用于高性能离子电容器的软木衍生碳板
María Dolores Casal1, Noel Díez1, Sara Payá1
1Instituto de Ciencia y Tecnología del Carbono (INCAR), CSIC, Francisco Pintado Fe 26, 33011 Oviedo, Spain.
概括
来自软木的可持续S-doped碳板提供高储存能力和能量密度. 这些先进的材料使高效的离子电容具有出色的循环稳定性,用于储能应用.
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
- 可持续能源 可持续能源
背景情况:
- 开发用于储能的先进碳材料至关重要.
- 对于大规模应用,需要可持续且具有成本效益的前体.
- 硫可以提高碳材料的电化学性能.
研究的目的:
- 用于从可再生生物质 (软木) 制备硫添加碳板.
- 为了研究这些S-doped碳板的储存性能.
- 开发和测试使用S-doped和多孔碳板的离子电容器.
主要方法:
- 软木的轻微球磨,以解构其3D结构.
- 使用地球上丰富的硫源 (>14 wt% S) 进行硫兴奋剂.
- 化学激活以产生高度多孔的碳板 (SBET > 2700 m2/g).
主要成果:
- S-doped碳板具有高的Na储能 (300-550 mAh/g在0.1 A/g) 和良好的体积容量.
- 材料处理高电流密度 (55-140 mAh/g 在10 A/g).
- 一个离子电容器实现了高能量/功率 (90Wh/kg在29kW/kg) 与强大的循环 (>10,000循环,0.0018%的衰减/循环).
结论:
- 来自软木的可持续S-doped碳板是离子电池的阳极材料.
- 多孔的碳板可以提高离子储存和电容器的性能.
- 开发的离子电容器表现出极好的能量密度,功率密度和循环稳定性.
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