کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6606345 | 459523 | 2016 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solvothermal synthesis of Na2Ti3O7 nanowires embedded in 3D graphene networks as an anode for high-performance sodium-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Sodium titanate (Na2Ti3O7) has been extensively investigated as a promising anode material for sodium ion batteries (SIBs), while the poor cycling stability caused by its low electrical conductivity hinders its practical applications. Herein, Na2Ti3O7 nanowires embedded into three-dimensional (3D) reduced graphene oxide to form a porous hybrid composite (Na2Ti3O7/rGO) has been successfully synthesized via a facile solvothermal method. As an anode for SIB, this composite exhibits significantly enhanced electrochemical performances due to the porous interconnected conductive network with uniformly embedded Na2Ti3O7 nanowires, which is beneficial for the increase of contact area between the electrolyte and active material, and also provides an ideal conductive matrix for fast electron/ion transportation. Therefore, the composite delivers a reversible capacity of â¼134Â mAh/g after 300 cycles at 100Â mA/g, and a good rate capacity of 116Â mAh/g even at a high current density of 2000Â mA/g, among the best results of the reported Na2Ti3O7-based materials, demonstrating its potential SIB applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 211, 1 September 2016, Pages 430-436
Journal: Electrochimica Acta - Volume 211, 1 September 2016, Pages 430-436
نویسندگان
Zhiming Zhou, Hongmei Xiao, Fan Zhang, Xiaolong Zhang, Yongbing Tang,