Tsun-Kong Sham

Nov 25, 2024 | nature.com | Weihan Li |Po-Hsiu Chien |Xiaoting Lin |Graham King |Renfei Feng |Jian Wang | +3 more

AbstractThe advancement of all-solid-state lithium metal batteries requires breakthroughs in solid-state electrolytes (SSEs) for the suppression of lithium dendrite growth at high current densities and high capacities (>3 mAh cm−2) and innovation of SSEs in terms of crystal structure, ionic conductivity and rigidness. Here we report a superionic conducting, highly lithium-compatible and air-stable vacancy-rich β-Li3N SSE.

Oct 28, 2024 | nature.com | Xuchun Wang |Xiaodong Li |Tsun-Kong Sham |Panpan Xu |Qiao Zhang

AbstractMetal oxide nanostructures with single-atomic heteroatom incorporation are of interest for many applications. However, a universal and scalable synthesis approach with high heteroatom concentrations represents a formidable challenge, primarily due to the pronounced structural disparities between Mhetero–O and Msub–O units.

Nov 22, 2023 | energypost.eu | Tsun-Kong Sham |Ali Feizabadi

Fuel cells could be a game-changer in decarbonisation. They efficiently convert chemical energy into electricity with only water and heat as byproducts. One of the most promising types is the PEMFC (polymer electrolyte membrane fuel cell) because of its applications in transportation, as well as stationary power sources. But it can’t go mainstream until the costs come down, specifically the platinum catalysts. Platinum is scarce and expensive.

Nov 21, 2023 | nature.com | Tsun-Kong Sham |Xueliang Sun

AbstractMotivated by the high-performance solid-state lithium batteries enabled by lithium superionic conductors, sodium superionic conductor materials have great potential to empower sodium batteries with high energy, low cost, and sustainability. A critical challenge lies in designing and discovering sodium superionic conductors with high ionic conductivities to enable the development of solid-state sodium batteries.

Jun 24, 2023 | nature.com | Feipeng Zhao |Jiatang Chen |Renfei Feng |Mohsen Shakouri |Yang Zhao |Le He | +2 more

AbstractSolid electrolyte is vital to ensure all-solid-state batteries with improved safety, long cyclability, and feasibility at different temperatures. Herein, we report a new family of amorphous solid electrolytes, xLi2O-MCly (M = Ta or Hf, 0.8 ≤ x ≤ 2, y = 5 or 4).