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3D Printed Li–S Batteries with In Situ Decorated Li 2 S/C Cathode: Interface Engineering Induced Loading‐Insensitivity for Scaled Areal Performance
Author(s) -
Xue Lanxin,
Zeng Li,
Kang Wenbin,
Chen Haiyan,
Hu Yin,
Li Yaoyao,
Chen Wei,
Lei Tianyu,
Yan Yichao,
Yang Chengtao,
Hu Anjun,
Wang Xianfu,
Xiong Jie,
Zhang Chuhong
Publication year - 2021
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202100420
Subject(s) - materials science , cathode , electrode , nanotechnology , 3d printed , nanoscopic scale , conductivity , capacitance , energy storage , robustness (evolution) , optoelectronics , composite material , chemical engineering , power (physics) , electrical engineering , chemistry , engineering , medicine , gene , physics , biochemistry , quantum mechanics , biomedical engineering
Holding manifold advantages including environmental benignity, enhanced structural robustness, and high capacity, Li 2 S as a competitive substitute of sulfur in Li–S batteries is receiving escalating attention. However, serious issues rooted in its intrinsic poor conductivity and sluggish mass transport present the significant challenge of achieving high active material use with appealing kinetics for effective scaling in areal capacitance under elevated loading densities. This renders current Li 2 S cathodes incapable of securing energy availability that responds to power‐hungry modern electronics. Here for the first time, an interfacial engineering approach is devised by in situ decorating a 3D printed carbonaceous scaffold with uniform surface‐deposited Li 2 S and by healing the printed adjacent interface to eliminate the interfacial resistance. As a result, facile mass transport throughout the whole printed matrix is enabled. 3D printed electrodes with high active material use and loading‐insensitive performance delivering outstanding areal capacity and fast kinetics of 6.29 mAh cm −2 at 6 mA cm −2 under an impressive loading density of 10 mg cm −2 are realized, which are among the best results reported for Li 2 S‐based batteries. The thrilling performance points to a highly effective approach that advances the performance of Li 2 S cathodes closer toward real‐world applications.