A cover element for an electronic device that includes a redrawn glass element, first and second primary surfaces, and a polymeric layer disposed over the first primary surface. The redrawn glass element has a reduced thickness and an average surface roughness of 1 nanometer or less. Further, the cover element can withstand a pen drop height of greater than 6 centimeters or 2.5 times or more than that of a control pen drop height of the cover element having a non-redrawn glass element the layer according to Drop Test 1.

A cover element for an electronic device that includes a redrawn glass element, first and second primary surfaces, and a polymeric layer disposed over the first primary surface. The redrawn glass element has a reduced thickness and an average surface roughness of 1 nanometer or less. Further, the cover element can withstand a pen drop height of greater than 6 centimeters or 2.5 times or more than that of a control pen drop height of the cover element having a non-redrawn glass element the layer according to Drop Test 1.

A method includes heating a glass preform having a plurality of glass layers and drawing the glass preform in a distal direction to form a drawn glass sheet extending distally from the glass preform and having the plurality of glass layers. The drawn glass sheet is thinner than the glass preform. The drawn glass sheet can be rolled onto a collection spool. At least a portion of a glass layer can be removed from the drawn glass sheet. An exemplary glass sheet includes a first glass layer, a second glass layer adjacent to the first glass layer, and a thickness of at most about 0.1 mm. An exemplary ion exchanged glass sheet includes a thickness of at most about 0.1 mm and a surface layer that is under a compressive stress and extends into an interior of the glass sheet to a depth of layer.

A method includes heating a glass preform having a plurality of glass layers and drawing the glass preform in a distal direction to form a drawn glass sheet extending distally from the glass preform and having the plurality of glass layers. The drawn glass sheet is thinner than the glass preform. The drawn glass sheet can be rolled onto a collection spool. At least a portion of a glass layer can be removed from the drawn glass sheet. An exemplary glass sheet includes a first glass layer, a second glass layer adjacent to the first glass layer, and a thickness of at most about 0.1 mm. An exemplary ion exchanged glass sheet includes a thickness of at most about 0.1 mm and a surface layer that is under a compressive stress and extends into an interior of the glass sheet to a depth of layer.

A standalone 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.

A standalone 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.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50° C. or higher.

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W.sub.cast) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10.sup.8 Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10.sup.7 Poise and drawing the cast glass into a glass ribbon having a width (W.sub.ribbon) that is less than W.sub.cast; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50° C. or higher.

A method of forming a glass ribbon including flowing molten glass into a sheet forming device to form formed glass. The formed glass having a first portion and a second portion, the first portion having a larger thickness than the second portion. The method further includes volumetrically heating the formed glass using an electromagnetic heating device, so that the first portion has a lower average viscosity than the second portion, and drawing the formed glass into a glass ribbon, such that the first portion is drawn with a higher rate of elongation than the second portion.

A method of forming a glass ribbon including flowing molten glass into a sheet forming device to form formed glass. The formed glass having a first portion and a second portion, the first portion having a larger thickness than the second portion. The method further includes volumetrically heating the formed glass using an electromagnetic heating device, so that the first portion has a lower average viscosity than the second portion, and drawing the formed glass into a glass ribbon, such that the first portion is drawn with a higher rate of elongation than the second portion.