(Pentafluorophenyl)diphenylphosphine as a dual-functional electrolyte additive for LiNi0.5Mn1.5O4 cathodes in high-voltage lithium-ion batteries

Bolloju, Satish; Chiou, Chun-Yu; Vikramaditya, Talapunur; Lee, Jyh-Tsung

doi:10.1016/j.electacta.2019.01.037

Cited by 47 publications

(24 citation statements)

References 45 publications

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“…Furthermore, with the development of new energy vehicles, the market demand for high energy density capacitors has also increased accordingly. Thus, supercapacitors have attracted a lot of attention due to their higher energy and power density as compared with traditional capacitors and batteries and are also well-known as electrochemical capacitors (Bolloju et al, 2019 ). Supercapacitors are classified into two types, pseudocapacitors and electric double-layer capacitors (EDLC), according to the energy storage mechanism.…”

Section: Introductionmentioning

confidence: 99%

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

et al. 2020

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Bi 2 WO 6 /CNO (CNO, carbon nano-onion) composites are synthesized via a facile low-cost hydrothermal method and are used pseudocapacitor electrode material. X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 adsorption-desorption techniques, and X-ray photoelectron spectroscopy (XPS) measurements are used to characterize the synthesized composite powders. The electrochemical performances of the composite electrodes are studied by cycle voltammetry, charge-discharge, and electrochemical impedance spectroscopy. The results indicate that the specific capacitance of the Bi 2 WO 6 /CNO composite materials reaches up to 640.2 F/g at a current density of 3 mA/cm 2 and higher than that of pristine Bi 2 WO 6 , 359.1 F/g. The capability of the prepared pseudocapacitor remains 90.15% after 1,000 cycles of charge-discharge cycling measurement. The cell performance and stability can be enhanced by further optimization and modification of the composition and microstructure of the electrode of the cell.

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Section: Introductionmentioning

confidence: 99%

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

et al. 2020

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“…al, which effectively suppresses the decomposition of LiPF 6 to detrimental products (LiF, PO 2 F 2 À ) and thus is contributed to stabilize the CEI film. [102] Moreover, the addition of PEPDPP also can play an important role in constraining the batteries from self-discharge. Liu et al studied lithium difluorophosphate (LiDFP) as film-froming additive for LIBs employing LNMO.…”

Section: Spinel Tm Oxidesmentioning

confidence: 99%

Regulation of Cathode‐Electrolyte Interphase via Electrolyte Additives in Lithium Ion Batteries

Wang

et al. 2020

Chemistry An Asian Journal

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As the power supply of the prosperous new energy products, advanced lithium ion batteries (LIBs) are widely applied to portable energy equipment and large‐scale energy storage systems. To broaden the applicable range, considerable endeavours have been devoted towards improving the energy and power density of LIBs. However, the side reaction caused by the close contact between the electrode (particularly the cathode) and the electrolyte leads to capacity decay and structural degradation, which is a tricky problem to be solved. In order to overcome this obstacle, the researchers focused their attention on electrolyte additives. By adding additives to the electrolyte, the construction of a stable cathode‐electrolyte interphase (CEI) between the cathode and the electrolyte has been proven to competently elevate the overall electrochemical performance of LIBs. However, how to choose electrolyte additives that match different cathode systems ideally to achieve stable CEI layer construction and high‐performance LIBs is still in the stage of repeated experiments and exploration. This article specifically introduces the working mechanism of diverse electrolyte additives for forming a stable CEI layer and summarizes the latest research progress in the application of electrolyte additives for LIBs with diverse cathode materials. Finally, we tentatively set forth recommendations on the screening and customization of ideal additives required for the construction of robust CEI layer in LIBs. We believe this minireview will have a certain reference value for the design and construction of stable CEI layer to realize desirable performance of LIBs.

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“…Besides the structural failure, the aggressive electrochemical degradation at the electrode–electrolyte interface is another challenge issue, which results in the electrolyte decomposition and passivation of the solid electrode as well as the corrosion/the dissolution of the cathode in the electrolytes. [ 12,13 ] In particular, the residual moisture in electrolyte reacts with LiPF 6 to generate HF and Li x PO y F z , which can be expressed as shown in Equation (1) [ 14 ]

{LiPF}_{6} + n H_{2} O + n {Li}^{+} \to {Li}_{x} {PO}_{y} F_{z} + n HF + LiF

…”

Section: Introductionmentioning

confidence: 99%

Armoring LiNi_1/3Co_1/3Mn_1/3O₂ Cathode with Reliable Fluorinated Organic–Inorganic Hybrid Interphase Layer toward Durable High Rate Battery

Chen

Zhao

Zhang

et al. 2020

Adv Funct Materials

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Ternary layered oxide materials have attracted extensive attention as a pro mising cathode candidate for high-energy-density lithium-ion batteries. However, the undesirable electrochemical degradation at the electrode-electrolyte interface definitively shortens the battery service life. An effective and viable approach is proposed for improving the cycling stability of the LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathode using lithium difluorophosphate (LiPO 2 F 2 ) paired with fuoroethylene carbonate (FEC) as co-additives into conventional electrolytes. It is found that the co-additives can greatly reduce the interface charge transfer impedance and significantly extend the life span of LiNi 1/3 Co 1/3 Mn 1/3 O 2 //Li (NMC//Li) batteries. The developed cathode demonstrates exceptional capacity retention of 88.7% and remains structural integrity at a high current of 5C after 500 cycles. Fundamental mechanism study indicates a dense, stable fluorinated organic-inorganic hybrid cathode-electrolyte interphase (CEI) film derived from LiPO 2 F 2 in conjunction with FEC additives on the surface of NMC cathode material, which significantly suppresses the decomposition of electrolyte and mitigates the dissolution of transition metal ions. The interfacial engineering of the electrode materials stabilized by the additives manipulation provides valuable guidance for the development of advanced cathode materials.

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(Pentafluorophenyl)diphenylphosphine as a dual-functional electrolyte additive for LiNi0.5Mn1.5O4 cathodes in high-voltage lithium-ion batteries

Cited by 47 publications

References 45 publications

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

Regulation of Cathode‐Electrolyte Interphase via Electrolyte Additives in Lithium Ion Batteries

Armoring LiNi_1/3Co_1/3Mn_1/3O₂ Cathode with Reliable Fluorinated Organic–Inorganic Hybrid Interphase Layer toward Durable High Rate Battery

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(Pentafluorophenyl)diphenylphosphine as a dual-functional electrolyte additive for LiNi0.5Mn1.5O4 cathodes in high-voltage lithium-ion batteries

Cited by 47 publications

References 45 publications

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

High Electrochemical Performance of Bi2WO6/Carbon Nano-Onion Composites as Electrode Materials for Pseudocapacitors

Regulation of Cathode‐Electrolyte Interphase via Electrolyte Additives in Lithium Ion Batteries

Armoring LiNi1/3Co1/3Mn1/3O2 Cathode with Reliable Fluorinated Organic–Inorganic Hybrid Interphase Layer toward Durable High Rate Battery

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Armoring LiNi_1/3Co_1/3Mn_1/3O₂ Cathode with Reliable Fluorinated Organic–Inorganic Hybrid Interphase Layer toward Durable High Rate Battery