Topological transformation construction of a CoSe₂/N-doped carbon heterojunction with a three-dimensional porous structure for high-performance sodium-ion half/full batteries

Abstract

Transition metal selenides have been widely used as anode materials for sodium-ion batteries (SIBs) because of their considerable theoretical capacity and good conductivity. Nevertheless, the volume expansion is a serious...

Improved electrode kinetics of a modified Na3V2(PO4)3 cathode through Zr substitution and nitrogen-doped carbon coating towards robust electrochemical performance at low temperature

“…2k, the NC coating layer can be clearly detected, providing robust protection for the NVP particles and high electronic conductivity. 29,60–62 Note that the lattice spacing with a distance of 0.374 nm can be ascribed to the (113) plane of the rhombohedral structure, combined with its selected area electron diffraction (SAED) pattern shown in the inset in Fig. 2l, which reveals the highly crystalline feature of the NVP.…”

Electrode/electrolyte additives for practical sodium-ion batteries: a mini review

“…With the increasing pressure owing to the geopolitical and ethical concerns about lithium resources, batteries other than LIBs, such as sodium-ion batteries (SIBs), potassium-ion batteries (KIBs), zinc-ion batteries (ZIBs), magnesium-ion batteries (MIB), aluminum-ion batteries (AIBs) and so on, have attracted considerable attention in the recent past. [27][28][29][30][31][32][33][34] Among these batteries, SIBs stand out owing to the similar "rocking-chair" charging and discharging mechanisms compared with LIBs and the abundance and low cost of sodium. 35,36 In addition, the standard electrode poten-a tial of Na/Na + (−2.71 V vs. SHE) is similar to that of Li/Li + (−3.04 V vs. SHE), which results in similar voltage windows.…”