摘要:
The disclosed technology generally relates to electrodes for secondary batteries, and more particularly to electrodes for secondary batteries having graphene oxide (GO) sheets. In one aspect, an electrode for a secondary battery includes a current collector having coated thereon an active material. The active material includes graphite microparticles intermixed with nanoparticles or microparticles, where the nanoparticles or microparticles comprises silicon, silicon monoxide, silicon dioxide, tin, tin oxide, germanium, aluminum or combinations thereof. The graphite microparticles have a mean cross-sectional dimension in a range of about 1 micron to about 200 microns. The electrode additionally includes a plurality of contiguous graphene oxide (GO) sheets formed over the active material, wherein the GO sheets have a mean carbon-to-oxygen ratio of about 2:1 to about 20:1, wherein each of the GO sheets contacts at least another of the GO sheets, such that the GO sheets generally encapsulate the active material to provide cohesion and mechanical stability thereto.
摘要:
A novel silver-lithium-iodine solid-state energy device and system are disclosed. The rechargeable, self-assembled, dual-function, metal-iodide battery exhibits small size and high deliverable power. Inert until activation, the device may be stored for long periods of time. Upon activation, the device assembles the required electrochemical moieties for operation without external intervention. The device limits short-circuiting and self-discharge of the system by spontaneous reactions at the electrode / electrolyte interfaces, and thus is self-healing. By incorporating both silver and lithium in the same system, a dual function is achieved, whereby the characteristics of a lithium-based battery dominate at a low load and those of a silver-based battery dominate under a high load.
摘要:
According to an example, a charge level of a battery is detected with a processing resource communicatively coupled to the battery. In response to detecting a battery at full charge, the current full charge capacity of the battery is recorded, and an error cycle count, a design cycle count, and a full charge capacity at a last calibration are fetched. A maximum allowable battery decay level is calculated based on the error cycle count, the design cycle count, and the full charge capacity at last calibration. In an example, in the event that the current full charge capacity is less than the full charge capacity at the last calibration minus the maximum allowable battery decay level, a battery calibration alert is triggered.
摘要:
Systems and methods for charging and discharging a plurality of batteries are described herein. In some embodiments, a system includes a battery module, an energy storage system electrically coupled to the battery module, a power source, and a controller. The energy storage system is operable in a first operating state in which energy is transferred from the energy storage system to the battery module to charge the battery module, and a second operating state in which energy is transferred from the battery module to the energy storage system to discharge the battery module. The power source electrically coupled to the energy storage system and is configured to transfer energy from the power source to the energy storage system based on an amount of stored energy in the energy storage system. The controller is operably coupled to the battery module and is configured to monitor and control a charging state of the battery module.
摘要:
Die Erfindung betrifft eine elektrochemische Zelle (1), umfassend eine negative Elektrode (2b), eine positive Elektrode (2a), einen Aluminium-Stromkollektor (3a), welcher elektrisch leitend mit der positiven Elektrode verbunden ist und einen Elektrolyt (4). Der Elektrolyt (4) weist einen Anteil an nicht-ionischen organischen Verbindungen von weniger als 1,0 Gewichtsprozent am gesamten Elektrolyten auf und umfasst eine ionische Flüssigkeit als Lösungsmittel mit einem Anteil von mindestens 80 Gewichtsprozent am gesamten Elektrolyten. Dabei umfasst die ionische Flüssigkeit ein Kation der allgemeinen Formel (A) und ein Anion der allgemeinen Formel (B). Außerdem weist die ionische Flüssigkeit ein Leitsalz auf, umfassend Lithium-Kationen sowie Anionen der allgemeinen Formel (C). Der Elektrolyt der elektrochemischen Zelle weist weniger als 0,5 Gewichtsprozent PF 6 - auf. Der Aluminium-Stromkollektor der elektrochemischen Zelle verfügt über eine Schutzschicht umfassend AlF 3 .
摘要:
Systems and methods may place a battery in a first constant voltage charging mode and monitoring a diminishing current of the battery while the battery is in the first constant voltage charging mode. Additionally, the battery may be placed in a constant current charging mode when the diminishing current falls to a first predetermined threshold. In one example, a rising voltage of the battery is monitored while the battery is in the constant current charging mode and the battery is placed in a second constant voltage charging mode at an end of the charge cycle in response to the rising voltage reaching a second predetermined threshold. Moreover, a charge current corresponding to the constant current charging mode may be adjusted based on a charge capacity of the battery.
摘要:
Provided is a method of manufacturing a secondary battery including an electrode body and an electrolyte, in which the electrode body includes a positive electrode, a negative electrode, and a separator. This method includes: constructing the electrode body; performing an initial charging treatment on the cell; and performing an aging treatment on the initially charged cell. Before completion of the aging treatment, this method further includes a treatment of bonding the positive electrode and the separator to each other.
摘要:
Die Erfindung bezieht sich auf eine Batteriezelle (50) mit einem ersten Zellterminal (52) und einem zweiten Zellterminal (54). Die Batteriezelle (50) weist mindestens eine Kommunikationsschnittstelle (56) zum Datenaustausch zumindest mit einer Formierendstufe (16) auf. Ferner umfasst die Batteriezelle (50) eine integrierte Überwachungssensorik (60) und eine integrierte Batteriezustandserkennungssensorik (62), mit einem Speicher (110) für Formierungsdaten der Batteriezelle (50).
摘要:
The present invention provides a method for producing a secondary battery, capable of forming a uniform membrane on a wound body. Provided is a method including a step for reducing an internal pressure of an exterior (30), a step for pouring an electrolyte solution (E) into the exterior (30), a step for sealing the exterior (30), a step for impregnating the electrolyte solution (E) into the wound body (100) from both axial end portions (100a, 100b) thereof, a step for performing initial charging of a battery (10), and a step for performing high-temperature aging of the battery (10). The additive LPFO is added into the electrolyte solution (E) in an amount such that the internal pressure of the exterior (30) in the step for performing the high-temperature aging becomes equal to or higher than a saturation vapor pressure of the electrolyte solution (E) in the high-temperature aging.