In-Situ Fabrication of Bone-Like CoSe2 Nano-Thorn Loaded on Porous Carbon Cloth as a Flexible Electrode for Na-Ion Storage.,Chemistry - An Asian Journal

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In-Situ Fabrication of Bone-Like CoSe2 Nano-Thorn Loaded on Porous Carbon Cloth as a Flexible Electrode for Na-Ion Storage.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-04-07 , DOI: 10.1002/asia.202000189
Huinan Guo ₁ , Guishu Liu ₁ , Mengying Wang ₁ , Yan Zhang ₁ , Weiqin Li ₁ , Kai Chen ₁ , Yafei Liu ₁ , Mengyuan Yue ₁ , Yijing Wang ₁

Affiliation

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 CoSe2 nano-thorn coated on porous carbon cloth. The designed flexible CoSe2 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-CoSe2 /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 .

中文翻译：

原位制备负载在多孔碳布上的类似CoSe2的纳米刺骨，作为用于钠离子存储的柔性电极。

最近正在研究基于柔性电极材料的钠离子电池（SIB），以改善缓慢的动力学并提高能量密度。过渡金属硒化物具有出色的导电性和高容量；然而，它们的低电导率和严重的体积膨胀引起了寿命降低和容量衰减的挑战性问题。在本文中，巧妙地设计了一种通过碳化和硒化物协同作用的原位构建方法，以合成涂覆在多孔碳布上的骨状CoSe2纳米刺的柔性电极。设计的具有稳定结构特征的柔性CoSe2电极显示出增强的Na离子存储能力，良好的倍率性能和出色的循环稳定性。不出所料

更新日期：2020-04-07

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