Large energy density batteries and methods of manufacture
AssigneeThe Texas A&M University System
InventorsGang Yang, Choongho Yu
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Abstract
Embodiments of the claimed invention are directed to a device, comprising: an anode that includes a lithiated silicon-based or lithiated carbon-based material or pure lithium metal or metal oxides and a sandwich-type sulfur-based cathode, wherein the anode and the cathode are designed to have porous structures. An additional embodiment of the invention is directed to a scalable method of manufacturing sandwich-type Li—S batteries at a significantly reduced cost compared to traditional methods. An additional embodiment is directed to the use of exfoliated CNT sponges for enlarging the percentage of sulfur in the cathode to have large energy density.
Claims11
A method of manufacturing a sandwich-type Li—S battery, comprising:
- preparing a thin film of carbon based porous materials from which a first layer of thin film and a second layer of thin film are formed;
- sandwiching a sulfur layer between the first layer of thin film and the second layer of thin film;
- pressing the first layer of thin film, the sulfur layer, and the second layer of thin film together to form a sandwich-type cathode;
- assembling the sandwich-type cathode and an anode into a pouch, wherein the anode is positioned between layers of the sandwich-type cathode;
- filling the pouch with an electrolyte;
- and
- baking and degassing the pouch to form the sandwich-type Li—S battery.
Dependencies are inferred from the claim text.