | 4.5 | 197.5 | 178.7 | 160.0 | 143.2 | 113.6 | 169.6 | 70.5% | |
| NM91-M | 200.6 | 184.6 | 174.2 | 162.1 | 138.1 | 183.4 | 78.6% | ||
| NM91-MY | 218.5 | 202.7 | 189.0 | 175.8 | 146.1 | 198.8 | 85.8% | ||
图S4 NM91 (a)、NM91-M (b)和NM91-MY (c)在2.7~4.3 V、1C (1C=180 mA•g-1)下第1、50、100、150周的充放电曲线
Fig. S4 Charging/discharging curves at the 1st, 50th, 100th and 150th cycles of NM91 (a), NM91-M (b) and NM91-MY (c) within the voltage range of 2.7-4.3 V at 1C (1C=180 mA•g-1)
| [1] |
WANG S, LIANG K, ZHAO H, et al. Electronic structure formed by Y2O3-doping in lithium position assists improvement of charging-voltage for high-nickel cathodes. Nature Communications, 2025, 16: 1.
DOI |
| [2] |
LIU K, CHANG X, CHEN X, et al. Hierarchical-structural design of ultrathin composite electrolytes for high-stability solid-state lithium batteries: from “polymer-in-salt” to “polymer-in-ceramic”. Nano Energy, 2025, 135: 110644.
DOI URL |
| [3] |
ÇETIN B, CAMTAKAN Z, YUCA N. Synthesis and characterization of li-rich cathode material for lithium ion batteries. Materials Letters, 2020, 273: 127927.
DOI URL |
| [4] | WANG B, ZHANG F L, ZHOU X A, et al. Which of the nickel-rich NCM and NCA is structurally superior as a cathode material for lithium-ion batteries? Journal of Materials Chemistry A, 2021, 9(23): 13540. |
| [5] | CHOI S, FENG W, XIA Y. High entropy and Co-free high nickel based layered LiNi0.9Mn0.1O2 cathode for Li-ion batteries. ACS Applied Energy Materials, 2024, 7(8): 3339. |
| [6] | AISHOVA A, PARK G T, YOON C S, et al. Cobalt-free high- capacity Ni-rich layered Li[Ni0.9Mn0.1]O2 cathode. Advanced Energy Materials, 2020, 10(4): 1903179. |
| [7] | ZHANG S D, QI M Y, GUO S J, et al. Advancing to 4.6 V review and prospect in developing high-energy-density LiCoO2 cathode for lithium-ion batteries. Small Methods, 2022, 6(5): 2200148. |
| [8] |
BI Z, WANG T, CHANG X, et al. Cathode coated by partially cyclized polyacrylonitrile with hybrid conductivity for long-lifespan solid-state garnet batteries. Journal of Colloid and Interface Science, 2025, 700: 138492.
DOI URL |
| [9] | DAI P, KONG X, YANG H, et al. Single-crystal Ni-rich layered LiNi0.9Mn0.1O2 enables superior performance of Co-free cathodes for lithium-ion batteries. ACS Sustainable Chemistry & Engineering, 2022, 10(14): 4381. |
| [10] | DAVID L, MOHANTY D, GENG L, et al. High-voltage performance of Ni-rich NCA cathodes: linking operating voltage with cathode degradation. ChemElectroChem, 2019, 6(22): 5571. |
| [11] | JUNG S K, GWON H, HONG J, et al. Understanding the degradation mechanisms of LiNi0.5Co0.2Mn0.3O2 cathode material in lithium ion batteries. Advanced Energy Materials, 2014, 4(1): 1300787. |
| [12] | YU Y, LIU G, CHEN R, et al. Constructing robust solid electrolyte interphase by coating Li6.4La3Zr1.4Ta0.6O12 on silicon anodes for high-performance lithium-ion batteries. Science China Technological Sciences, 2025, 68(11): 2120101. |
| [13] |
TAGUCHI N, AKITA T, TATSUMI K, et al. Characterization of MgO-coated-LiCoO2 particles by analytical transmission electron microscopy. Journal of Power Sources, 2016, 328: 161.
DOI URL |
| [14] |
GUO X, LI S, DAI S, et al. The intricate roles of Al2O3 on the structure and electrochemical performances of LiNi0.5Co0.2Mn0.3O2 cathode materials. Journal of Alloys and Compounds, 2024, 984: 173931.
DOI URL |
| [15] |
HO V C, JEONG S, YIM T, et al. Crucial role of thioacetamide for ZrO2coating on the fragile surface of Ni-rich layered cathode in lithium ion batteries. Journal of Power Sources, 2020, 450: 227625.
DOI URL |
| [16] | KHOLLARI M A R, AZAR M K, ESMAEILI M, et al. Electrochemical performance and elevated temperature properties of the TiO2-Coated Li[Ni0.8Co0.1Mn0.1]O2 cathode material for high-safety Li-ion batteries. ACS Applied Energy Materials, 2021, 4(5): 5304. |
| [17] |
YANG F, JIA Y M, BAI Z Y, et al. Improvement of electrochemical performance by surface modification of LiNi0.65Co0.15Mn0.2O2 cathode materials with SnO2. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2025, 705: 135719.
