An AlCl₃ coordinating interlayer spacing in microcrystalline graphite facilitates ultra-stable and high-performance sodium storage

Abstract

Metal chloride-intercalated graphite intercalation compounds (MC-GICs) show perfect sandwich structure with high electronic conductivity and chemical stability, but there are few applications for MC-GICs in anode materiasl of sodium ion...

High-sulfur-doped hard carbon for sodium-ion battery anodes with large capacity and high initial coulombic efficiency

“…6g). 25 Interestingly, D Na+ gradually increases from 9.57 × 10 −13 cm 2 s −1 for the initial cycle to 4.50 × 10 −12 cm 2 s −1 for the 100 th cycle. This is believed to be concerned with the electrochemical activation of the electrode, which is the in-depth reason for the capacity increase during the cycling process.…”

Research progress of organic liquid electrolyte for sodium ion battery

“…FEC as an additive promotes the production of NaF, which enhances the NEDC-rich SEI and results in a significant increase in capacity retention during cycling. Graphite-based materials have good reversible capacity and good cycling performance in NaPF 6 /diethylene glycol dimethyl ether (DEGDME) electrolytes ( Han et al, 2015 ; Cabello et al, 2017 ; Nacimiento et al, 2019 ; Li Z. et al, 2021 ; Zheng et al, 2022 ). Transformation-based electrode materials (e.g., copper phosphorothioate (Cu 3 PS 4 ) ( Brehm et al, 2020 ), dandelion-shaped manganese sulfide (DS-MnS) ( Duong Tung et al, 2018 ), tin phosphide (Sn 4 P 3 /C) electrodes ( Luis Gomez-Camer et al, 2019 ), TiS 2 ( Tao et al, 2018 ), etc. )…”

FeSe2 Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries

“…However, conventional composite treatment mainly involves ion transfer at the interface between carbon materials and FeSe 2 , while the transfer from the internal regions of FeSe 2 to the surface of carbon materials has a comparatively slower rate. Multiple materials, including FeCl 3 , MoCl 5 , and AlCl 3 , are introduced into the graphite layer to form a graphite intercalation compound (GIC), − which facilitates intimate layer-to-layer contact and increases the rate of ion transfer. Nevertheless, there is currently no existing literature on the synthesis of GICs using FeSe 2 as a precursor.…”