Understanding the effects of a multi-functionalized additive on the cathode–electrolyte interfacial stability of Ni-rich materials

Yim, Taeeun; Kang, Kyoung Seok; Mun, Junyoung; Lim, Sang Hoo; Woo, Sang‐Gil; Kim, Ki Jae; Park, Min; Cho, Woosuk; Song, Jun; Han, Young‐Kyu; Yu, Ji‐Sang; Kim, Young‐Jun

doi:10.1016/j.jpowsour.2015.10.051

Cited by 86 publications

(37 citation statements)

References 69 publications

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“…Additionally, it was shown by T. Yim et al 46 that divinyl sulfone can be a very effective electrolyte additive to stabilize the interface between Ni-rich NMC positive electrodes and electrolyte, hence improving the cycle life of Ni-rich NMC based cells. Similar effects of 1,3-propane sulfone as an electrolyte additive were also found by K. S. Kang et al 47 for Ni-rich NMC materials.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

Liu

Xia

et al. 2017

J. Electrochem. Soc.

172

158

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Many literature reports show that layered Li-Ni-Mn-Co oxides (NMC) have a surface reconstruction to a rocksalt (Fm3m) structure which is claimed to be responsible for the increase in cell impedance during high voltage cycling. It is important to determine if appropriate electrolyte additives can suppress the surface reconstructions of NMC materials. LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811)/Graphite pouch cells with different electrolyte additives and different upper cutoff potentials were charge-discharge cycled and the electrodes were recovered for z-contrast scanning transmission electron microscope (STEM) studies. It was found that there was no significant surface layer growth for cells cycled between 2.8 and 4.1 V. For cells with an upper cutoff voltage of 4.3 V, the electrodes from cells with control electrolyte (no additives) showed the thickest surface layer. The electrolyte additives vinylene carbonate (VC) and prop-1-ene-1,3-sultone (PES) were found to suppress the growth of the surface layer. However, cells with PES showed a more rapid capacity fade than control cells or cells with 2% VC showing that, at least for NMC811/graphite cells with PES or VC additives, failure cannot only be solely ascribed to a growing rocksalt surface layer. Other processes, for example associated with electrolyte oxidation, are believed to be responsible for failure. High energy density lithium-ion batteries that are cheaper, safer and with longer lifetimes need to be developed in order to meet the increasing demand for applications such as electric vehicles. LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) can deliver a high capacity of ∼200 mAh/g with an average discharge voltage of ∼3.8 V (vs. Li+/Li), making it a promising positive electrode material for high energy density lithium-ion batteries.1 However, electrochemical tests of NMC811 from half cells and full cells show poor cycling performance when charged to voltages above 4.2 V.2 In-situ and ex-situ X-ray diffraction showed that there are no significant irreversible structural changes in the bulk of the material during charge-discharge cycling. Instead, the parasitic reactions between the electrolyte and the surface of the positive electrode particles at high voltages were suggested to be the cause of the failure of cells cycled above 4.2 V. 2Layered NMC materials have a hexagonal layered structure (α-NaFeO 2 -type structure described in the Rm space group), where Li and transition metal atoms form alternating layers between oxygen layers and Li atoms have a 2-D diffusion path. [3][4][5] Lin et al. 6 showed that the surface of LiNi 0.42 Mn 0.42 Co 0.16 O 2 (NMC442) went through a structural reconstruction from layered (Rm) to rocksalt (Fm3m). In that transition, transition metal ions migrated to the lithium layers with a possible loss of Li and O from the surface of the structure. This was cited as one of the causes of a significant increase in cell impedance under high voltage cycling conditions. This surface reconstruction phenomenon was also observed in many other reports abou...

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Section: Resultsmentioning

confidence: 99%

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

Liu

Xia

et al. 2017

J. Electrochem. Soc.

172

158

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“…It has been found that HF would accelerate the transition metal ions dissolution from LNCM811, resulting in electrode structural destruction and severe capacity fading [12,13,[18][19][20] . Application of electrolyte film-forming additive can create a protective (or cathode electrolyte interface, CEI) film on the high voltage cathode surface and improve the interfacial stability [12,13,[18][19][20][21][22] http://engine.scichina.com/doi/10.1016/j.jechem.2019.04.011…”

Section: Introductionmentioning

confidence: 99%

Insight into the interaction between Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode and BF4−-introducing electrolyte at 4.5 V high voltage

