Unlocking the local structure of hard carbon to grasp sodium-ion diffusion behavior for advanced sodium-ion batteries

Abstract

Clarifying the microstructure of hard carbon is essential to reveal its sodium storage mechanism and to develop hard carbon negative electrodes for high-performance sodium ion batteries. Currently, although various sodium...

Nitrogen-Doped Bioderived Mesoporous Hard Carbon as a Promising Anode for Long-Life Sodium-Ion Battery

“…The study has switched from utilizing graphite as an anode material for SIBs to exploring nongraphitic carbon materials including hard, soft, and amorphous carbons, which have provided the suitable facility of intercalation/deintercalation for sodium ions. This has prompted researchers to investigate nongraphitic carbonaceous materials as prospective substitutes. − …”

Simultaneously enabling superior ICE and high rate/cycling stability with a hollow carbon nanosphere anode for sodium-ion storage

“…19,27 More importantly, it is speculated that the low-potential plateau region demonstrates sluggish kinetics and large volume variation owing to diffusion-limited intercalation and pore filling, giving rise to inferior rate and cycling performance. 24,29,30 For those rarely harvested ICE over 85%, the stability is no more than 500 cycles 24,29,31 and the rate capacity is generally low ( i.e. 83.6 mA h g −1 at 1 A g −1 and 79.5 at 0.5 A g −1 ).…”

Isomers of terephthalate derivatives as anodes for sodium-ion batteries

“…Organic electrode materials (OEMs) have gained recognition as promising candidates for achieving high-performance SIBs. 12–14 Their appeal stems from sustainability, promising electrochemical performance, low cost, natural renewability advantages, and flexible designability. 15,16 Additionally, organic electrode materials typically comprise structurally tunable redox-active groups and light elements (C, H, O), enabling the adjustment of their structures to obtain high-performance electrode materials.…”