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3D Porous Carbon Sheets with Multidirectional Ion Pathways for Fast and Durable Lithium–Sulfur Batteries
Author(s) -
Li Gaoran,
Lei Wen,
Luo Dan,
Deng YaPing,
Wang Deli,
Chen Zhongwei
Publication year - 2018
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.201702381
Subject(s) - polysulfide , materials science , sulfur , porosity , carbon fibers , electrochemistry , lithium (medication) , nanotechnology , energy storage , faraday efficiency , electrode , ion , chemical engineering , electrolyte , composite material , organic chemistry , chemistry , medicine , composite number , engineering , metallurgy , endocrinology , power (physics) , physics , quantum mechanics
In this work, unique porous carbon sheets (PCSs) are developed via a facile synthesis. The obtained PCS delivers long‐range conductive framework, abundant active interfaces, rich element doping, and notably a high inner porosity that builds up an admirable 3D network for multidirectional ion transfer. Such unique architecture and surface chemistry enable ultrafast sulfur electrochemistry as well as high‐efficiency inhibition on polysulfide shuttling via the dually physical and chemical sulfur confinement. The PCS‐based sulfur electrodes achieve superb rate capability up to 10 C, outstanding cyclability over 1000 cycles, and high areal capacity of 4.8 mA h cm −2 . This work offers an appealing model of material engineering for fast and reliable lithium–sulfur batteries, as well as guidance for rational structural design in extended energy storage and conversion systems.