Abstract: A flexible all-solid state supercapacitor is provided that includes a first electrode and a second electrode, and a flexible nanofiber web, where the flexible nanofiber web connects the first electrode to the second electrode, where the flexible nanofiber web includes a plurality of flexible nanofibers, where the flexible nanofiber includes a hierarchal structure of macropores, mesopores and micropores through a cross section of the flexible nanofiber, where the mesopores and the micropores form a graded pore structure, where the macropores are periodically distributed along the flexible nanaofiber and within the graded pore structure.

Abstract: A method of forming a sulfur-based cathode material includes: 1) providing a sulfur-based nanostructure; 2) coating the nanostructure with an encapsulating material to form a shell surrounding the nanostructure; and 3) removing a portion of the nanostructure through the shell to form a void within the shell, with a remaining portion of the nanostructure disposed within the shell.

Abstract: Embodiments of the present disclosure generally relate to methods and devices for use of low temperature polysilicon (LTPS) thin film transistors in liquid crystal display (LCD) and organic light-emitting diode (OLED) displays.

Abstract: A switchable voltage regulation circuit includes a power supply chip and a voltage regulation module. The voltage regulation module includes first and second resistors and first and second switch units. A first terminal of the first resistor is electrically coupled to a power supply and a first output pin of the power supply chip. A first terminal of the second resistor is electrically coupled to the second terminal of the first resistor. The first switch unit is electrically coupled between the first terminal of the first resistor and the second terminal of the first resistor. The second switch unit is electrically coupled between the first terminal of the second resistor and the voltage output. By manual switching, or by transistors under control of a baseboard management unit, the resistances can be switched in or switched out to regulate the voltage.

Abstract: A switchable voltage regulation circuit includes a power supply chip and a voltage regulation module. The voltage regulation module includes first and second resistors and first and second switch units. A first terminal of the first resistor is electrically coupled to a power supply and a first output pin of the power supply chip. A first terminal of the second resistor is electrically coupled to the second terminal of the first resistor. The first switch unit is electrically coupled between the first terminal of the first resistor and the second terminal of the first resistor. The second switch unit is electrically coupled between the first terminal of the second resistor and the voltage output. By manual switching, or by transistors under control of a baseboard management unit, the resistances can be switched in or switched out to regulate the voltage.

Abstract: Described here is a solid-state lithium-ion battery, comprising a cathode, an anode, and a solid-state electrolyte disposed between the cathode and the anode, wherein the electrolyte comprises a hexacyanometallate represented by AxPy[R(CN)6-wLw]z, wherein: A is at least one alkali metal cation, P is at least one transition metal cation, at least one post-transition metal cation, and/or at least one alkaline earth metal cation, R is at least one transition metal cation, L is an anion, x, y, and z are related based on electrical neutrality, x>0, y>0, z>0, and 0?w?6.

Abstract: A battery includes an anode, a cathode, and an electrolyte disposed between the anode and the cathode. The anode includes a current collector and an interfacial layer disposed over the current collector, and the interfacial layer includes a polymer including dynamic bonds.

Abstract: Electrochemical systems for harvesting heat energy, and associated electrochemical cells and methods, are generally described. The electrochemical cells can be configured, in certain cases, such that at least a portion of the regeneration of the first electrochemically active material is driven by a change in temperature of the electrochemical cell. The electrochemical cells can be configured to include a first electrochemically active material and a second electrochemically active material, and, in some cases, the absolute value of the difference between the first thermogalvanic coefficient of the first electrochemically active material and the second thermogalvanic coefficient of the second electrochemically active material is at least about 0.5 millivolts/Kelvin.

Abstract: Embodiments of the present disclosure generally relate to methods and devices for use of low temperature polysilicon (LTPS) thin film transistors in liquid crystal display (LCD) and organic light-emitting diode (OLED) displays.

Abstract: An optoelectronic device has a hybrid metal-dielectric optoelectronic interface including an array of nanoscale dielectric resonant elements (e.g., nanopillars), and a metal film disposed between the dielectric resonant elements and below a top surface of the resonant elements such that the dielectric resonant elements protrude through the metal film. The device may also include an anti-reflection coating. The device may further include a metal film layer on each of the dielectric resonant elements.

