Study on the cycling performance of LiNi_0.5Mn_1.5O₄ electrodes modified by reactive SiO₂ nanoparticles

Abstract

The composite polymer electrolyte layer formed by reactive SiO2 nanoparticles on the LiNi0.5Mn1.5O4 material provided good cycling characteristics.

Quasi-Solid-State Hybrid Electrolytes for Electrochemical Hydrogen Gas Sensor

“…4(a) showed symmetrical stretching vibration of siloxane (Si-O-Si) at 766 cm -1 and asymmetrical stretching vibrations at 1190 and 1082 cm -1 . The spectrum also exhibited a small peak at 1636 cm -1 , which is a characteristic peak of C=C double bond in the methacrylate group on the surface of MA-SiO 2 particles [24,25], indicating the MA-SiO 2 particles have reactive groups to permit free-radical reaction. Fig.…”

MoO3 Nanoparticle Coatings on High-Voltage 5 V LiNi0.5Mn1.5O4 Cathode Materials for Improving Lithium-Ion Battery Performance

“…In attempts to remove the detrimental HF molecules produced in the electrolyte and prevent direct contact of the electrolyte with the active material surface, researchers have coated the cathode surface with oxide materials that are chemically inert in the electrolyte. Numerous oxide-based coating materials have been investigated for LNMO surface modification, including Al 2 O 3 [17], SiO 2 [18], V 2 O 5 [19], CuO [20], ZnO [21], ZrO 2 [22], and RuO 2 [23] etc. However, the majority of these materials are electrochemically inactive, i.e., some capacity of the cell is sacrificed when LNMO is coated with the aforementioned oxide materials.…”

Molecular gate effects observed in fluoroalkylsilane self-assembled monolayers grafted on LiNi0.5Mn1.5O4cathodes: an application to efficient ion-exchange reactions

“…This method was currently accepted to provide fundamentally different innovative functions utilizable in battery reactions. 22 An additional strategy consists of protecting the LNMO surface from the electrolyte by the deposition of a protective coating made of oxides such as SiO 2 , 23 27 and Li 3 BO 3, 28 on LNMO. The formation of a thick coating layer has enabled the achievement of enhanced cyclability at the expense of the energy density and power density of the electrodes, however these layers resulted in degradation in their kinetical parameter in the ion exchange reaction at the electrolyte interface owing to their functioning as insulating layers to counteract the decrease in direct contact area with electrolytes.…”