Synergistic Engineering of Electronic Structure and Interfacial Field via a 3D Heterostructure for Stable Sodium Metal Batteries.

Uneven distribution of electric field and sodium ion on the sodium metal anode surface is identified as the key factor triggering dendrite growth, which severely compromises the energy density and cycle life of batteries. Herein, a sodiophilic heterostructure with SnP nanoparticles encapsulated in N/P codoped graphene-like nanotubes (SnP/NPGTs) is synthesized through the integration of chemical vapor deposition and in situ phosphorization. Rich active sites constructed by N/P codoping modulate the local electronic structure effectively, facilitating uniform Na distribution and adsorption while reducing the nucleation overpotential.

Incorporation of Fe/FeO Nanoparticles into Interlinked -Doped Porous Carbon Nanofiber Networks to Realizing Sequential Catalytic Conversion of Lithium-Sulfur Batteries.

Lithium-sulfur (Li-S) batteries (LSBs) with energy density (2600 Wh/kg) much higher than typical Li-ion batteries (150-300 Wh/kg) have received considerable attention. However, the insulation nature of solid sulfur species and the high activation barrier of lithium polysulfides (LiPSs) lead to slow sulfur redox kinetics. By the introduction of catalytic materials, the effective adsorption of LiPSs, and significantly reduced conversion, energy barriers are expected to be achieved, thereby sharpening electrochemical reaction kinetics and fundamentally addressing these challenges.

Boosting the Efficiency and Stability of Li-CO Batteries via a Ruthenium-Based Olefin-Metathesis Catalyst.

The practical application of Li-CO batteries is significantly hindered by high charge potential and short lifespan, mainly due to sluggish reaction kinetics and inadequate reaction reversibility. Homogeneous catalysts added to the electrolyte provide a promising strategy to address these issues. In this work, the third-generation Grubbs catalyst (G-III), which is efficient for olefin metathesis reactions, has been adopted as a homogeneous catalyst for Li-CO batteries.