Lan

Zhou

Xing

et al. 2019

Journal of Energy Chemistry

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“…Electrolyte additives consisting of sulfur ( e.g ., prop‐1‐ene‐1,3‐ sulton (PES) and methylene methane disulfonate (MMDS), divinyl sulfone (DVS)), [ 182‐185 ] phosphorus ( e.g ., tris(trimethylsilyl)phosphite (TMSP or TTSPi)), [ 182‐184,186 ] nitrogen ( e.g ., succinonitrile (SN)) [ 186 ] and boron ( e.g ., trimethoxyboroxine (TMOBX), tris‐(trimethylsilyl)borate (TMSB)) [ 187‐190 ] functional groups used in combination have been reported. Figure 17 systematically investigated and compared the effects of electrolyte additives singly or in combination on LiNi 1/3 Mn 1/3 Co 1/3 O 2 (NMC111)/graphite pouch cells in terms of charge transfer resistance, charge slippage, coulombic efficiency and gas produced in formation (represented by “figure of merits”).…”

Section: Modification Methodsmentioning

confidence: 99%

High‐Voltage Layered Ternary Oxide Cathode Materials: Failure Mechanisms and Modification Methods^†

et al. 2020

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Due to the large reversible capacity, high operating voltage and low cost, layered ternary oxide cathode materials LiNixCoyAl1−x−yO2 (NCA) and LiNixCoyMn1−x−yO2 (NCM) are considered as the most potential candidate materials for lithium-ion batteries (LIBs) used in (hybrid) electric vehicles (EVs). However, next-generation long-range EVs require a high specific capacity (around 203 mAh•g-1 at 3.7V) at the cathode active material level, which is not provided with current commercially layered ternary oxide cathodes. Increasing the operating voltage is an effective method to improve the specific capacity of the cathode and the energy density of the battery, but the high operating voltage also causes a lot of problems, such as cation mixing and phase transformation, electrolyte decomposition, transition metal dissolution and microcracks. So far, researchers have carried out a lot of works to solve these issues. Surface coating, element doping and the design of electrolytes have been proved to be effective solutions. In this review, the failure mechanisms and modification methods of high-voltage layered ternary oxide cathode materials are summarized, which could provide valuable information to the research of high-voltage layered ternary oxide cathode materials in basic science and industrial production. Xiaodan Wang (top left) was born in Hebei province, China in 1996. She received her bachelor degree from Hebei University of Technology in 2018. She is currently studying for her master's degree under the guidance of Professor Bai in School of Materials Science at Beijing Institute of Technology. Ying Bai (top right) is currently a professor at Beijing Institute of Technology (BIT). Her research interests focus on electrochemical energy storage and conversion technology. Dr. Bai earned her bachelor degree from Applied Chemistry Division at Harbin Institute of Technology, China (HIT) in 1997. She completed her Ph.D. from School of Chemical Engineering & Materials Science at BIT in 2003. In 2013, she was awarded New Century Excellent Talents in University from the Chinese Ministry of Education. She hosted and is hosting the projects of the National Natural Science Foundation of China as a principal investigator. Dr. Bai has authored/co-authored more than 120 peer-reviewed articles and filed more than 40 Chinese patents. Xinran Wang (bottom left) is an associate researcher at Beijing Institute of Technology (BIT). His research interests focus on new system for high energy density secondary batteries. In 2016, he received his Ph.D. degree in University of Chinese Academy of Sciences. From 2013 to 2015, he was jointly trained by Georgia Institute of Technology in the United States. From 2016 to 2018, he worked as an assistant researcher at the Institute of Process Engineering, Chinese Academy of Sciences. He has won the Baosteel Award, the President's Award of the Chinese Academy of Sciences, the Chinese Academy of Sciences Outstanding pacesetter and so on. Chuan Wu (bottom right) is a professor at Beijing Institute of Tech...

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Understanding the effects of a multi-functionalized additive on the cathode–electrolyte interfacial stability of Ni-rich materials

Cited by 86 publications

References 69 publications

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

Insight into the interaction between Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode and BF4−-introducing electrolyte at 4.5 V high voltage

High‐Voltage Layered Ternary Oxide Cathode Materials: Failure Mechanisms and Modification Methods^†

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Understanding the effects of a multi-functionalized additive on the cathode–electrolyte interfacial stability of Ni-rich materials

Cited by 86 publications

References 69 publications

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi0.8Mn0.1Co0.1O2Electrodes

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi0.8Mn0.1Co0.1O2Electrodes

Insight into the interaction between Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode and BF4−-introducing electrolyte at 4.5 V high voltage

High‐Voltage Layered Ternary Oxide Cathode Materials: Failure Mechanisms and Modification Methods†

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The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

The Impact of Electrolyte Additives and Upper Cut-off Voltage on the Formation of a Rocksalt Surface Layer in LiNi_0.8Mn_0.1Co_0.1O₂Electrodes

Insight into the interaction between Ni-rich LiNi0.8Co0.1Mn0.1O2 cathode and BF4−-introducing electrolyte at 4.5 V high voltage

High‐Voltage Layered Ternary Oxide Cathode Materials: Failure Mechanisms and Modification Methods^†