Core Insights - The research team has developed a high-stability ultra-thin polymer membrane with a thickness of only 3 micrometers, which enhances the working current density of all-vanadium flow batteries to 300 milliamps per square centimeter [1][2]. Group 1: Research and Development - The polymer ion-selective membrane is favored in the market due to its low cost and ease of large-scale production [1]. - Traditional polymer membranes often have irregular pore structures, making it difficult to accurately separate active materials and charge carriers in flow batteries [1]. - A new interfacial crosslinking strategy was proposed to create a robust covalent crosslink network in the membrane, improving mechanical stability even at reduced thickness [1][2]. Group 2: Performance and Applications - The pore size distribution of the membrane's separation layer ranges from 1.8 Å to 5.4 Å, allowing for precise separation of active materials and rapid conduction of charge carriers [2]. - The ultra-thin membrane exhibits ultra-low surface resistance and active material permeability across a wide pH range, reducing ion transport resistance [2]. - The membrane was tested in an all-vanadium flow cell, achieving an energy efficiency exceeding 80% at a high current density of 300 milliamps per square centimeter [2]. - The ultra-thin membrane can also be applied to alkaline zinc-iron flow batteries and aqueous organic flow batteries, demonstrating excellent performance at high current densities [2].

Core Viewpoint - The article highlights the upcoming "2025 TrendBank (Yinchuan) Long-duration Energy Storage Industry Conference," focusing on advancements in energy storage technologies such as flow batteries, compressed air storage, and hydrogen storage, aiming to foster collaboration within the industry [2][3][19]. Summary by Sections Conference Details - The conference will take place on July 2-3, 2025, at the Yinchuan Lida Deep Hang International Hotel, with over 300 participants expected [19]. - It is organized by TrendBank in collaboration with Shanghai Electric Energy Storage Technology Co., Ltd., and supported by various local government and industry associations [20]. Key Topics and Speakers - The event will feature discussions on cutting-edge technologies in energy storage, including a special session on compressed air and hydrogen storage, with notable speakers such as Liu Bing from Guohong Hydrogen Energy [5][8]. - A significant highlight will be the release of the "2025 TrendBank Long-duration Energy Storage Industry Development Blue Book" during the conference [3][20]. Industry Context - The Su-Yin Industrial Park, where the conference is held, aims to develop a robust energy storage battery manufacturing industry chain, focusing on lithium-ion, sodium-ion, and flow battery production [22]. - The park is part of a broader initiative to enhance regional cooperation and development between Ningxia and Suzhou, promoting new energy and advanced manufacturing sectors [22]. Registration and Participation - Registration for the conference is free, with options for meals available at a cost, emphasizing the goal of sharing knowledge and resources across the industry [29][31]. - Participants must register using their personal mobile numbers to ensure proper attendance tracking and access to conference materials [31].