An effective approach to improve the electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathode by an MOF-derived coating

Li, Siwu; Fu, Xiaotao; Zhou, Junwen; Han, Young‐Kyu; Qi, Pengfei; Gao, Xing; Feng, Xiao; Wang, Bo

doi:10.1039/c5ta10773c

Cited by 94 publications

(41 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is reported that Li-rich materials are composed of two phases of Li 2 MnO 3 (C 2/m ) and LiMO 2 (R m 3 ) (M = Ni, Co, Mn, etc.). [17][18][19] From this viewpoint, metal fluorides (FeF 3 , [20] MOF, [21,22] AlF 3 , [23,24] etc. [9][10][11][12][13] In this regard, multifarious modification approaches, such as doping and surface coating, have been intensively investigated.…”

mentioning

confidence: 99%

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

et al. 2019

View full text Add to dashboard Cite

HEVs (PHEVs), besides the traditional applications in portable devices. To build the next generation LIBs with higher performances, high energy density materials are urgently pursued worldwide. [1][2][3] Lithium-rich (Li-rich) materials, with the specific capacity over 260 mAh g −1 and energy density up to ≈1000 Wh kg −1 , [4] have attracted great interest in the past decades. It is reported that Li-rich materials are composed of two phases of Li 2 MnO 3 (C 2/m ) and LiMO 2 (R m 3 ) (M = Ni, Co, Mn, etc.). [5][6][7][8][9] Despite the above advantages, several concerns including structural instability and the resulted voltage degradation, as well as the poor diffusion kinetics at the interface have become the bottlenecks of Li-rich materials. [9][10][11][12][13] In this regard, multifarious modification approaches, such as doping and surface coating, have been intensively investigated. [14][15][16] Particularly, Li + diffusion at the cathode-electrolyte interphase (CEI) is widely regarded as the rate determining step in LIBs. [17][18][19] From this viewpoint, metal fluorides (FeF 3 , [20] MOF, [21,22] AlF 3 , [23,24] etc.), metal oxides (MgO, [25] Al 2 O 3 , [26,27] etc.), metal phosphates (AlPO 4 , [28] LaPO 4 , [29] Li 3 PO 4 , [30] FePO 4 /Li 3 PO 4 , [31] Li-Mn-PO 4 , [32] etc.), and those with similar structure of Li-rich Li 2 MnO 3 (Li 2 SiO 3 [33,34] and Li 2 SnO 3 , [35] ) have been widely applied to modify the surface of bulk Li-rich materials. Recently, fast lithium-ion conductors (LiVO 3 , [36] Li 2 ZrO 3 , [37] Li-La-Ti-O, [38,39] LiPON, [40] etc.) have also been proposed to decorate the surface of Li-rich cathodes to enhance the apparent diffusion coefficients. All the aforesaid surface modification materials, unexceptionally, have been proved to be effective in both stabilizing the structure and facilitating the Li + kinetics. Nevertheless, in general, the decoration layers themselves seem rather "passive" in promoting Li + diffusion. Assuming they are Li + conductive (e.g., solid electrolyte materials), fast Li + diffusion channels will be provided besides the general separation effect (in suppressing side reactions and inevitable TM dissolution). As for Li + insulators (e.g., metal fluorides), only the benefit of physical barriers could be exploited. Therefore, a more "initiative" function interface is imperative to be built to more effectively promote the Li + transport at the electrode-electrolyte interphase.It is noteworthy that piezoelectric material, as an important category in the energy-conversion community, works on the As one of the most promising cathodes for next-generation lithium ion batteries (LIBs), Li-rich materials have been extensively investigated for their high energy densities. However, the practical application of Li-rich cathodes is extremely retarded by the sluggish electrode-electrolyte interface kinetics and structure instability. In this context, piezoelectric LiTaO 3 is employed to functionalize the surface of Li 1.2 Ni 0.17 Mn 0.56 Co 0.07 O 2 (LNMCO), aiming to boost t...

show abstract

mentioning

confidence: 99%

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

et al. 2019

View full text Add to dashboard Cite

show abstract

“…[11][12][13][14][15][16][17][18][19] As research continues to combat voltage fade, interest in the lithium-stoichiometric, manganese-bearing, nickel-rich layered oxides (Li 1+x Ni a Co b Mn c O 2 , x typically <0.05) has been rekindled. [20][21][22][23][24][25][26] Oxides, such as LiNi 0. 5 In this article we focus our attention on the NCM523 oxide which has been the subject of several recent articles.…”

mentioning

confidence: 99%

Cycling Behavior of NCM523/Graphite Lithium-Ion Cells in the 3–4.4 V Range: Diagnostic Studies of Full Cells and Harvested Electrodes

