杂原子
碳纤维
材料科学
阳极
兴奋剂
硼
电化学
储能
化学工程
钠
磷
纳米技术
无机化学
化学
有机化学
电极
光电子学
复合材料
戒指(化学)
冶金
功率(物理)
物理化学
工程类
物理
复合数
量子力学
作者
Jiaxin Zhang,Ying Huang,Chen Chen,Kaihang She
出处
期刊:Energy & Fuels
[American Chemical Society]
日期:2023-01-12
卷期号:37 (3): 2379-2386
被引量:5
标识
DOI:10.1021/acs.energyfuels.2c03551
摘要
Hard carbon materials have the advantages of low price, environmental friendliness, and good electrical conductivity but have the disadvantages of unsatisfactory sodium storage capacity and low long-cycle stability. The use of heteroatom doping and structural design can significantly improve the sodium storage properties of carbon materials. In this paper, a boron–phosphorus doped hard carbon material (CABP) was designed by using citric acid as the carbon source. The rich pore structure of CABP also provides fast transport channels for Na+, while the efficient doping of B and P atoms can distort the graphitic layer and generate more active sites and defects. The CABP carbon material therefore exhibits excellent electrochemical properties. It can obtain pretty good capacities of 246.8 mA h g–1 after 400 cycles at 0.1 A g–1. Moreover, it was able to maintain 161.9 mA h g–1 after 5000 cycles at 5 A g–1. This work provides a new route for the facile preparation of high-performance heteroatom-doped carbon materials and an idea for the preparation of diatom-doped materials for energy storage.
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