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Porous Metal–Organic Frameworks Containing Reversible Disulfide Linkages as Cathode Materials for Lithium‐Ion Batteries
Author(s) -
Shimizu Takeshi,
Wang Heng,
Matsumura Daiju,
Mitsuhara Kei,
Ohta Toshiaki,
Yoshikawa Hirofumi
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201903471
Subject(s) - electrolyte , moiety , porosity , battery (electricity) , cathode , redox , lithium (medication) , chemical engineering , materials science , metal organic framework , metal ions in aqueous solution , metal , porous medium , chemistry , inorganic chemistry , nanotechnology , electrode , organic chemistry , adsorption , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Three porous disulfide‐ligand‐containing metal–organic frameworks (DS‐MOFs) and two nonporous coordination polymers with disulfide ligands (DS‐CPs) with various structural dimensionalities were used as cathode active materials in lithium batteries. Charge/discharge performance examinations revealed that only porous DS‐MOF‐based batteries exhibited significant capacities close to the theoretical values, which was ascribed to the insertion of electrolyte ions into the DS‐MOFs. The insolubility of porous 3 D DS‐MOFs in the electrolyte resulted in cycling performances superior to that of their 1 D and 2 D porous counterparts. Battery reactions were probed by instrumental analyses. The dual redox reactions of metal ions and disulfide ligands in the MOFs resulted in higher capacities, and the presence of reversible electrochemically dynamic S−S bonds stabilized the cycling performance. Thus, the strategy of S−S moiety trapping in MOFs and the obtained correlation between the structural features and battery performance could contribute to the design of high‐performance MOF‐based batteries and the practical realization of Li‐S batteries.