Co/P联合合的竹制木陶,其三明治结构通过碳纳米管电子沉积改造为超级电容电极
Le Gong1, Rongxiang Zeng2, Yiqing Shi2
1College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hengyang Normal University, Hengyang 421010, China.
Bioresource technology
|March 13, 2024
概括
研究人员开发了一种基于竹子的超级电容器新型电极. 这种以碳纳米管 (CNT) 和辅助化元素进行修改的碳基材料,具有高特异电容和能量密度,可有效储存能量.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 开发高效和成本效益的基于碳的超级电容器对于储能至关重要.
- 来自生物质的材料为电极制造提供了可持续和丰富的资源.
研究的目的:
- 为提高超级电容器性能,创建一种由竹子衍生的新型电极,具有三明治结构.
- 研究协同兴奋剂和碳纳米管改造对电化学性质的影响.
主要方法:
- 用H3PO4和CO2+催化石墨化预处理竹 Veneer 和纤维.
- 使用NaOH的热水激活和碳纳米管 (CNT) 的电沉积被用于创建CNT@Co/P电极.
- 电化学性能使用循环电压测量和静电电荷-放电测量进行了评估.
主要成果:
- 由此产生的CNT@Co/P电极保留了天然的竹结构,并呈现出三明治结构.
- 在电流密度为0.2 A/g的情况下,特定电容达到了453.72 F/g.
- 在500W/kg的功率密度下,达到21.3Wh/kg的能量密度.
结论:
- 开发的CNT@Co/P电极表现出卓越的电化学性能,使其成为超级电容应用的有希望的候选者.
- 生物质衍生结构,协同兴奋剂和CNT修改的结合有效地提高了储能能力.
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