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Few‐Layered SnS 2 on Few‐Layered Reduced Graphene Oxide as Na‐Ion Battery Anode with Ultralong Cycle Life and Superior Rate Capability
Author(s) -
Zhang Yandong,
Zhu Peiyi,
Huang Liliang,
Xie Jian,
Zhang Shichao,
Cao Gaoshao,
Zhao Xinbing
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201402833
Subject(s) - anode , materials science , graphene , oxide , battery (electricity) , ion , chemical engineering , nanotechnology , current density , optoelectronics , electrode , metallurgy , power (physics) , chemistry , physics , quantum mechanics , engineering
Na‐ion Batteries have been considered as promising alternatives to Li‐ion batteries due to the natural abundance of sodium resources. Searching for high‐performance anode materials currently becomes a hot topic and also a great challenge for developing Na‐ion batteries. In this work, a novel hybrid anode is synthesized consisting of ultrafine, few‐layered SnS 2 anchored on few‐layered reduced graphene oxide (rGO) by a facile solvothermal route. The SnS 2 /rGO hybrid exhibits a high capacity, ultralong cycle life, and superior rate capability. The hybrid can deliver a high charge capacity of 649 mAh g −1 at 100 mA g −1 . At 800 mA g −1 (1.8 C), it can yield an initial charge capacity of 469 mAh g −1 , which can be maintained at 89% and 61%, respectively, after 400 and 1000 cycles. The hybrid can also sustain a current density up to 12.8 A g −1 (≈28 C) where the charge process can be completed in only 1.3 min while still delivering a charge capacity of 337 mAh g −1 . The fast and stable Na‐storage ability of SnS 2 /rGO makes it a promising anode for Na‐ion batteries.