Electrochemical characterization of
AlPO4 coated
LiNi1/3Co1/3Mn1/3O2
cathode materials for high temperature lithium battery application

Wang, Jianhua; Wang, Yu; Guo, Yuzhong; Liu, Changwei; Dan, Lu-Lu

doi:10.1007/s12598-014-0247-x

Cited by 31 publications

(10 citation statements)

References 16 publications

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“…Surface modification is an immediate effective strategy to stabilize the interface structure . Numerous materials, such as fluorides (AlF 3 and CaF 2 ), metal oxides (ZrO 2 , TiO 2 , Al 2 O 3 , and Y 2 O 3 ), phosphates [Zn 3 (PO 4 ) 2 and AlPO 4 ], and lithium salts (Li 3 PO 4 , LiAlO 2 , and LiAlSiO 4 ), have been explored as modified materials. Among these compounds, lithium aluminum oxide (LiAlO 2 ) has been extensively investigated owing to its good transport network for Li + and electrochemical inertia .…”

Section: Introductionmentioning

confidence: 99%

Effective and Low-Cost In Situ Surface Engineering Strategy to Enhance the Interface Stability of an Ultrahigh Ni-Rich NCMA Cathode

Guo

Zhu

Qiu

et al. 2022

ACS Appl. Mater. Interfaces

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Ultrahigh Ni-rich quaternary layered oxides LiNi1–x–y–z Co x Mn y Al z O2 (1 – x – y – z ≥ 0.9) are regarded as some of the most promising cathode candidates for lithium-ion batteries (LIBs) because of their high energy density and low cost. However, poor rate capacity and cycling performance severely limit their further commercial applications. Herein, an in situ coating strategy is developed to construct a uniform LiAlO2 layer. The NH4HCO3 solution is added to a NaAlO2 solution to form a weak alkaline condition, which can reduce the hydrolysis rate of NaAlO2, thus enabling uniform deposition of Al(OH)3 on the surface of a Ni0.9Co0.07Mn0.01Al0.02(OH)2 (NCMA) precursor. The LiAlO2-coated samples show enhanced cycling stability and rate capacity. The capacity retention of NCMA increases from 70.7% to 88.3% after 100 cycles at 1 C with an optimized LiAlO2 coating amount of 3 wt %. Moreover, the 3 wt % LiAlO2-coated sample also delivers a better rate capacity of 162 mAh g–1 at 5 C, while that of an uncoated sample is only 144 mAh g–1. Such a large improvement of the electrochemical performance should be attributed to the fact that a uniform LiAlO2 coating relieves harmful interfacial parasitic reactions and stabilizes the interface structure. Therefore, this in situ coating approach is a viable idea for the design of higher-energy-density cathode materials.

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Section: Introductionmentioning

confidence: 99%

Effective and Low-Cost In Situ Surface Engineering Strategy to Enhance the Interface Stability of an Ultrahigh Ni-Rich NCMA Cathode

Guo

Zhu

Qiu

et al. 2022

ACS Appl. Mater. Interfaces

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“…[10,11] It has been demonstrated that stabilizing the surface chemistry through surface coating can effectively prolong the cycling life of Ni-rich layered cathode materials. Many compounds have been used as coating materials, including metal oxides (e. g., ZrO 2 , [12] Al 2 O 3 , [13] MgO [14] ), phosphates (e. g., Li 3 PO 4 , [15] AlPO 4 [16] ), fluorides (e. g., LiF, [17] AlF 3 [18] ), etc. Ideal coating materials can not only act as a stable protective layer during cycling, but also conduct Li + .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical and Structural Stability of Ni‐rich Cathode Material by Lithium Metaborate Coating for Lithium‐Ion Batteries

et al. 2022

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A facile mechanical mixing‐calcination method was employed to coat lithium metaborate onto LiNi0.88Co0.06Mn0.03Al0.03O2 cathode. Physical characterizations revealed that the coating layer was uniformly spread on the surface of the material particles, and did not alter the structure and morphology. Electrochemical measurements indicated that the surface‐modified cathode showed significantly improved cycling stability, both under room‐temperature and high‐temperature (50 °C). The coated sample delivered an initial discharge capacity of 211.0 mAh g−1 at 0.1 C, and a capacity retention of 87.5 % after 300 cycles at 1 C rate under room‐temperature. Meanwhile, it could maintain 97.2 % of initial capacity after 120 cycles at 1 C under 50 °C, which was much higher than the value of the pristine sample (only 37.2 %). The lithium‐ion diffusion kinetics was analyzed by electrochemical impedance spectroscopy. The coated material exhibits lower surface resistance and charge‐transfer resistance, as well as faster lithium‐ion diffusion than the pristine one. The materials were also characterized after cycling. The surface‐modified sample possessed more stable surficial and structural stability.

