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In‐Situ Fabrication of Bone‐Like CoSe 2 Nano‐Thorn Loaded on Porous Carbon Cloth as a Flexible Electrode for Na‐Ion Storage
Author(s) -
Guo Huinan,
Liu Guishu,
Wang Mengying,
Zhang Yan,
Li Weiqin,
Chen Kai,
Liu Yafei,
Yue Mengyuan,
Wang Yijing
Publication year - 2020
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.202000189
Subject(s) - materials science , electrode , carbonization , selenide , carbon fibers , fabrication , porosity , nanotechnology , chemical engineering , energy storage , conductivity , composite material , chemistry , metallurgy , scanning electron microscope , medicine , power (physics) , alternative medicine , physics , selenium , pathology , quantum mechanics , composite number , engineering
Sodium‐ion batteries (SIBs) based on flexible electrode materials are being investigated recently for improving sluggish kinetics and developing energy density. Transition metal selenides present excellent conductivity and high capacity; nevertheless, their low conductivity and serious volume expansion raise challenging issues of inferior lifespan and capacity fading. Herein, an in‐situ construction method through carbonization and selenide synergistic effect is skillfully designed to synthesize a flexible electrode of bone‐like CoSe 2 nano‐thorn coated on porous carbon cloth. The designed flexible CoSe 2 electrode with stable structural feature displays enhanced Na‐ion storage capabilities with good rate performance and outstanding cycling stability. As expected, the designed SIBs with flexible BL−CoSe 2 /PCC electrode display excellent reversible capacity with 360.7 mAh g −1 after 180 cycles at a current density of 0.1 A g −1 .