工程纤维素纳米纤维膜具有相反电荷特征,用于通过反向电透析产生高性能盐度梯度发电
Sha Wang1, Zhe Sun2, Mehraj Ahmad3
1Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China; International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China.
International journal of biological macromolecules
|August 31, 2023
概括
这项研究开发了用于逆电透析的纤维素纳米纤维膜,从盐度差异产生电力. 膜的功率密度为2.87W m-2,可以直接为小型电子设备供电.
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
- 可再生能源可再生能源是可再生能源.
背景情况:
- 反向电透析 (RED) 利用盐度梯度来产生能量.
- 基于纤维素的纳米流体膜面临由于表面电荷分布不均的挑战.
- 提高离子选择性和电荷控制对于高效的RED设备至关重要.
研究的目的:
- 开发具有可控制相反电荷特性的纤维素纳米纤维 (CNF) 膜,用于增强盐度梯度发电.
- 为了研究RED设备中的阴离子-CNF (A-CNF) 和阴离子-CNF (C-CNF) 膜的性能.
- 为了证明这些膜在实际能源采集应用中的潜力.
主要方法:
- 通过TEMPO氧化合成A-CNF膜,以获得可调节的负电荷密度.
- 通过以太化来制备C-CNF膜.
- 使用开发的CNF膜与人工海水和河水制造和测试RED设备.
主要成果:
- 为基于CNF的RED设备实现了2.87W m-2的最大输出功率密度.
- 从30个连接到系列的RED单元中显示出3.11V的输出电压.
- 成功为LED灯和计算器等小型电子设备供电.
结论:
- 开发了具有受控相反电荷的新型CNF膜,用于高效的盐度梯度能量收集.
- 这些膜的高性能为RED技术的广泛应用提供了可行的途径.
- 这项研究有助于通过先进的离子交换膜技术推进可持续能源解决方案.
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