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“…Among the various cathode materials, layered transition metal oxides LiNi 1−x−y Mn x Co y O 2 (NMC) have attracted wide attention. Compared with LiCoO 2 , LiMn 2 O 4 , and LiNiO 2 , NMC materials have excellent electrochemical properties, such as high energy density, high reversibility, good environmental compatibility, and an excellent charge-discharge rate [5][6][7][8][9][10][11][12][13]. In previous studies, these electrochemical properties of NMC materials have been investigated for different transition metal (TM) ratios, including LiNi 1/3 Mn 1/3 Co 1/3 O 2 (333) [8], LiNi 0.4 Mn 0.4 Co 0.2 O 2 (442) [9], LiNi 0.5 Mn 0.3 Co 0.2 O 2 (532) [10], LiNi 0.6 Mn 0.2 Co 0.2 O 2 (622) [11], LiNi 0.7 Mn 0.15 Co 0.15 O 2 (71515), [12] and LiNi 0.8 Mn 0.1 Co 0.1 O 2 (811) [13].…”

Section: Introductionmentioning

confidence: 99%

“…Compared with LiCoO 2 , LiMn 2 O 4 , and LiNiO 2 , NMC materials have excellent electrochemical properties, such as high energy density, high reversibility, good environmental compatibility, and an excellent charge-discharge rate [5][6][7][8][9][10][11][12][13]. In previous studies, these electrochemical properties of NMC materials have been investigated for different transition metal (TM) ratios, including LiNi 1/3 Mn 1/3 Co 1/3 O 2 (333) [8], LiNi 0.4 Mn 0.4 Co 0.2 O 2 (442) [9], LiNi 0.5 Mn 0.3 Co 0.2 O 2 (532) [10], LiNi 0.6 Mn 0.2 Co 0.2 O 2 (622) [11], LiNi 0.7 Mn 0.15 Co 0.15 O 2 (71515), [12] and LiNi 0.8 Mn 0.1 Co 0.1 O 2 (811) [13]. Among these electrochemical properties, the Li-ion diffusion coefficient, which is an important parameter for LIB cathode materials, directly determines the charge and discharge rate capability [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ni2+ on Lithium-Ion Diffusion in Layered LiNi1−x−yMnxCoyO2 Materials

Yuan-yuan

Huang

et al. 2021

Crystals

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LiNi1−x−yMnxCoyO2 materials are a typical class of layered cathode materials with excellent electrochemical performance in lithium-ion batteries. Molecular dynamics simulations are performed for LiNi1−x−yMnxCoyO2 materials with different transition metal ratios. The Li/Ni exchange ratio, ratio of anti-site Ni2+ to total Ni2+, and diffusion coefficient of Li ions in these materials are calculated. The results show that the Li-ion diffusion coefficient strongly depends on the ratio of anti-site Ni2+ to total Ni2+ because their variation tendencies are similar. In addition, the local coordination structure of the Li/Ni anti-site is analyzed.

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Electrochemical characterization of AlPO4 coated LiNi1/3Co1/3Mn1/3O2 cathode materials for high temperature lithium battery application

Cited by 31 publications

References 16 publications

Effective and Low-Cost In Situ Surface Engineering Strategy to Enhance the Interface Stability of an Ultrahigh Ni-Rich NCMA Cathode

Effective and Low-Cost In Situ Surface Engineering Strategy to Enhance the Interface Stability of an Ultrahigh Ni-Rich NCMA Cathode

Enhanced Electrochemical and Structural Stability of Ni‐rich Cathode Material by Lithium Metaborate Coating for Lithium‐Ion Batteries

Effect of Ni2+ on Lithium-Ion Diffusion in Layered LiNi1−x−yMnxCoyO2 Materials

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