一个灵活的全固态不对称超级电容器,基于氧化瓦纳/石墨烯和聚氨酸凝的纳米复合物,具有卓越的操作稳定性和能量密度
Mohammad Barazandeh1, Sayed Habib Kazemi1, Farzad Roohi1
1Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
ACS omega
|October 27, 2025
概括
一种新的V2O5 / rGO / 聚氨水凝纳米复合材料为储能提供高电导率. 这种材料使灵活的超级电容器具有出色的电容和稳定性,可用于先进的应用.
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
- 纳米技术纳米技术
背景情况:
- 具有高电导率的多孔聚合物基材料对于各种应用至关重要,特别是在储能领域.
- 开发先进的电极材料对于提高超级电容器性能至关重要.
研究的目的:
- 为高性能超级电容器合成和表征一种新的V2O5 / rGO / 聚氨酸凝 (VG / PANi-HG) 的纳米复合物.
- 为了评估VG/PANi-HG作为一个灵活的,独立的电极的电化学性能.
- 使用合成材料组装和测试一个不对称的全固态超级电容器装置.
主要方法:
- 在现场氧化聚合被用来在碳纤维基板上合成VG/PANi-HG纳米复合物.
- 电化学方法,包括循环电压测量和静电电荷放电,用于评估超级电容器的性能.
- 使用VG/PANi-HG作为正电极和氧化石墨烯作为负电极构建了一个不对称的全固态超级电容器,并使用PVA水凝电解质.
主要成果:
- VG/PANi-HG电极在电流密度为2.7 A g-1.1时表现出高特异电容982 F g-1的高特异电容.
- 这种不对称的全固态超级电容器表现出了极好的周期寿命稳定性.
- 该装置在能量密度为29.44Wh kg-1.1的情况下,实现了2kW kg-1的功率密度.
结论:
- 合成的VG/PANi-HG纳米复合材料是灵活超级电容器的极具前景的电极材料.
- 该材料的性能支持其用于先进的电化学能量存储设备的潜力.
- 该研究强调了结合V2O5,减少氧化石墨烯和聚氨酸凝的有效性,以获得卓越的性能.
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