| 熔盐锌热法制备三维多孔碳用于高性能钾离子电池负极材料 |
| Three-Dimensional Porous Carbon Prepared by Molten Salt Zinc-Thermal Method as Anode for High Performance Potassium Ion Batteries |
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| 摘要: 采用熔盐锌热法，以蔗糖为前驱体成功制备了三维多孔碳材料，并将其用作钾离子电池负极材料。所制备的三维多孔碳具有大量相互贯通的孔道，有效地缓解了电极在充放电循环过程中的体积效应，提高了电解液对电极的浸润性，缩短了钾离子的扩散路径，从而展现出优异的循环稳定性和倍率性能。三维多孔碳电极在0.5 A·g-1的电流密度下，经过2 500次循环后仍展现174.6 mAh·g-1的比容量，甚至在4.4 A·g-1的高倍率下容量仍保持在170 mAh·g-1。 |
| 关键词: 锌热 三维多孔碳 倍率性能 循环稳定性 钾离子电池 |
| 基金项目: 国家自然科学基金（No.21701163，No.21671181，No.21831006）和安徽省青年基金（No.1808085QB25）资助项目 |
| Abstract: Three-dimensional (3D) porous carbon materials are successfully prepared by molten salt zinc-thermal method using sucrose as precursor and used as anode materials for potassium ion batteries. The prepared 3D porous carbon has a large number of interconnected channels, which can effectively alleviate the volume effect of the electrode during the charge-discharge cycling process, improve the infiltration of electrolyte to the electrode, shorten the diffusion path of K+. Therefore, it shows excellent cycle stability and rate performance. 3D porous carbon electrode delivers the specific capacity of 174.6 mAh·g-1 after 2 500 cycles at current density of 0.5 A·g-1 and 170 mAh·g-1 at a high rate of 4.4 A·g-1. |
| Keywords: zinc-thermal 3D porous carbon rate performance cycle stability potassium ion batteries |
| 投稿时间：2019-07-01 修订日期：2019-09-24 |
| 摘要点击次数: 1997 |
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| 马凯,林宁.熔盐锌热法制备三维多孔碳用于高性能钾离子电池负极材料[J].无机化学学报,2020,36(3):415-420. |
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