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来自硫化素纳米复合物的质子交换膜,用于氧化流电池应用

Fernanda Brito Dos Santos¹, Philip Spencer McMichael¹, Alex Whitbeck²

¹Department of Chemical and Biological Engineering, Advanced Materials Group, The University of British Columbia, 2360 E Mall, Vancouver, BC, V6T 1Z3, Canada.

Small (Weinheim an der Bergstrasse, Germany)

|March 23, 2024

概括

研究人员从硫化木质素纳米粒子和聚乙烯醇开发了新的质子交换膜 (PEM). 这些基于生物的PEM显示出对储能应用的希望,比传统的石油衍生材料提供更好的性能和可持续性.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
可再生能源可再生能源是可再生能源.

背景情况:

质子交换膜 (PEM) 对氧化还原流电池 (RFB) 至关重要,但通常是昂贵的,石油衍生和环境问题.
现有的生物基替代品努力平衡电化学性能与稳定性.

研究的目的:

开发一种可持续的,高性能的PEM,使用生物基材料来储能.
为了研究硫化素纳米颗粒 (NanoSLs) 作为自然衍生的PEM材料的潜力.

主要方法:

合成的硫化木质素纳米粒子 (NanoSLs) 增强了表面积和可混合性.
将纳米SL纳入聚乙烯醇 (PVOH) 矩阵中,以创建纳米复合材料膜.
在RFB中描述了膜特性,包括离子交换能力,质子导电性和电化学性能.

主要成果:

基于纳米SL的膜的离子交换能力 (1.26 meq g-1) 比商业的Nafion 112 (0.98 meq g-1) 高.
在现场实现了80.4mS cm-1的质子导电性,超过了许多生物复合PEM.
证明了具有竞争力的RFB性能,具有91%的库伦比效率,68%的能效和78%的电压效率在20mA cm-2.2时.

结论:

由硫化素纳米颗粒衍生出的纳米复合PEM为清洁能源应用提供了可持续和高价值的替代方案.
这项研究突出了将森林生物质废物流转化为先进的储能材料的潜力.

关键词:

能源生产能源生产离子导电纳米通道离子交换膜是一种修饰的素纳米颗粒是修饰的素纳米颗粒.-氧化回氧流电池的电流电池是-的.

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