Abstract: In some implementations, a cathode is formed by (1) providing a cathode additive including (a) a matrix including a lithium compound, and (b) metal nanostructures embedded in the matrix; and (2) combining the cathode additive with a cathode active material to form a mixture. In other implementations, a cathode is formed by (1) providing a cathode additive including a compound of lithium and at least one non-metal or metalloid; and (2) combining the cathode additive with a cathode active material to form a mixture.

Abstract: A conformal graphene-encapsulated battery electrode material is formed by: (1) coating a battery electrode material with a metal catalyst to form a metal catalyst-coated battery electrode material; (2) growing graphene on the metal catalyst-coated battery electrode material to form a graphene cage encapsulating the metal catalyst-coated battery electrode material; and (3) at least partially removing the metal catalyst to form a void inside the graphene cage.

Abstract: A microbial battery is provided. At the anode, microbial activity provides electrons to an external circuit. The cathode is a solid state composition capable of receiving the electrons from the external circuit and changing from an oxidized cathode composition to a reduced cathode composition. Thus, no external source of oxygen is needed at the cathode, unlike conventional microbial fuel cells. The cathode can be removed from the microbial battery, re-oxidized in a separate oxidation process, and then replaced in the microbial battery. This regeneration of the cathode amounts to recharging the microbial battery.

Abstract: Described herein is a mixing entropy battery including a cationic electrode for sodium ion exchange and an anionic electrode for chloride ion exchange, where the cationic electrode includes at least one Prussian Blue material, and where the mixing entropy battery is configured to convert salinity gradient into electricity.

Abstract: In an example implementation of the disclosed technology, a method includes receiving, at a processor, an indication of a user intent, the user intent indicative of an intent of a user to control a functionality of a receiving device in wireless communication with the computing device. The method also includes serializing at least a portion of data representing the indication of the user intent into a text bundle. The method also includes generating a message configured to control the functionality of the receiving device according to the user intent, the message comprising at least the text bundle. Finally, the method includes transmitting the message for delivery to the receiving device.

Abstract: A battery electrode includes an electrochemically active material and a binder covering the electrochemically active material. The binder includes a self-healing polymer and conductive additives dispersed in the self-healing polymer to provide an electrical pathway across at least a portion of the binder.

Abstract: An optoelectronic device has a hybrid metal-dielectric optoelectronic interface including an array of nanoscale dielectric resonant elements (e.g., nanopillars), and a metal film disposed between the dielectric resonant elements and below a top surface of the resonant elements such that the dielectric resonant elements protrude through the metal film. The device may also include an anti-reflection coating. The device may further include a metal film layer on each of the dielectric resonant elements.

Abstract: Described here is a method for improving the catalytic activity of an electrocatalyst, comprising subjecting the electrocatalyst to 1-10 galvanostatic lithiation/delithiation cycles, wherein the electrocatalyst comprises at least one transition metal oxide (TMO) or transition metal chalcogenide (TMC). Also described here is an electrocatalyst and a water-splitting device comprising the electrocatalyst.

Abstract: Techniques are disclosed for methods of post-treating an etch stop or a passivation layer in a thin film transistor to increase the stability behavior of the thin film transistor.

Abstract: Provided are electrode layers for use in rechargeable batteries, such as lithium ion batteries, and related fabrication techniques. These electrode layers have interconnected hollow nanostructures that contain high capacity electrochemically active materials, such as silicon, tin, and germanium. In certain embodiments, a fabrication technique involves forming a nanoscale coating around multiple template structures and at least partially removing and/or shrinking these structures to form hollow cavities. These cavities provide space for the active materials of the nanostructures to swell into during battery cycling. This design helps to reduce the risk of pulverization and to maintain electrical contacts among the nanostructures. It also provides a very high surface area available ionic communication with the electrolyte. The nanostructures have nanoscale shells but may be substantially larger in other dimensions.