Hui Wu

TL;DR: It is shown that anodes consisting of an active silicon nanotube surrounded by an ion-permeable silicon oxide shell can cycle over 6,000 times in half cells while retaining more than 85% of their initial capacity.

TL;DR: In this article, the authors outline three fundamental materials challenges associated with large volume change, and then show how nanostructured materials design can successfully address these challenges, which can also be extended to other battery materials that undergo large volume changes.

TL;DR: High capacity, long cycle life, high efficiency, and high Coulombic efficiency have been realized in this yolk-shell structured Si electrode.

TL;DR: A novel interconnected Si hollow nanosphere electrode that is capable of accommodating large volume changes without pulverization during cycling is reported that achieves the high initial discharge capacity of 2725 mAh g(-1) with less than 8% capacity degradation every hundred cycles for 700 total cycles.

TL;DR: Infiltration of a conducting polymer hydrogel into Si-based anodes results in a well-connected three-dimensional network structure consisting of Si nanoparticles conformally coated by the conducting polymer, demonstrating a cycle life of 5,000 cycles with over 90% capacity retention at current density.