Improved electrochemical performances of LiNi0.8Co0.1Mn0.1O2 cathode via SiO2 coating

Lee, Seung Hwan; Park, Gumjae; Sim, Seoung-Ju; Jin, Bong‐Soo; Kim, Hyunsoo

doi:10.1016/j.jallcom.2019.03.308

Cited by 103 publications

(62 citation statements)

References 35 publications

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“…We can confirm that all curves are smoother without polarization, and gradually decreasing discharge voltage from 4.5 to 3.0 V without any additional plateau. It means that B introduction did not influence the electrochemical behaviour of NCM 3 . There are no obvious differences in discharge capacities for all samples.…”

Section: Resultsmentioning

confidence: 95%

“…Recently, lithium-ion batteries (LIBs) are most commonly used in electric vehicles (EVs) and hybrid electric vehicles (HEVs) and portable devices due to superior energy density although they have suffered from inferior cycle life and rate capability. In order to overcome these shortcomings, there have been many attempts for safe and high-rate LIBs 1–3 . However, much more research efforts are still needed for next-generation LIBs.…”

Section: Introductionmentioning

confidence: 99%

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Superior Performances of B-doped LiNi0.84Co0.10Mn0.06O2 cathode for advanced LIBs

Lee

Jin

Kim

2019

Sci Rep

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Boron-doped Ni-rich LiNi0.84Co0.10Mn0.06O2 (B-NCM) cathode material is prepared and its electrochemical performances are investigated. The structural properties indicate that the incorporation of boron leads to highly-ordered layered structure and low cation disordering. All samples have high areal loadings of active materials (approximately 14.6 mg/cm2) that meets the requirement for commercialization. Among them, the 1.0 wt% boron-doped NCM (1.0B-NCM) shows the best electrochemical performances. The 1.0B-NCM delivers a discharge capacity of 205. 3 mAh g−1, cyclability of 93.1% after 50 cycles at 0.5 C and rate capability of 87.5% at 2 C. As a result, we can conclude that the 1.0B-NCM cathode can be regarded as a promising candidate for the next-generation lithium ion batteries.

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Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Superior Performances of B-doped LiNi0.84Co0.10Mn0.06O2 cathode for advanced LIBs

Lee

Jin

Kim

2019

Sci Rep

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“…And some coating materials can remove the species which can cause deteriorating effect like transition metal dissolution. Many previous studies have reported surface coating in wet process with materials like ZrO 2 , SiO 2 , Li 2 TiO 3 , Li 3 PO 4 , and AlF 3 [12][13][14][15][16]. Typically, surface coating in wet process involves a solution and heating process through which the cathode particle cannot be completely surrounded with coating material, thus exposing some areas to attack by non-aqueous electrolyte species [17].…”

Section: Introductionmentioning

confidence: 99%

Improving Electrochemical Performance of Ni-rich Cathode Using Atomic Layer Deposition with Particle by Particle Coating Method

Kim

Park

et al. 2021

J. Electrochem. Sci. Technol

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Atomic layer deposition (ALD) enhances the stability of cathode materials via surface modification. Previous studies have demonstrated that an Ni-rich cathode, such as LiNi. Improved cyclability may be a result of the ALD coating, which physically protects the electrode by modifying the interface, and prevents degradation by resisting side reactions that result in capacity decay. The electrochemical impedance spectra and structural and morphological analysis performed using electron microscopy and X-ray techniques establish the surface enhancement resulting from the aforementioned strategy.

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“…The semicircle at high frequency is related to resistance of solid electrolyte interface (R SEI ) and the semicircle in the middle frequency represents the charge transfer resistance (R ct ) at the interface between the electrode and electrolyte. The straight line with the slope of 45° at low frequencies, corresponding to the Warburg impedance, is related to Li + diffusion in the bulk electrode 43 . We can observe that V-doped NCM exhibited lower R SEI and R ct than those of pristine NCM, as shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Improving the electrochemical performances using a V-doped Ni-rich NCM cathode

Sim

Lee

Jin

et al. 2019

Sci Rep

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Ni-rich layered LiNi 0.84 Co 0.10 Mn 0.06 O 2 cathode material was modified by doping with vanadium to enhance the electrochemical performances. The XRD, FESEM and XPS analyses were indicated that the vanadium is successfully doped in the crystal lattice of LiNi 0.84 Co 0.10 Mn 0.06 O 2 with high crystallinity. 0.05 mol% vanadium doped LiNi 0.84 Co 0.10 Mn 0.06 O 2 exhibits superior initial discharge capacity of 204.4 mAh g −1 , cycling retention of 88.1% after 80 cycles and rate capability of 86.2% at 2 C compared to those of pristine sample. It can be inferred that the vanadium doping can stabilize the crystal structure and improve the lithium-ion kinetics of the layered cathode materials.

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Improved electrochemical performances of LiNi0.8Co0.1Mn0.1O2 cathode via SiO2 coating

Cited by 103 publications

References 35 publications

Superior Performances of B-doped LiNi0.84Co0.10Mn0.06O2 cathode for advanced LIBs

Superior Performances of B-doped LiNi0.84Co0.10Mn0.06O2 cathode for advanced LIBs

Improving Electrochemical Performance of Ni-rich Cathode Using Atomic Layer Deposition with Particle by Particle Coating Method

Improving the electrochemical performances using a V-doped Ni-rich NCM cathode

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