Premium
Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles
Author(s) -
Kim SeongJun,
Ahn Minchul,
Park Jungjin,
Jeoun Yunseo,
Yu SeungHo,
Min DalHee,
Sung YungEun
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001022
Subject(s) - polysulfide , sulfur , materials science , mesoporous material , electrochemistry , lithium–sulfur battery , chemical engineering , carbon fibers , porosity , chemistry , electrode , composite material , composite number , organic chemistry , catalysis , metallurgy , electrolyte , engineering
Abstract Hierarchical mesoporous carbon was studied as a key material for enhancing sulfur utilization in Li−S batteries. Commonly, thermal sulfur infiltration into mesoporous carbon was a representative method for S−C composites; however, these had some problems such as pore blocking or nonuniform deposition of sulfur. Electrochemical sulfur impregnation without chemical or thermal infiltration reduced the preprocess time and enabled efficient polysulfide diffusion into the carbon pores. As the soluble polysulfides are smaller and more mobile than solid‐state sulfur, they could be physically or chemically adsorbed into the pores of the carbon additives. This approach enhanced the cycle stability and rate performance of the batteries. This study will provide an efficient and economic use of porous carbons in the Li−S battery field.