静电纺丝
材料科学
阳极
纳米纤维
碳纳米纤维
储能
纳米技术
离子
化学工程
碳纤维
循环伏安法
兴奋剂
电极
电化学
复合材料
光电子学
碳纳米管
化学
复合数
有机化学
聚合物
功率(物理)
物理化学
量子力学
工程类
物理
作者
Di Huang,Daxiong Wu,Jun Zhu,Jian‐Wei Xie,Jingli Wu,Jie Liang
标识
DOI:10.1016/j.cclet.2022.04.014
摘要
One-dimensional carbon nanofibers are widely applied as anode material in the energy storage field due to its unique structure and high conductivity. In this work, one-dimensional [email protected] carbon nanofibers ([email protected] NFs) are successfully synthesized by electrospinning and annealed without extra troublesome conditions. ZnSe nanocrystals are enfolded in the N-doped carbon nanofibers, which can act as a protective layer to avoid the volume expansion of active material and promote ion transport during the cycling process. More importantly, the as-synthesized [email protected] NFs are served as the anode material and display the admirable storage properties for Na/K-ion batteries. The one-dimensional [email protected] NFs material shows the high capacity of 237 mAh/g for Na-ion batteries at a current density of 1 A/g for 2000 cycles. Meanwhile, it also delivers a high discharge capacity of 337 mAh/g for K-ion batteries at 0.2 A/g for 300 cycles. Additionally, it is confirmed that the pseudocapacitive contribution of the nano-structure material is up to 54.5% at a scan rate of 0.6 mV/s through the cyclic voltammetry (CV) measurement in K-ion batteries.
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