Alkali metal anodes have been regarded as the ideal candidate for the next generation high-energy electrode couples due to their ultrahigh specific capacity and the lowest redox potential. However, their...

The practical application of Na–S batteries is largely hindered by their low mass loading, inferior rate capability, and poor cycling performance. Herein, we report a design strategy for encapsulation of sodium polysulfides using Ti3C2T x MXene. Porous nitrogen-doped Ti3C2T x MXene microspheres have been synthesized by a facile synthesis method. Porous nitrogen-doped Ti3C2T x MXene microspheres contain abundant pore structures and heteroatom functional groups for structural and chemical synergistic encapsulation of sodium polysulfides. Sodium–sulfur batteries, based on the as-proposed cathode, demonstrated outstanding electrochemical performances, including a high reversible capacity (980 mAh g–1 at 0.5 C rate) and extended cycling stability (450.1 mAh g–1 at 2 C after 1000 cycles at a high areal sulfur loading of 5.5 mg cm–2). This MXene-based hybrid material is a promising cathode host material for polysulfide-retention, enabling high-performance Na–S batteries.

Capacitive deionization (CDI) technology is an effective seawater desalination technology due to its high cycle efficiency and good reversibility property, which has been extensively focused. As one of the core...

The integrated battery system, which integrates solar power and rechargeable battery in the same unit, is an effective solution for the shortage and inefficiency of power energy. We initially present...

Growing global energy demand and environmental damage are driving the pursuit of sustainable energy and storage technologies. Rechargeable batteries, as one of the attractive energy storage technologies integrating renewable resources,...