纤维素膜构筑盐差能发电器件及其性能研究

Performance Research of Cellulose Membrane for Salinity-gradient Power Generation

关键词:  纤维素膜  竹溶解浆  离子选择性传输  盐差能

Key Words:cellulose membrane  bamboo dissolving pulp  ion selective transport  salinity-gradient power

摘要:本研究以竹溶解浆为原料，通过简单的溶解再生技术制备高性能的纤维素膜，并通过调节成膜的厚度得到离子电导率为0.099 mS/cm的膜材料。结果表明，较低厚度的纤维素膜可以产生较高的开路电压、短路电流和功率输出密度：在500倍盐浓度差下，32 μm纤维素膜具有-119 mV的开路电压、132.4 μA短路电流和16.33 mW/m²的输出功率密度。

Abstract:In this study， the renewable and low-cost cellulose was used for preparing the ion-exchange membrane via a simple dissolution and generation process with bamboo dissolving pulp as raw material， where the resultant cellulose membrane with an ionic conductivity of 0.099 mS/cm. The results showed that the lower thickness of cellulose membrane achieved the high performance of salinity-gradient power generation. At 500 times salt-concentration difference， the cellulose membrane with a low thickness of 32 μm， showed the open circuit voltage of -119 mV， short circuit current of 132.4 μA and output power density of 16.33 mW/m².