阳极
磷酸
电池(电)
材料科学
碳纤维
化学工程
储能
碳化
钠
多孔性
无机化学
扩散
电化学
电极
化学
复合材料
复合数
冶金
物理化学
工程类
功率(物理)
物理
热力学
量子力学
扫描电子显微镜
作者
Zhipeng Xu,Ying Huang,Lei Ding,Jiaxin Huang,Heng Gao,Tiehu Li
出处
期刊:Energy & Fuels
[American Chemical Society]
日期:2020-08-13
卷期号:34 (9): 11565-11573
被引量:18
标识
DOI:10.1021/acs.energyfuels.0c02286
摘要
Looking for low-cost and environmentally friendly electrode materials can make a sodium ion battery a promising energy storage device. In this study, a stable p-doped biomass carbon (PBC) anode material is prepared from a natural basswood by phosphoric acid activation and carbonization, which is used for a sodium ion storage. As an anode, the best PBC-11 has a capacity of 326.3 mAh g–1 at 0.1 A g–1 after 500 discharges. After the reaction kinetics test, low impedance, fast sodium diffusion coefficient, and capacitance-dominated characteristics make the PBC-11 electrode have an excellent rate performance and maintain a capacity of ∼90.6% after 3000 cycles at a high current of 2 A g–1. The appropriate proportion of phosphoric acid activation plays a decisive role in the defects and porosity of carbon materials. Stable electrochemical performance and low material and preparation cost can make a Na+ storage one of the future power storage.
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