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培根贝衍生的活性炭用于高电化学性能超级电容器电极.

Sarah J Zou1, Mumukshu D Patel2, Lee M Smith3

  • 1Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA.

Materials (Basel, Switzerland)
|July 13, 2024
PubMed
概括

研究人员开发了一种新的,环保的方法,用坚果制造高性能活性炭,用于超级电容器. 这一过程产生了卓越的能量存储,具有出色的稳定性和可扩展性.

关键词:
活性炭活性炭的使用方法电极电极是一个电极.坚果贝 坚果贝 坚果贝超级电容器是一个超级电容器.

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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:

  • 使用碳纳米材料的电双层电容器 (EDLC) 提供高功率和稳定性,但具有低电容和低效的激活.
  • 现有的生产活性炭的方法往往很复杂,对环境也很苛刻,限制了超级电容的应用.

研究的目的:

  • 开发一种具有成本效益和环保的方法来生产高性能活性炭 (AC).
  • 通过单步自我激活过程,从果贝 (PS) 中合成新型的AC.
  • 为了评估用合成的AC制造的超级电容器的性能.

主要方法:

  • 采用了结合碳化和激活的单步自激活过程.
  • 坚果被用作活性碳合成的前体.
  • 超级电容器是使用合成的果衍生的活性碳 (PSAC) 制造的,用于电化学测试.

主要成果:

  • 合成的PSAC呈现出高的特定孔积 (0.744 cm3/g) 和BET表面积 (1554 m2/g).
  • 基于PSAC的超级电容器在2A/g时达到269F/g的特定电容.
  • 超级电容器表现出极好的循环稳定性 (>15,000个循环) 和高能量/功率密度 (37.4Wh/kg和2.1kW/kg).

结论:

  • 这种新的自我激活方法提供了一种高效的途径,可以从果贝中生产高性能活性炭.
  • 由此产生的PSAC适用于开发环保和可扩展的超级电容器.
  • 这种方法解决了传统交流生产的局限性,并提高了超级电容器的性能.