Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Abstract

In this article, a novel anode material with high electrochemical performance, made of elements abundant on the Earth, is reported for use in lithium ion batteries. A chemically synthesised material (SiO 2 /ZrO 2 ) containing Si-O-Zr bonds, exhibits as much as 2.1 times better electrochemical performance at the 10 th cycle than a physically mixed material (SiO 2 +ZrO 2 ) of the same elements. When compared to synthesized SiO 2 or conventional graphite-based electrodes, the SiO 2 /ZrO 2 anode shows superiorcapability and cycling performance. This superior performance is ascribed to the effect of ternary compounds, which contributes not only to increasing the packing density, but also to creating the Si-O-Zr bond that makes additional reactions between SiO 2 /ZrO 2 and lithium ions possible. The Si-OZr bond also contributes to improved conductivity for SSZ and provides facile paths for charge transfer at the electrode/electrolyte interface. Therefore, the overall internal resistance in a battery would be decreased and better performance could thus be obtained, with this type of anode. In every result, the positive influence of the Si-O-Zr bonds in the anode of a lithium ion battery was confirmed.

Facile fabrication of ZrO 2 @PMMA@polysiloxane nanohybrids and their application for light diffusing films

“…Two bands at 745 and 540 cm −1 are attributed to Zr-O bonds in monoclinic and tetragonal zirconia, which is in accordance with the available literature [16]. Importantly, the curve also shows an obvious peak of Si-O-Zr at 965 cm −1 , which may be caused by the hydrolysation of silane at the surface of ZrO 2 nanoparticles [17]. The XRD pattern of the ZrO 2 @PMMA@polysiloxane nanohybrids is displayed in Fig.…”

Insulator Layer Engineering toward Stable Si Photoanode for Efficient Water Oxidation

“…It is known that silicide has excellent thermal stability and good conductivity. The silicide has been verified to enhance the electrochemical performance in lithium-ion batteries by improving conductivity and providing facile paths for charge transfer at the electrode/electrolyte interface . The formed silicide layer could be employed as another protection layer to prevent the Si diffusion.…”

Characteristics and local structure of hafnia-silicate-zirconate ceramic nanomixtures

“…The positions and assignments of the most important absorption bands shown in the FT-IR spectra are discussed. The assignments were made based on data from the literature concerning some vitreous or crystalline compounds related to the system investigated in this work (Lee & Condrate, 1988;Choi & Choy, 2016;Vitanov et al, 2014;Ortiz et al, 2005;Khomenkova et al, 2014;Najafinezhad et al, 2017;Ferdov et al, 2012).…”