Mechanism study of enhanced electrochemical performance of ZrO2-coated LiCoO2 in high voltage region

Hwang, Bing‐Joe; Chen, C.Y.; Cheng, Ming‐Yao; Santhanam, R.; Ragavendran, K.

doi:10.1016/j.jpowsour.2010.01.040

Cited by 87 publications

(39 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This poor performance may be ascribed to the unwanted interfacial side reaction between the charged LCO and liquid electrolyte. It is known that, at high voltage conditions, conventional carbonate-based liquid electrolytes are vulnerable to electrochemical decomposition on delithiated LCO surface, yielding harmful resistive layers that may hamper charge transfer across LCO surface during cycling891011.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional semi-interpenetrating polymer network-nanoencapsulated cathode materials for high-performance lithium-ion batteries

Kim

Park

Lee

et al. 2014

Sci Rep

View full text Add to dashboard Cite

As a promising power source to boost up advent of next-generation ubiquitous era, high-energy density lithium-ion batteries with reliable electrochemical properties are urgently requested. Development of the advanced lithium ion-batteries, however, is staggering with thorny problems of performance deterioration and safety failures. This formidable challenge is highly concerned with electrochemical/thermal instability at electrode material-liquid electrolyte interface, in addition to structural/chemical deficiency of major cell components. Herein, as a new concept of surface engineering to address the abovementioned interfacial issue, multifunctional conformal nanoencapsulating layer based on semi-interpenetrating polymer network (semi-IPN) is presented. This unusual semi-IPN nanoencapsulating layer is composed of thermally-cured polyimide (PI) and polyvinyl pyrrolidone (PVP) bearing Lewis basic site. Owing to the combined effects of morphological uniqueness and chemical functionality (scavenging hydrofluoric acid that poses as a critical threat to trigger unwanted side reactions), the PI/PVP semi-IPN nanoencapsulated-cathode materials enable significant improvement in electrochemical performance and thermal stability of lithium-ion batteries.

show abstract

Section: Resultsmentioning

confidence: 99%

Multifunctional semi-interpenetrating polymer network-nanoencapsulated cathode materials for high-performance lithium-ion batteries

Kim

Park

Lee

et al. 2014

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Generally speaking, cycling performance deterioration is attributed to (1) electrolyte decomposition, or the structure instability of the LiCoO 2 electrode and (2) the formation of a surface film on the surface of the LiCoO 2 particles which isolates their electronic pathways from the current collector [22]. The LiCoO 2 cathode reacts with a normal electrolyte to form a solid electrolyte interface (SEI) which generally leads to capacity loss decreasing electronic conductivity at about 4.2 V. It might be presumed that the quercetin participates in the electrolyte reaction by the oxidation of phenolic groups during SEI formation, thereby creating a more stable interface microstructure.…”

Section: Resultsmentioning

confidence: 99%

Improvement in safety and cycle life of lithium-ion batteries by employing quercetin as an electrolyte additive

Lee

Yeh

et al. 2012

Journal of Power Sources

View full text Add to dashboard Cite

“…The main role of inorganic coating is preventing electrode reaction with the electrolyte and protecting cathodes from crystal destruction to some extent [79, 80]. Different inorganic materials have different advantages on the surface modifications of LNMO cathodes.…”

Section: Approaches To Improve the Cycling Stability Of Lnmomentioning

confidence: 99%

Research Progress in Improving the Cycling Stability of High-Voltage LiNi0.5Mn1.5O4 Cathode in Lithium-Ion Battery

et al. 2017

View full text Add to dashboard Cite

High-voltage lithium-ion batteries (HVLIBs) are considered as promising devices of energy storage for electric vehicle, hybrid electric vehicle, and other high-power equipment. HVLIBs require their own platform voltages to be higher than 4.5 V on charge. Lithium nickel manganese spinel LiNi0.5Mn1.5O4 (LNMO) cathode is the most promising candidate among the 5 V cathode materials for HVLIBs due to its flat plateau at 4.7 V. However, the degradation of cyclic performance is very serious when LNMO cathode operates over 4.2 V. In this review, we summarize some methods for enhancing the cycling stability of LNMO cathodes in lithium-ion batteries, including doping, cathode surface coating, electrolyte modifying, and other methods. We also discuss the advantages and disadvantages of different methods.

show abstract

Mechanism study of enhanced electrochemical performance of ZrO2-coated LiCoO2 in high voltage region

Cited by 87 publications

References 25 publications

Multifunctional semi-interpenetrating polymer network-nanoencapsulated cathode materials for high-performance lithium-ion batteries

Multifunctional semi-interpenetrating polymer network-nanoencapsulated cathode materials for high-performance lithium-ion batteries

Improvement in safety and cycle life of lithium-ion batteries by employing quercetin as an electrolyte additive

Research Progress in Improving the Cycling Stability of High-Voltage LiNi0.5Mn1.5O4 Cathode in Lithium-Ion Battery

Contact Info

Product

Resources

About