DOI URL |
| [18] | SHIM J H, LEE S, PARK S S. Effects of MgO coating on the structural and electrochemical characteristics of LiCoO2 as cathode materials for lithium ion battery. Chemistry of Materials, 2014, 26(8): 2537. |
| [19] |
MWIZERWA J P, LIU C, XU K, et al. Three-dimensional printed lithium iron phosphate coated with magnesium oxide cathode with improved areal capacity and ultralong cycling stability for high performance lithium-ion batteries. Journal of Colloid and Interface Science, 2022, 623: 168.
DOI PMID |
| [20] | MA F, WU Y, WEI G, et al. Enhanced electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via wet-chemical coating of MgO. Journal of Solid State Electrochemistry, 2019, 23(7): 2213. |
| [21] | ALVA G, KIM C, YI T, et al. Surface chemistry consequences of Mg-based coatings on LiNi0.5Mn1.5O4 electrode materials upon operation at high voltage. The Journal of Physical Chemistry C, 2014, 118(20): 10596. |
| [22] | YANG Y, YUAN M, YAN G, et al. The enhanced electrochemical properties of LiNi0.6Co0.2Mn0.2O2 modified with yttrium oxide coating as a cathode material for lithium-ion batteries. International Journal of Electrochemical Science, 2020, 15(5): 4503. |
| [23] |
CAO M, FAN G, MAO Y, et al. Mechanisms for enhancing the properties of LiNi0.5Co0.2Mn0.3O2 by perovskite-type oxides containing lanthanum coating. Journal of Alloys and Compounds, 2025, 1014: 178739.
DOI URL |
| [24] |
DING H, SU Y, WANG X, et al. Enhancing the cycling stability of nickel-rich oxide cathode materials through a multifunctional CeO2 coating. Journal of Colloid and Interface Science, 2025, 687: 118.
DOI URL |
| [25] |
ZHANG M, ZHAO H, TAN M, et al. Yttrium modified Ni-rich LiNi0.8Co0.1Mn0.1O2 with enhanced electrochemical performance as high energy density cathode material at 4.5 V high voltage. Journal of Alloys and Compounds, 2019, 774: 82.
DOI URL |
| [26] | KAN X, CHANG X, LIU K, et al. Implanting non-lithiated metal into fluoride/nitride hybrid matrix enabling tailored lithium/garnet interface chemistry for durable solid-state lithium batteries. Advanced Functional Materials, 2026, 36(1): e12506. |
| [27] |
CHEN Q, LUO L, WANG L, et al. Enhanced electrochemical properties of Y2O3-coated-(lithium-manganese)-rich layered oxides as cathode materials for use in lithium-ion batteries. Journal of Alloys and Compounds, 2018, 735: 1778.
DOI URL |
| [28] | HE R, BAI X, WEI A, et al. Y2O3 modification on nickel-rich LiNi0.8Co0.1Mn0.1O2 with improved electrochemical performance in lithium-ion batteries. Journal of Rare Earths, 2022, 40(2): 309. |
| [29] |
ZHAO R, LIANG J, HUANG J, et al. Improving the Ni-rich LiNi0.5Co0.2Mn0.3O2cathode properties at high operating voltage by double coating layer of Al2O3 and AlPO4. Journal of Alloys and Compounds, 2017, 724: 1109.
DOI URL |
| [30] |
KHOLLARI M A R, AZAR M K, ESMAEILI M, et al. Elevated-temperature behaviour of LiNi0.5Co0.2Mn0.3O2 cathode modified with rGO-SiO2 composite coating. Journal of Alloys and Compounds, 2020, 843: 154924.
DOI URL |
| [31] |
ZHANG Y, LI H, LIU J, et al. Enhancing LiNiO2 cathode materials by concentration-gradient yttrium modification for rechargeable lithium-ion batteries. Journal of Energy Chemistry, 2021, 63: 312.
DOI URL |
| [32] |
LIU Y, TANG L B, WEI H X, et al. Enhancement on structural stability of Ni-rich cathode materials by in-situ fabricating dual-modified layer for lithium-ion batteries. Nano Energy, 2019, 65: 104043.
DOI URL |
| [33] | WANG Y, FAN G X, LIU P, et al. Microscopic mechanism of K+ doping on performance of lithium manganese cathode for Li-ion battery. Journal of Inorganic Materials, 2022, 37(9): 1023. |
| [34] | CHENG J, ZHOU Y, LUO X, et al. Construction and electrochemical properties of yolk-shell structured FeF3·0.33H2O@N- doped graphene nanoboxes. Journal of Inorganic Materials, 2024, 39(3): 299. |
| [35] | 任明明, 刘泽萍, 袁振洛, 等. 掺F影响LiNi0.8Co0.1Mn0.1O2结构和性能的微观机制. 无机化学学报, 2021, 37(6): 1046. |
| [36] | ZHU H, WANG X, HAN K, et al. Enhanced lithium storage stability mechanism of ultra-high nickel LiNi0.91Co0.06Al0.03O2@Ca3(PO4)2 cathode materials. Journal of Inorganic Materials, 2022, 37(9): 1030. |
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