کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7744211 | 1498219 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multi-protection from nanochannels and graphene of SnSb-grapheneâcarbon composites ensuring high properties for potassium-ion batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Multi-protection from nanochannels and graphene of SnSb-grapheneâcarbon composites ensuring high properties for potassium-ion batteries Multi-protection from nanochannels and graphene of SnSb-grapheneâcarbon composites ensuring high properties for potassium-ion batteries](/preview/png/7744211.png)
چکیده انگلیسی
Potassium-ion batteries (KIBs) are drawing great attention as the substitutions of commercial lithium-ion batteries (LIBs), due to the abundance of potassium and close redox potential to lithium. However, the lack of suitable electrodes to host large K+ for rapid as well as reversible insertion/extraction hinders the developments of KIBs. In this work, SnSb-grapheneâcarbon (SnSb-G-C) nanofibers with porous multichannel structure are synthesized via an electrospinning method and applied as potential KIB anodes. The SnSb-G-C anodes exhibit a great cycling stability of 275.14â¯mAhâ¯gâ1 over 100â¯cycles at the current density of 100â¯mAâ¯gâ1, as well as the high rate capacity of 207.27â¯mAhâ¯gâ1 at 1â¯Aâ¯gâ1, which are much better than those of SnSbâcarbon (SnSb-C) and grapheneâcarbon (G-C) counterparts. The enhanced electrochemical performances of SnSb-G-C nanofibers can be ascribed to the nanochannels and the dispersive graphene inside the carbon matrix, effectively buffering the structural changes and protecting the SnSb particles from destruction. Meanwhile, the dispersed graphene facilitates the electrons transportation, leading to the good rate capability. The results may pave the way to more future studies on KIBs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 324, 15 October 2018, Pages 267-275
Journal: Solid State Ionics - Volume 324, 15 October 2018, Pages 267-275
نویسندگان
Zhao Huang, Zhi Chen, Shuangshuang Ding, Changmiao Chen, Ming Zhang,