例 Lecture 13 86 Solid-state Electrolyte in Li-ion Batteries Chen Junsong School of Materials and Energy 2020.04
Solid-state Electrolyte in Li-ion Batteries Chen Junsong School of Materials and Energy 2020.04 Lecture 13
Content 6 Why solid-state electrolyte(SSE)? ·Requirements of SSE History and Category of SSE Examples of SSE in each type 2
2 Content • Why solid-state electrolyte (SSE)? • Requirements of SSE • History and Category of SSE • Examples of SSE in each type
Why SSE? /956 ① The Fire Triangle in a Safety！ Li-ion battery O2:To sustain the fire Temperature/heat: Gas release from side Reaching the ignition reactions during point of the fuel charge/discharge OXYGEN IGNITION Thermal runaway due to heat released from side reactions FUEL Fuel:The thing to catch fire The organic liquid electrolyte is combustible High Voltage 3
3 Why SSE? Safety! Fuel: The thing to catch fire The organic liquid electrolyte is combustible O2 : To sustain the fire Gas release from side reactions during charge/discharge Temperature/heat: Reaching the ignition point of the fuel Thermal runaway due to heat released from side reactions The Fire Triangle in a Li-ion battery High Voltage ① ②
Requirements of SSE 956 lonically conductive Resist dendrite growth but electronically and avoid transport of insulating other species lonic Mechanical conductivity strength Remain stable Thermal Electro/Chemic stability al stability at elevated Remain stable temperatures during operation Interfacial compatibiliy Compatible with the cathode and anode 4
4 Requirements of SSE Mechanical strength Electro/Chemic al stability Interfacial compatibiliy Thermal stability Ionic conductivity Ionically conductive but electronically insulating Resist dendrite growth and avoid transport of other species Remain stable during operation Compatible with the cathode and anode Remain stable at elevated temperatures
History of SSE 2D Na transport identified in Discovery of lithium phosphorus B-Alumina (Na20.11Al2O3) oxynitride(LiPON) High-temperature Inorganic solid electrolyte Aqueous batteries with Na-S batteries Li-ion batteries mediator-ion solid electrolytes 1960s 1980s 1990s 2000s 2010s ·ZEBRA batteries Solid electrolyte Polymer Li-ion batteries Li-air,Li-S and Li-Br,batteries 1.ZEBRA cell:NaCl,Al,Fe,Ni SSE extending its application to powder as active material other lithium-based battery systems 2.Lithium ion transport identified in poly(ethylene oxide)(PEO) 5
5 History of SSE 1960s 2D Na transport identified in b-Alumina (Na2O·11Al2O3 ) 1980s 1990s 2000s 2010s 1. ZEBRA cell: NaCl, Al, Fe, Ni powder as active material 2. Lithium ion transport identified in poly(ethylene oxide) (PEO) Discovery of lithium phosphorus oxynitride (LiPON) SSE extending its application to other lithium-based battery systems