Core Viewpoint - The project on high energy density and high safety lithium secondary battery materials, developed by China University of Petroleum (East China) and Shanghai Space Power Research Institute, has won the first prize in technological invention at the Shandong Provincial Science and Technology Awards due to its breakthroughs in lithium secondary battery materials [1] Group 1: Industry Context - The rapid development of sectors such as new energy vehicles and aerospace has raised higher demands for the energy density and safety of lithium secondary batteries [1] - China's strategic planning for new energy and major aerospace projects indicates that future battery energy density needs to exceed 500 watt-hours per kilogram, while current traditional lithium-ion batteries are nearing the theoretical limit of 350 watt-hours per kilogram [1] Group 2: Technological Innovations - The project team has developed a local metastable controllable construction technology to optimize ion transport channels, resulting in an oxide solid electrolyte with an ionic conductivity of 3.6 millisiemens per centimeter and an electrochemical window greater than 6.0 volts [2] - A new conjugated framework electrolyte system was created to stabilize the solid/solid interface, achieving a lithium ion transfer number of 0.839 and lithium stability exceeding 10,500 hours [2] - The team invented a stepwise interface construction technology for electrode sheets, which significantly reduced the interface resistance of solid-state batteries by 90%, achieving a volumetric energy density of 1,070 watt-hours per liter, nearly double that of commercial lithium batteries [3] Group 3: Achievements and Recognition - The project has authorized 30 invention patents and published 134 SCI papers, with team members receiving multiple honors including the National "Outstanding Youth" Fund and "Ten Thousand Talents Plan" for technological innovation leadership [3]