In situ growth of MOF-derived nitrogen-doped carbon nanotubes on hollow MXene spheres for K-ion storage

Abstract

Two‑dimensional (2D) MXenes are potential as electrode materials for energy storage, owing to their unique structural properties and excellent electrochemical properties. Unfortunately, MXene nanosheets easily stack due to van der...

Advanced Insights on MXenes: Categories, Properties, Synthesis, and Applications in Alkali Metal Ion Batteries

“…Electrochemical performance of MXenes and their composites in (a) LIBs (refs , , , , , , , , − ), (b) SIBs (refs , , , , , , − , , , , − ), and (c) PIBs (refs , , − , − , , , ) based on the research from the past three years.…”

“…Consequently, ultrahigh rate performance (155.5 mAh g –1 @ 20 A g –1 ) and long-span life with high capacity retention (1000 cycles at 10 A g –1 , 83.3%) have been achieved by enhanced ion/electron diffusion capability. Microbial transformed MXene@N-doped carbonaceous nanofiber with open pores and diffusion channels, MOF-derived N-doped CNTs on hollow MXene spheres, and carbon quantum dot-derived spheres packaged within Ti 3 C 2 well inhibited the layer stacking and presented long cycling life over 1000 cycles in PIB anodes. − …”

Construction of WS2/NC@C nanoflake composites as performance-enhanced anodes for sodium-ion batteries

“…4–7 However, the rising demand and limited lithium resources have led to the rise in the cost of LIBs, and their high cost will hinder their application. 8,9 To resolve this issue, sodium-ion batteries (SIBs) are emerging as prospective alternatives for LIBs on account of their lower cost and analogous storage mechanism to LIBs. 10–12 Nevertheless, the larger radius of Na + compared to Li + , resulting in poor specific capacity and sluggish electrochemical reaction kinetics of SIBs, means that many anodes for SIBs do not match those of LIBs.…”