渗透力
纳米孔
反向电渗析
材料科学
缓压渗透
膜
电动现象
氮化硼
功率密度
化学工程
纳米流体学
电解质
纳米技术
纳米孔
正渗透
反渗透
电渗析
功率(物理)
化学
工程类
物理
量子力学
生物化学
作者
Aaditya Pendse,Semih Cetindag,P. Řehák,Sanjay K. Behura,Haiqi Gao,Ngoc Hoang Lan Nguyen,Tongshuai Wang,Vikas Berry,Petr Král,Jerry W. Shan,Sangil Kim
标识
DOI:10.1002/adfm.202009586
摘要
Abstract Recent studies of the high energy‐conversion efficiency of the nanofluidic platform have revealed the enormous potential for efficient exploitation of electrokinetic phenomena in nanoporous membranes for clean‐energy harvesting from salinity gradients. Here, nanofluidic reverse electrodialysis (NF‐RED) consisting of vertically aligned boron‐nitride‐nanopore (VA‐BNNP) membranes is presented, which can efficiently harness osmotic power. The power density of the VA‐BNNP reaches up to 105 W m −2 , which is several orders of magnitude higher than in other nanopores with similar pore sizes, leading to 165 mW m −2 of net power density (i.e., power per membrane area). Low‐pressure chemical vapor deposition technology is employed to uniformly deposit a thin BN layer within 1D anodized alumina pores to prepare a macroscopic VA‐BNNP membrane with a high nanopore density, ≈10 8 pores cm −2 . These membranes can resolve fundamental questions regarding the ion mobility, liquid transport, and power generation in highly charged nanopores. It is shown that the transference number in the VA‐BNNP is almost constant over the entire salt concentration range, which is different from other nanopore systems. Moreover, it is also demonstrated that the BN deposition on the nanopore channels can significantly enhance the diffusio‐osmosis velocity by two orders of magnitude at a high salinity gradient, resulting in a huge increase in power density.
科研通智能强力驱动
Strongly Powered by AbleSci AI