A freestanding nitrogen-doped MXene/graphene cathode for high-performance Li-S batteries.

Lithium-sulfur batteries (LSBs) take a leading stand in developing next-generation secondary batteries with an exceptionally high theoretical energy density. However, the insulating nature and undesirable shuttle effect still need to be solved to improve the electrochemical performance. Herein, a freestanding graphene supported N-doped TiCT MXene@S cathode is successfully synthesized a straightforward no-slurry method.

Nanofiber-Enhanced "Lucky-Bag" Triboelectric Nanogenerator for Efficient Wave Energy Harvesting by Soft-Contact Structure.

Developing clean and renewable ocean wave energy is a top priority and an effective way to achieve carbon neutrality. Triboelectric nanogenerators (TENGs) have emerged as promising green and clean energy-harvesting devices. To harvest low-frequency wave energy efficiently, much effort has been made on the modification of the contact surface, which leads to a higher fabrication cost.