On January 14, the "High Power Density All-Vanadium Redox Flow Battery Stack" project, developed by Professor Li Xianfeng's team from our department and holding independent intellectual property rights, successfully passed the scientific and technological achievement evaluation organized by the China Petroleum and Chemical Industry Federation. The evaluation meeting was chaired by Zhao Ming, Director of the Science and Technology Project Department of the Science and Technology and Equipment Division of the China Petroleum and Chemical Industry Federation, with Academician Xie Zaiku from Sinopec Group serving as the Chairman of the Evaluation Committee.  Academicians Xu Chunming from China University of Petroleum and Peng Xiaojun from Dalian University of Technology were appointed as Vice-Chairs of the Evaluation Committee. Liu Zhongmin, Director of our institute, attended the meeting and delivered a speech. Relevant personnel from the research and functional departments, as well as representatives from enterprises, participated in the evaluation meeting.

Professor Liu Tao gave a presentation titled "High Power Density All-Vanadium Redox Flow Battery Stack," where he provided a detailed introduction to the project’s research objectives, technical approach, research content, innovations, technical advancements, intellectual property status, and potential applications. The evaluation committee experts thoroughly examined the evaluation materials, including novelty search reports, test reports, and other relevant documents. They also engaged in in-depth discussions with the R&D team on technical issues and the potential for technical applications. In conclusion, the evaluation committee experts unanimously agreed that the achievement is at the forefront of international standards and approved the evaluation.

Based on breakthroughs in key materials technologies such as weldable composite porous ion-conducting membranes and high-conductivity bipolar plates, the Li Xianfeng’s team, combining innovative structural designs like short-flow processes and ultra-thin electrodes, has developed a next-generation 70 kW high-power-density stack. This new stack features a twofold increase in volumetric power density and a 40% reduction in cost. This technology significantly enhances the economic viability and reliability of all-vanadium redox flow battery energy storage systems and is expected to provide key technical support for the industrialization of all-vanadium flow batteries, contributing to the achievement of China's "dual carbon" goals. (Text by Rong Qian, Image by Cheng Tao)