Abstract:
An interfacial protective coating layer of LTO is effective in preventing unwanted interfacial reactions between the solid-state electrolyte and cathode electrodes from occurring. Incorporation of the inventive coating into sodium-based all-solid-state batteries allows for room temperature operation, high voltage, and long cycle life.
Abstract:
Compositions, materials, methods, articles of manufacture and devices that pertain to chemical-resistant elastomer binders and flexible, printed, high-performance electrochemical systems based on said binders. The chemical-resistant, flexible elastomer binder can be used in printable, flexible high areal energy density batteries for wearable and flexible electronics and printable, flexible fuel cells. More generally, the disclosed binder material can be used in any printed electrochemical and electronic systems, e.g., supercapacitors, electrochromic cells, sensors, circuit interconnections, organic electrochemical transistors, touch screens, solar cells, etc.
Abstract:
Cathode materials and cathodes for sodium and sodium-ion cells and batteries include sodium, lithium and transition metal oxide cathode materials. An example cathode is the composition Na x Li y Ni z Mn u M v O w , with M being one or more metal cation, x+y≥0.9, (x+y)/(z+u+v)>1, 0≦z≦0.9, 0≦u≦0.9, 0≦v≦0.9, x+y+z+u+v is less than w, and the value of w depends on the proportions and average oxidation states of the metallic elements. The combined positive charge of the metallic elements is balanced by the number of oxygen anions, w. W is less than or equal to 2, i.e., Na x Li y Ni z Mn u MvO 2-a , and desirably equal to or slightly less than 2. M is one or more metal cations selected preferably from one or more divalent, trivalent, tetravalent, pentavalent or hexavalent cations, such as Mg 2+ , Cu 2+ , Co 3+ , B 3+ , Fe 3+ , Al 3+ , Ti 4+ , Zr 4+ , V 5+ , and Cr 6+ etc. Synthesis methods are provided.
Abstract translation:钠和钠离子电池和电池的阴极材料和阴极包括钠,锂和过渡金属氧化物阴极材料。 一个示例性阴极是组成NaxLiyNizMnuMvOw,其中M是一个或多个金属阳离子,x +y≥0.9,(x + y)/(z + u + v)> 1,0,nlE; z≦̸ 0.9,0和nlE; u≦̸ 0.9 ,0≦̸ v≦̸ 0.9,x + y + z + u + v小于w,w的值取决于金属元素的比例和平均氧化态。 金属元素的组合正电荷由氧阴离子的数量w平衡。 W小于或等于2,即NaxLiyNizMnuMvO2-a,并且理想地等于或略小于2.M是优选选自一种或多种二价,三价,四价,五价或六价阳离子的一种或多种金属阳离子,例如 作为Mg2 +,Cu2 +,Co3 +,B3 +,Fe3 +,Al3 +,Ti4 +,Zr4 +,V5 +和Cr6 +等。
Abstract:
Methods and articles of manufacture for free-standing lithium phosphorus oxynitride (LiPON) thin films are disclosed. The methods facilitate synthesizing the LiPON thin films in a free-standing form with controllable film thicknesses and areas. The free-standing LiPON thin films, absent a solid substrate contacting the LiPON thin films, enable studying fundamental properties of LiPON thin films including mechanical properties and glassy transition behavior. In some embodiments, the method includes modifying a surface of a substrate, forming a layer of LiPON on the modified surface of the substrate, and separating the layer of LiPON from the substrate. The free-standing LiPON thin films, no longer requiring solid substrates, may be used in applications requiring an ionically conductive or electronically insulating coating, film, or barrier layer.
Abstract:
Disclosed herein are a sulfide-based all-solid-state battery and a method of manufacturing the same, wherein the sulfide-based all-solid-state battery includes a positive electrode active material coated with a lithium niobate precursor, which is manufactured by a polyol process having low production cost, such that it improves safety and increases capacity of the sulfide-based all-solid-state battery.
Abstract:
Sodium-based all solid-state batteries exhibit improved battery cycle life and stability with the use of a new chloride-based sodium solid electrolyte in which sodium diffusivity within the electrolyte is enhanced through substitution of atoms including one or more of Y with Zr, Ti, Hf, Ta, and Na with one or more of Ca and Sr.
Abstract:
In a method for recycling all solid-state batteries, spent battery cells are dissolved in anhydrous ethanol. The resulting solution is separated into solids and supernatants which are separately processed to regenerate the solid electrolyte and the solid electrode materials. The supernatant is subjected to vacuum evaporation to precipitate an electrolyte powder, which is then annealed under flowing oxygen. The solid electrode material is regenerated by washing the solids with water, drying the washed solids, relithiating the washed solids, and annealing the relithiated solids. The resulting materials are suitable for use in fabrication of new all-solid state batteries.
Abstract:
Methods, systems, and apparatuses are described for implementing electrochemical energy storage devices using a liquefied gas electrolyte. The mechanical designs of an electrochemical device to house a liquefied gas electrolyte as well as methods of filling and sealing said device are presented.