2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane as a bifunctional electrolyte additive for Ni-rich (LiNi0.9Co0.05Mn0.05O2) cathode in Li-ion batteries

Review Chemistry, Applied

Recent progress on electrolyte functional additives for protection of nickel-rich layered oxide cathode materials

Longshan Li et al.

Summary: This review discusses electrolyte functional additives for Ni-rich cathodes and their working mechanisms, which have been shown to improve cycling stability and protect cathode materials.

JOURNAL OF ENERGY CHEMISTRY (2022)

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Article Chemistry, Physical

Dictating the interfacial stability of nickel-rich LiNi0.90Co0.05Mn0.05O2 via a diazacyclo electrolyte additive-2-Fluoropyrazine

Xiaozhen Zhang et al.

Summary: In this study, a diazacyclo type electrolyte additive, 2-fluoropyrazine (2-FP), was used to enhance the interfacial stabilization of lithium nickel cobalt manganese oxide (NCM90) cathode. By adding 0.2% 2-FP into the electrolyte, the capacity retention of NCM90 was significantly improved. This improvement is attributed to the formation of a compact and homogeneous cathode electrolyte interphase (CEI) film on the NCM90 electrode particles.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Electrochemistry

Promoting grain growth in Ni-rich single-crystal cathodes for high-performance lithium-ion batteries through Ce doping

Hoon-Hee Ryu et al.

Summary: By introducing a Ce dopant, a high-performance Ni-rich single-crystal cathode with improved cycling stability and thermal stability was successfully synthesized at a lower calcination temperature. Ce promotes the formation of single-crystal particles and reduces capacity loss during cycling.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2022)

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Article Nanoscience & Nanotechnology

Stable Electrode/Electrolyte Interface for High-Voltage NCM 523 Cathode Constructed by Synergistic Positive and Passive Approaches

Xiaotang Shi et al.

Summary: A new synergistic positive and passive approach is proposed to construct a stable electrode-electrolyte interface at high voltage in lithium-ion batteries, resulting in significantly improved cyclic stability and capacity retention by adding small amounts of Li2S and AN. This study provides new principles guiding high-voltage lithium-ion batteries with excellent electrochemical performance.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Investigating the Compatibility of TTMSP and FEC Electrolyte Additives for LiNi0.5Mn0.3Co0.2O2 (NMC)-Silicon Lithium-Ion Batteries

Anulekha K. Haridas et al.

Summary: This study investigates the compatibility of multi-electrolyte additives for NMC-silicon lithium-ion batteries. The results show that at the optimal TTMSP/FEC ratio, the NMC-Si full-cells achieve a 2x longer cycle life and higher areal capacities with improved capacity retention. Furthermore, a detailed investigation of the electrode-electrolyte interfaces reveals the synergistic effects of electrolyte additives in stabilizing the interfaces and minimizing capacity degradation in NMC-Si full-cells.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Physical

Fluorinated cyclic siloxane additives for high energy density Li-ion batteries with high nickel cathodes and silicon-carbon anodes

Ningbo Xu et al.

Summary: This study proposes a new fluorinated cyclic siloxane additive to enhance the cycling stability of high nickel cathodes and silicon carbon anodes in Li-ion batteries with high energy density, achieving significant capacity retention after cycling and improving the electrochemical stability.

JOURNAL OF POWER SOURCES (2021)

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Article Chemistry, Multidisciplinary

Benzoic Anhydride as a Bifunctional Electrolyte Additive for Hydrogen Fluoride Capture and Robust Film Construction over High-Voltage Li-Ion Batteries

Sen Jiang et al.

Summary: Benzoic anhydride (BA) was proposed as a promising bifunctional electrolyte additive that can enhance the performance and stability of high-voltage LiNi0.8Co0.1Mn0.1O2 (NCM811)-based Li-ion batteries. Experimental results and theoretical calculations showed that BA could effectively protect the cathode and suppress the decomposition of the electrolyte, leading to improved capacity retention.

CHEMSUSCHEM (2021)

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Article Multidisciplinary Sciences

Transition metal-doped Ni-rich layered cathode materials for durable Li-ion batteries

H. Hohyun Sun et al.

Summary: This study investigates the effect of transition metal dopants on the properties of Ni-rich cathode active materials and finds that dopants with high oxidation states significantly improve the cycling stability and performance of Li-ion batteries. Physicochemical measurements reveal substantial differences in grain geometries and crystal lattice structures of various cathode materials, which correlate with the oxidation states of their dopants.

NATURE COMMUNICATIONS (2021)

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Article Chemistry, Multidisciplinary

Stabilizing the LiCoO2 Interface at High Voltage with an Electrolyte Additive 2,4,6-Tris(4-fluorophenyl)boroxin

Yue Zou et al.

Summary: A novel electrolyte additive TFPB is proposed to enhance the interfacial stability of LCO, leading to substantially improved capacity retention of the cathode and reduced parasitic side reactions.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Chemistry, Physical

Enhanced Interfacial Stability of a LiNi0.9Co0.05Mn0.05O2 Cathode by a Diboron Additive

Yue Zou et al.

Summary: In this study, a diboron electrolyte additive TBDB was introduced to enhance the structural and interfacial stability of Ni-rich cathode, leading to improved long-term cycle life and rate capability of the cathode.

ACS APPLIED ENERGY MATERIALS (2021)

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Article Chemistry, Physical

Revealing the degradation mechanism of Ni-rich cathode materials after ambient storage and related regeneration method

Congjie Lv et al.

Summary: Ni-rich layered oxide cathodes show high capacity and low cost, but are sensitive to exposure to air, leading to impurity layer formation and performance deterioration. Studying degradation mechanisms and employing regeneration methods can help enhance their electrochemical performance for practical industrial applications of LIBs.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Chemistry, Physical