Self-assembled GeO/TiCT Composites as Promising Anode Materials for Lithium Ion Batteries.

High-capacity germanium-based anode materials are alternative materials for outstanding electrochemical performance lithium-ion batteries (LIBs), but severe volume variation and pulverization problems during charging-discharging processes can seriously affect their electrochemical performance. In addressing this challenge, a simple strategy was used to prepare the self-assembled GeO/TiCT composite in which the GeO nanoparticles can grow directly on TiCT layers. Nanoscale GeO uniformly renucleates on the surface and interlayers of TiCT, forming the stable multiphase structure, which guarantees its excellent electrochemical performance.

Ultrahigh-Rate Behavior Anode Materials of MoSe Nanosheets Anchored on Dual-Heteroatoms Functionalized Graphene for Sodium-Ion Batteries.

MoSe is a prospective anode material for Na-ion batteries because of its layered structure and high theoretical capacity, while the unsatisfied electrochemical performance limits its further development. Herein, we report MoSe nanosheets anchored on dual-heteroatoms functionalized graphene by a solvothermal method. The heteroatoms and carbon matrix coexist in the form of graphitic-N/pyridinic-N/pyrrolic-N and P-C/P═O bonds, which result in excellent electronic conductivity of the materials and provide abundant active sites for electrochemical process.

Multiple Linkage Modification of Lithium-Rich Layered Oxide LiMnNiCoO for Lithium Ion Battery.

A multiple linkage modification (MLM) method was investigated to comprehensively improve the properties of lithium-rich layered oxides. MLM LiMnNiCoO was successfully synthesized via continuous and appropriate heat treatment. The synthesized LiMnNiCoO particles were coated with a LiZrO layer and doped with Zr by using a Zr compound as the MLM reagent.