Scalable Synthesis of SiO-TiON Composite As an Ultrastable Anode for Li-Ion Half/Full Batteries.

Among various anode materials, SiO is regarded as the next generation of promising anode due to its advantages of high theoretical capacity with 2680 mA h g, low lithium voltage platform, and rich natural resources. However, the pure SiO-based materials have slow lithium storage kinetics attributed to their low electron/ion conductive properties and the large volume change during lithiation/delithiation, restricting their practical application. Optimizing the SiO material structures and the fabricating methods to mitigate these fatal defects and adapt to the market demand for energy density is critical.

Regulating Grafting Density to Realize High-Areal-Capacity Silicon Submicroparticle Anodes Under Ultralow Binder Content.

Grafted biopolymer binders are demonstrated to improve the processability and cycling stability of the silicon (Si) nanoparticle anodes. However, there is little systematical exploration regarding the relationship between grafting density and performance of grafted binder for Si anodes, especially when Si particles exceed the critical breaking size. Herein, a series of guar gum grafted polyacrylamide (GP) binders with different grafting densities are designed and prepared to determine the optimal grafting density for maximizing the electrochemical performance of Si submicroparticle (SiSMP) anodes.

Three-Dimensional Crosslinked PAA-TA Hybrid Binders for Long-Cycle-Life SiO Anodes in Lithium-Ion Batteries.

The large volume expansion hinders the commercial application of silicon oxide (SiO) anodes in lithium-ion batteries. Recent studies show that binders play a vital role in mitigating the volume change of SiO electrodes. Herein, we introduce the small molecule tannic acid (TA) with high branching into the linear poly(acrylic acid) (PAA) binder for SiO anodes.

Engineering High-Performance SiO Anode Materials with a Titanium Oxynitride Coating for Lithium-Ion Batteries.

Micron-sized silicon oxide (SiO) has been regarded as a promising anode material for new-generation lithium-ion batteries due to its high capacity and low cost. However, the distinct volume expansion during the repeated (de)lithiation process and poor conductivity can lead to structural collapse of the electrode and capacity fading. In this study, SiO anode materials coated with TiON layers are fabricated by a facile solvothermal and thermal reduction technique.