Dually modified cathode-electrolyte interphases layers by calcium phosphate on the surface of nickel-rich layered oxide cathode for lithium-ion batteries

Song, Hye Ji; Oh, Seong Ho; Lee, Yongho; Kim, Jeong‐Han; Yim, Taeeun

doi:10.1016/j.jpowsour.2020.229218

Cited by 20 publications

(10 citation statements)

References 53 publications

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“…Efforts have been made to address the flammability concerns regarding the usage of a liquid electrolyte by discovering other safe alternatives to anions, such as phosphates, borates, imides and Hückel-type salts [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ]. Incorporating hydrophilic lithium bis(trifluoromethanesulfonyl)imide, LiTFSI, into the electrolyte system is another strategy as it acts as a co-salt [ 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid@Metal-Organic Framework as a Solid Electrolyte in a Lithium-Ion Battery: Current Performance and Perspective at Molecular Level

et al. 2022

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Searching for a suitable electrolyte in a lithium-ion battery is a challenging task. The electrolyte must not only be chemically and mechanically stable, but also be able to transport lithium ions efficiently. Ionic liquid incorporated into a metal–organic framework (IL@MOF) has currently emerged as an interesting class of hybrid material that could offer excellent electrochemical properties. However, the understanding of the mechanism and factors that govern its fast ionic conduction is crucial as well. In this review, the characteristics and potential use of IL@MOF as an electrolyte in a lithium-ion battery are highlighted. The importance of computational methods is emphasized as a comprehensive tool to investigate the atomistic behavior of IL@MOF and its interaction in electrochemical environments.

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Section: Introductionmentioning

confidence: 99%

Ionic Liquid@Metal-Organic Framework as a Solid Electrolyte in a Lithium-Ion Battery: Current Performance and Perspective at Molecular Level

et al. 2022

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“…The physical protection coating materials such as Al 2 O 3 [ 79 ], CeO 2 [ 80 ], ZrO 2 [ 81 ], TiO 2 [ 82 ], SiO 2 [ 83 ], CaO [ 84 ], ZnO [ 85 ], Y 2 O 3 [ 86 ], etc, have been commonly used to isolate the contact between the cathode electrode and the electrolyte, effectively preventing HF corrosion and heightening the electrochemical characteristics of the cathode materials. Metal fluorides (LiF [ 87 ], AlF 3 [ 88 ], etc) and phosphates (AlPO 4 [ 89 ], FePO 4 [ 90 ], Zn 3 (PO 4 ) 2 [ 91 ], etc) are also used for coating the surface of the cathode materials because of their stable physicochemical properties.…”

Section: Modificationsmentioning

confidence: 99%

“…However, these substances have poor ionic conductivity and electronic conductivity, which will add to the interface impedance of the material and decrease the dynamic performance of the battery. Therefore, conductive polymers with outstanding ionic conductivity and/or electronic conductivity (PANI-PEG [ 92 ], PEDOT [ 93 ], PPy [ 94 ], PAN [ 95 ], etc) and fast-ion conductors with good ionic conductivity (Li 2 SnO 3 [ 96 ], Li 3 PO 4 [ 84 , 97 , 98 ], Li 4 Ti 5 O 12 [ 99 ], LiTa 2 PO 8 [ 100 ], etc) have been gradually applied to coat Ni-rich cathode materials; these modified materials have shown excellent electrochemical properties.…”

Section: Modificationsmentioning

confidence: 99%

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Challenges and Modification Strategies of Ni-Rich Cathode Materials Operating at High-Voltage

Liao

Liu

2022

Nanomaterials

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Ni-rich cathode materials have become promising candidates for lithium-based automotive batteries due to the obvious advantage of electrochemical performance. Increasing the operating voltage is an effective means to obtain a higher specific capacity, which also helps to achieve the goal of high energy density (capacity × voltage) of power lithium-ion batteries (LIBs). However, under high operating voltage, surface degradation will occur between Ni-rich cathode materials and the electrolytes, forming a solid interface film with high resistance, releasing O2, CO2 and other gases. Ni-rich cathode materials have serious cation mixing, resulting in an adverse phase transition. In addition, the high working voltage will cause microcracks, leading to contact failure and repeated surface reactions. In order to solve the above problems, researchers have proposed many modification methods to deal with the decline of electrochemical performance for Ni-rich cathode materials under high voltage such as element doping, surface coating, single-crystal fabrication, structural design and multifunctional electrolyte additives. This review mainly introduces the challenges and modification strategies for Ni-rich cathode materials under high voltage operation. The future application and development trend of Ni-rich cathode materials for high specific energy LIBs are projected.

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“…In particular, the rapid development of cathode materials with high energy density, structure and cycle stability has become a major factor hindering comprehensive green energy technologies. [1][2][3][4][5] Prospective cathode that governs the LIBs performance, newly proposed family of nickel-rich layered oxide (NLO) cathode material; LiNi x Co y Mg z O 2 (LNCMg) has gained the largest consideration for engineering applications. [6][7][8] In the series of LNCMg cathodes, recent research work has been specifically focused on Nickel-rich (Ni � 90 %) LNCMg cathodes to stabilize these structures.…”

Section: Introductionmentioning

confidence: 99%

Effect of Magnesium Doping on Voltage Decay of Nickel‐Rich Cathode Materials

et al. 2021

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Structural degradation is the main challenge of Nickel-rich cathodes, leading to capacity and voltage fading, especially at high cut-off voltages. Herein, LiNi 0.94-x Co 0.06 Mg x O 2 (x = 0, 0.01, 0.02) samples have been prepared by high-temperature solidstate reaction method. The effects of Mg doping on its crystalline structure, and electrochemical performance have been studied by various characterizations analysis. We notice that Mg doping can not only tighten the structure/interface stability of the cathode, but also accelerates the Li + diffusion, thereby significantly achieving its high voltage/cycle stability. High-voltage (4.5 V) electrochemical results show that Mgdoped LiNi 0.94 Co 0.06 O 2 (1 % Mg) can achieve a high reversible capacity of 217.5 mAh g À 1 at 0.2 C, high cycle retention rate of 80.5 % after 100 cycles at 0.2 C, inhibits average voltage decay, suppress resistance rise and boosted rate performance. Our work provides a solid strategy for improving the structure and voltage decay of nickel-rich cathode materials for future highenergy lithium-ion batteries.

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Dually modified cathode-electrolyte interphases layers by calcium phosphate on the surface of nickel-rich layered oxide cathode for lithium-ion batteries

Cited by 20 publications

References 53 publications

Ionic Liquid@Metal-Organic Framework as a Solid Electrolyte in a Lithium-Ion Battery: Current Performance and Perspective at Molecular Level

Ionic Liquid@Metal-Organic Framework as a Solid Electrolyte in a Lithium-Ion Battery: Current Performance and Perspective at Molecular Level

Challenges and Modification Strategies of Ni-Rich Cathode Materials Operating at High-Voltage

Effect of Magnesium Doping on Voltage Decay of Nickel‐Rich Cathode Materials

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