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An Aligned and Laminated Nanostructured Carbon Hybrid Cathode for High‐Performance Lithium–Sulfur Batteries
Author(s) -
Sun Qian,
Fang Xin,
Weng Wei,
Deng Jue,
Chen Peining,
Ren Jing,
Guan Guozhen,
Wang Min,
Peng Huisheng
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201504514
Subject(s) - polysulfide , cathode , sulfur , materials science , lithium–sulfur battery , carbon fibers , mesoporous material , electrochemistry , battery (electricity) , lithium (medication) , carbon nanotube , chemical engineering , nanotechnology , electrode , composite material , chemistry , composite number , organic chemistry , catalysis , metallurgy , electrolyte , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
An aligned and laminated sulfur‐absorbed mesoporous carbon/carbon nanotube (CNT) hybrid cathode has been developed for lithium–sulfur batteries with high performance. The mesoporous carbon acts as sulfur host and suppresses the diffusion of polysulfide, while the CNT network anchors the sulfur‐absorbed mesoporous carbon particles, providing pathways for rapid electron transport, alleviating polysulfide migration and enabling a high flexibility. The resulting lithium–sulfur battery delivers a high capacity of 1226 mAh g −1 and achieves a capacity retention of 75 % after 100 cycles at 0.1 C. Moreover, a high capacity of nearly 900 mAh g −1 is obtained for 20 mg cm −2 , which is the highest sulfur load to the best of our knowledge. More importantly, the aligned and laminated hybrid cathode endows the battery with high flexibility and its electrochemical performances are well maintained under bending and after being folded for 500 times.