Flexible Organic Framework‐Modified Membranes for Osmotic Energy Harvesting

Author:

Lin Tao1,Zhang Lei1,Li Chao2,Fu Yong‐Hong1,Gao Longcheng2,Hou Jun‐Li1

Affiliation:

1. Department of Chemistry Fudan University 220 Handan Road Shanghai 200433 China

2. Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry Beihang University Beijing 100191 China

Abstract

Comprehensive SummaryBioinspired membranes are advantageous in capturing the osmotic energy. However, the conventional hybrid membranes possess low harvesting power density due to their low interfacial ionic transport efficiency and high internal resistance. Herein, a new kind of hybrid membranes consisting of porous polymer and flexible organic frameworks was developed. The 3D porous framework enables ions to flux with high efficiency at the polymer‐framework interface, resulting in high osmotic energy harvesting efficiency. By systematically screening the pore size of the frameworks, the output power density as high as 5.7 W/m2 was achieved under 50‐fold KCl salinity gradient.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Publisher

Wiley

Subject

General Chemistry

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