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锂掺杂间苯二酚-甲醛干凝胶用于高功率密度水系对称超级电容器
Lithium-doped resorcinol–formaldehyde xerogels for high-power-density aqueous symmetric supercapacitors
| 作者 | Springer Nature remains neutral with regard to jurisdictional claims in published maps · institutional affiliations. |
| 期刊 | Journal of Materials Science: Materials in Electronics |
| 出版日期 | 2025年1月 |
| 卷/期 | 第 36.0 卷 |
| 技术分类 | 储能系统技术 |
| 技术标签 | 储能系统 |
| 相关度评分 | ★★★★★ 5.0 / 5.0 |
| 关键词 | 干凝胶 锂掺杂 超级电容器 比电容 XRD |
语言:
中文摘要
干凝胶因其三维可调的多孔结构、大的比表面积和优异的电学性能，在超级电容器等储能器件中具有广阔的应用前景。本研究成功制备了锂掺杂的RF干凝胶，并通过X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）以及比表面积（BET）分析对其结构和组成进行了表征，证实了材料的成功合成。循环伏安法（CV）测试结果表明，10%锂掺杂RF干凝胶在电流密度为0.1 Ag⁻¹时的恒电流充放电比电容（C GCD）达到最大值62.4 Fg⁻¹。对于10%锂掺杂干凝胶超级电容器，在0.1 Ag⁻¹电流密度下实现了34.6 Whkg⁻¹的最大能量密度。而50%锂掺杂干凝胶超级电容器在0.4 Ag⁻¹电流密度下获得了573.3 Wkg⁻¹的最大功率密度，与以往研究相比，表现出更高的能量密度和功率密度。
English Abstract
Xerogels, characterized by their three-dimensional and tunable porous structure, large specific surface area, and high electrical properties, have great potential in energy storage devices such as supercapacitors. Li-doped RF xerogels were successfully produced in this study, and XRD, FTIR, XPS, SEM, TEM, and BET analyses were performed to confirm their formation. Cyclic voltammetry (CV) analysis showed a maximum C GCD value of 62.4 Fg −1 at a current density of 0.1 Ag −1 for 10% Li-doped RF xerogels. The maximum energy density was 34.6 Whkg −1 at a current density of 0.1 Ag −1 for the 10% Li-doped xerogel supercapacitor. The maximum power density was obtained as 573.3 Wkg −1 at a current density of 0.4 Ag −1 for the 50% Li-doped xerogel supercapacitors, indicating high energy and power density compared to previous studies.
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SunView 深度解读
该锂掺杂气凝胶超级电容器技术对阳光电源储能系统具有重要参考价值。其高功率密度(573.3 Wkg⁻¹)和能量密度(34.6 Whkg⁻¹)特性可应用于ST系列PCS的直流侧功率缓冲模块,改善PowerTitan储能系统的瞬态响应性能。该材料的三维多孔结构和大比表面积特性可为充电桩产品的超级电容辅助启动单元提供技术优化方向,提升GFM控制模式下的电网支撑能力和VSG虚拟惯量响应速度,增强储能系统在调频调峰场景的快速充放电性能。