Gilbert

Bareño

Spila

et al. 2016

J. Electrochem. Soc.

164

180

View full text Add to dashboard Cite

Energy density of full cells containing layered-oxide positive electrodes can be increased by raising the upper cutoff voltage above the present 4.2 V limit. In this article we examine aging behavior of cells, containing LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523)-based positive and graphite-based negative electrodes, which underwent up to ∼400 cycles in the 3-4.4 V range. Electrochemistry results from electrodes harvested from the cycled cells were obtained to identify causes of cell performance loss; these results were complemented with data from X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectroscopy (SIMS) measurements. Our experiments indicate that the full cell capacity fade increases linearly with cycle number and results from irreversible lithium loss in the negative electrode solid electrolyte interphase (SEI) layer. The accompanying electrode potential shift reduces utilization of active material in both electrodes and causes the positive electrode to cycle at higher states-of-charge. Full cell impedance rise on aging arises primarily at the positive electrode and results mainly from changes at the electrode-electrolyte interface; the small growth in negative electrode impedance reflects changes in the SEI layer. Our results indicate that cell performance loss could be mitigated by modifying the electrode-electrolyte interfaces through use of appropriate electrode coatings and/or electrolyte additives. The pursuit of high energy density lithium-ion batteries for transportation applications continues in order to increase the driving range of vehicles on a single charge. Because graphite (Gr) remains the active material of choice in the negative electrode, the search mainly revolves around layered oxides for the positive electrode. In recent years there has been immense interest in the lithium and manganese-rich layered oxides which are capable of delivering high energy density cells. [1][2][3][4][5][6][7][8][9][10] This interest has ebbed somewhat because the voltage fade exhibited by these oxides lowers the usable energy, and complicates state-ofcharge determination, of the battery cells. In this article we focus our attention on the NCM523 oxide which has been the subject of several recent articles. For example, Bak et al. conducted in situ X-ray diffraction studies on various (delithiated) Li x Ni a Co b Mn c O 2 materials and concluded that NCM523 is an optimized composition offering the thermal stability of lower-Ni oxides (such as NCM333) while displaying capacities closer to the higher-Ni oxides (such as NCM811).27 From AC impedance and DC polarization studies Amin and Chiang reported that the electronic conductivity of NCM523 increases with decreasing Li-content, from 10 −7 S/cm for a fully-lithiated oxide (Li 1.0 ) to 10 −2 S/cm for a significantly delithiated (Li 0.25 ) oxide.28 Dixit et al. confirmed from first * Electrochemical Society Member. z E-mail: abraham@anl.gov principle-based simulation studies that during oxide delithiation Ni oxidizes first, followed by Co, while Mn rem...

show abstract

“…At the same time, they also prepared Al 2 O 3 coated NCM622 and found that a layered structure of LiAlO 2 coating was formed, which decreased the contact area between the active material and electrolyte and reduced the interfacial resistance between the cathode and the electrolyte [34]. Li et al [35] reported an effective surface modification for NCM622 that an Al-based MOF (NH 2 -MIL-53) was used as a precursor to produce MOF-derived alumina (MDA) coatings. The MDA layer showed well-dispersion and the amorphous nature and could not block the pathways of Li + ions.…”

mentioning

confidence: 99%

Progress in Preparation and Modification of LiNi_0.6Mn_0.2Co_0.2O₂ Cathode Material for High Energy Density Li-Ion Batteries

Zhou

et al. 2018

International Journal of Electrochemistry

View full text Add to dashboard Cite

Due to the advantages of high specific capacity, various temperatures, and low cost, layered LiNi0.6Co0.2Mn0.2O2 has become one of the potential cathode materials for lithium-ion battery. However, its application was limited by the high cation mixing degree and poor electric conductivity. In this paper, the influences of synthesis methods and modification such surface coating and doping materials on the electrochemical properties such as capacity, cycle stability, rate capability, and impedance of LiNi0.6Co0.2Mn0.2O2 cathode materials are reviewed and discussed. The confronting issues of LiNi0.6Co0.2Mn0.2O2 cathode materials have been pointed out, and the future development of its application is also prospected.

show abstract

An effective approach to improve the electrochemical performance of LiNi_0.6Co_0.2Mn_0.2O₂ cathode by an MOF-derived coating

Abstract: We report an effective surface modification for NCM-622, using MOF-derived alumina (MDA) coatings. The coated NCM-622 shows greatly enhanced performance: 214.6 and 196.5 mA h g−1 at 0.2C and 1C, respectively, with capacity retention of 92.7% after 100 cycles at 1C.

Cited by 94 publications

References 46 publications

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

Cycling Behavior of NCM523/Graphite Lithium-Ion Cells in the 3–4.4 V Range: Diagnostic Studies of Full Cells and Harvested Electrodes

Progress in Preparation and Modification of LiNi_0.6Mn_0.2Co_0.2O₂ Cathode Material for High Energy Density Li-Ion Batteries

Contact Info

Product

Resources

About

An effective approach to improve the electrochemical performance of LiNi0.6Co0.2Mn0.2O2 cathode by an MOF-derived coating

Abstract: We report an effective surface modification for NCM-622, using MOF-derived alumina (MDA) coatings. The coated NCM-622 shows greatly enhanced performance: 214.6 and 196.5 mA h g−1 at 0.2C and 1C, respectively, with capacity retention of 92.7% after 100 cycles at 1C.

Cited by 94 publications

References 46 publications

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO3 Modified Li‐Rich Cathode–Electrolyte Interphase

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO3 Modified Li‐Rich Cathode–Electrolyte Interphase

Cycling Behavior of NCM523/Graphite Lithium-Ion Cells in the 3–4.4 V Range: Diagnostic Studies of Full Cells and Harvested Electrodes

Progress in Preparation and Modification of LiNi0.6Mn0.2Co0.2O2 Cathode Material for High Energy Density Li-Ion Batteries

Contact Info

Product

Resources

About

An effective approach to improve the electrochemical performance of LiNi_0.6Co_0.2Mn_0.2O₂ cathode by an MOF-derived coating

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

Local Electric‐Field‐Driven Fast Li Diffusion Kinetics at the Piezoelectric LiTaO₃ Modified Li‐Rich Cathode–Electrolyte Interphase

Progress in Preparation and Modification of LiNi_0.6Mn_0.2Co_0.2O₂ Cathode Material for High Energy Density Li-Ion Batteries