Abstract:
Solid-state laminate electrode assemblies and various methods for making the solid-state laminate electrode assemblies involve a lithium metal layer reactively bonded to a lithium ion conducting sulfide glass layer. During manufacture, highly reactive surfaces of the lithium metal layer and the lithium ion conducting sulfide glass layer are maintained in its substantially unpassivated state until they have been reactively bonded.
Abstract:
A lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner. An automated machine based system, apparatus and methods assessing and inspecting the quality of such vitreous solid electrolyte sheets, electrode sub-assemblies and lithium electrode assemblies can be based on spectrophotometry and can be performed inline with fabricating the sheet or web (e.g., inline with drawing of the vitreous Li ion conducting glass) and/or with the manufacturing of associated electrode subassemblies and lithium electrode assemblies and battery cells.
Abstract:
The present disclosure sets forth battery components for secondary and/or traction batteries. Described herein are new solid-state lithium (Li) conducting electrolytes including monolithic, single layer, and bi-layer solid-state sulfide-based lithium ion (Li + ) conducting catholytes or electrolytes. These solid-state ion conductors have particular chemical compositions which are arranged and/or bonded through both crystalline and amorphous bonds. Also provided herein are methods of making these solid-state sulfide-based lithium ion conductors including new annealing methods. These ion conductors are useful, for example, as membrane separators in rechargeable batteries.
Abstract:
A solid electrolyte includes an amorphous silica network and phosphoric acid. The phosphoric acid is contained in the amorphous silica network, and is typically in molecular form. The ratio of silicon to phosphorus in the solid electrolyte is about 1:4, and the silicon is in a four-coordinated state. The solid electrolyte is in the form of a dried (e.g., anhydrous) gel. The solid electrolyte may be used in a fuel cell membrane. Preparing the solid electrolyte includes reacting phosphoric acid in the liquid state with tetrachloride compound including silicon and a displaceable ligand to yield a fluid suspension, heating the fluid suspension to yield a liquid electrolyte comprising a particulate solid, separating the particulate solid from the liquid electrolyte, combining the particulate solid with water to yield a homogenous solution, forming a gel from the homogeneous solution, and removing water from the gel to yield the solid electrolyte.
Abstract:
Syntheses of alternating copolymers based on PEO and fluorinated polymers are described. Introduction of fluorinated polymer chains reduces the Tm of PEO and also increases the affinity and miscibility with ionic liquids, which improves ionic conductivity even at room temperature. The disclosed polymers containing PFPE have superior safety and are more flame retardant as compared to traditional electrolytes. Such alternating copolymers can be used as solid or gel electrolytes in Li batteries.
Abstract:
The present invention provides a sodium-aluminum secondary cell. The cell includes a sodium metal negative electrode, a positive electrode compartment that includes an aluminum positive electrode disposed in a positive electrolyte mixture of NaAl 2 X 7 and NaAlX 4 , where X is a halogen atom or mixture of different halogen atoms selected from chlorine, bromine, and iodine, and a sodium ion conductive electrolyte membrane that separates the negative electrode from the positive electrolyte. In such cases, the electrolyte membrane can include any suitable material, including, without limitation, a NaSICON-type membrane. Generally, when the cell functions, both the sodium negative electrode and the positive electrolyte are molten and in contact with the electrolyte membrane. Additionally, the cell is functional at an operating temperature between about 100 °C and about 200 °C.
Abstract:
A rechargeable battery includes at least an electrolyte layer (2), a cathode layer (4) and an anode layer (6). The electrolyte layer (2) includes a lithium salt compound arranged between a cathode surface (8) of the cathode layer (4) and an anode surface (10) of the anode layer (6). The anode layer (6) is a nanostructured silicon containing thin film layer including a plurality of columns (12), wherein the columns (12) are directed in a first direction perpendicular or substantially perpendicular to the anode surface (10) of the silicon thin film layer. The columns are arranged adjacent to each other while separated by grain-like column boundaries (14) running along the first direction. The columns (12) include silicon and have an amorphous structure in which nano-crystalline regions exist.
Abstract:
Die Erfindung betrifft eine Komposit-Separator umfassend Polymermembran, Bindemittel, fester anorganischer Lithium-Ionenleiter und Flüssigelektrolyt, wobei der anorganischen Festkörperelektrolyt in dem Komposit-Separator in einem höheren Volumen- und Gewichtsanteil als der Flüssigelektrolyt vorhanden ist. Zudem wird eine Lithiumionenbatterie umfassend den Komposit-Separator und ein Verfahren zur Herstellung des Komposit-Separators angegeben.