On December 16, 2023, the "Second National Advanced Energy Storage Technology Innovation Challenge" co-hosted by the Industry Development Promotion Center of the Ministry of Industry and Information Technology and the People's Government of Changzhou City was successfully held in Liyang City, Jiangsu Province. This competition received widespread attention in the industry, with a total of 286 projects received for the new energy storage product track. The project "High-specific energy metal-sulfur battery based on eutectic acceleration design" from the research group team members stood out among the 286 projects and won theTechnical Innovation Second Prize.
The team members of the research group who participated in the competition are: Xie Jia, Wu Qiang, Zeng Ziqi, Zhu Haolin, Qin Mingsheng, Liu Wei, Zhong Wei, and He Renjie.
This competition was upgraded to the New Energy Electronics Industry Innovation Competition's New Energy Storage Product Track and the Second Advanced Energy Storage Technology Innovation Challenge. It aims to respond to the national dual carbon strategy, promote the collaborative and integrated development of the entire energy electronics industry, enhance the industry's innovation initiative, and contribute Chinese solutions to energy security and climate change. Taking this competition as an opportunity, we will focus on energy electronics as an industry resource, technology resource, policy resource, social capital, and talent resource to make more valuable research achievements visible and more potential research teams discovered.
The research group focused on the difficulties of low conductivity of the sulfur electrode, volume expansion, polysulfide dissolution shuttle, and instability of the metal anode, as well as the shortcomings of the actual energy density and cycle life not meeting expectations. The team carried out systematic research work from three aspects: structural modification of the sulfur cathode, modification of the metal anode, and regulation of the electrolyte: 1) We pioneered eutectic acceleration modified sulfurized polyacrylonitrile, constructed a low tortuosity, structural strengthening, and high-specific energy long-life sulfur cathodes suitable for ultralow E/S; 2) We developed multifunctional interface-stable metal anodes that suppress side reactions and dendrite growth, and constructed long-cycle anodes with low N/P ratio; 3) We created low-cost, low-density, and high-conductivity fluorobenzene diluted electrolytes that constructed high-specific energy long-life metal-sulfur batteries.
