Abstract

A method is for manufacturing an energy storage device. The method includes the steps of: providing a first anode portion with a first metal-ion pre-doping degree, providing a second anode portion with a second metal-ion pre-doping degree which is lower than the first metal-ion pre-doping degree, and producing an electrode assembly by combining the first and second anode portions with a cathode and a separator for preventing electrical contact between the anode portions and the cathode. An electrode assembly and an energy storage device are provided having a container including the electrode assembly.

IPC Classes  ?

• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
• H01G 11/06 - Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
• H01G 11/50 - Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
• H01G 11/70 - Current collectors characterised by their structure

Abstract

A method is for manufacturing an energy storage device, wherein the method includes the steps of providing a pre-sodiated anode having a solid electrolyte interface layer and assembling the energy storage device by combining the pre-sodiated anode together with a lithium ion-containing cathode and a lithium ion-containing electrolyte. The invention further relates to an energy storage device having a cathode including lithium ions, a separator, and a lithium salt-containing electrolyte in a suitable case, wherein the energy storage device further has a pre-sodiated anode.

IPC Classes  ?

• H01M 4/04 - Processes of manufacture in general
• H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
• H01M 10/054 - Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• H01M 10/0569 - Liquid materials characterised by the solvents

Abstract

A method is for producing activated carbon. The method has the steps of carbonization of a carbon precursor by a first heat treatment to obtain char; mixing of the char with a chemical agent and a reducing agent to serve as a feedstock mixture; and activation of the feedstock mixture by a second heat treatment, wherein the chemical agent is selected from a group comprising potassium hydroxide, sodium hydroxide, sodium carbonate, potassium carbonate, potassium oxide, and sodium oxide and wherein the reducing agent comprises a metal. An electrode has the activated carbon produced by the method. A supercapacitor has the electrode.

IPC Classes  ?

• C01B 32/342 - Preparation characterised by non-gaseous activating agents
• H01G 11/34 - Carbon-based characterised by carbonisation or activation of carbon
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes

Abstract

The invention relates to an energy storage device (1) for providing a power to energy ratio of at least 25, wherein the energy storage device (1) comprises: - an anode (17) comprising an anode current collector (23) covered at least partly by an anode active material layer (25) comprising hard carbon, the anode active ma¬ terial layer (25) having a layer thickness of maximum 100 pm - a cathode (19) comprising a cathode current collector (27) covered at least partly by a cathode active material layer (27) comprising lithium iron phosphate, the cathode active material layer (27) having a layer thickness of maximum 100 pm; - a separator (21) for preventing electrical connection between the anode (17) and the cathode (19) while allowing lithium ions to diffuse though the separator (21), and - an electrolyte.

IPC Classes  ?

• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01M 10/052 - Li-accumulators

Abstract

The invention relates to a method for re-lithiation of a de-lithiated LFP cathode (3), wherein the method comprises the steps of: Providing a de-lithiated LFP cathode (3); Assembling a re-lithiation cell (1) comprising the de-lithiated LFP cathode (3) with a suitable counter electrode (5), wherein the de-lithiated LFP cathode (3) and counter electrode (5) are arranged at least partly in an aqueous electrolyte (7) comprising a lithium salt, and applying a current between the LFP cathode (3) and the counter electrode (5) to supply the LFP cathode (3) with electrons. The invention further relates to a method for pre- lithiating one or more anodes using the de-lithiated LFP cathode (3).

IPC Classes  ?

• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
• H01M 4/139 - Processes of manufacture
• H01M 10/54 - Reclaiming serviceable parts of waste accumulators

Abstract

The invention relates to a method for manufacturing an energy storage device (1), wherein the method comprises the steps of: providing a first anode portion (17) with a first metal-ion pre-doping degree (19), providing a second anode portion (21) with a second metal-ion pre-doping degree (23) which is lower than the first metal-ion pre-doping degree (19), and producing an electrode assembly by combining the first (17) and second (21) anode portions with a cathode (5) and a separator (7) for preventing electrical contact between the anode portions (17, 21) and the cathode (5). The invention further relates to an electrode assembly and an energy storage device (1) comprising a container comprising the electrode assembly.

IPC Classes  ?

• H01M 4/139 - Processes of manufacture
• H01M 4/04 - Processes of manufacture in general
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids
• H01G 11/06 - Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
• H01G 11/50 - Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation

Abstract

Method for pre-lithiating an anode, wherein the method comprises the steps of: packing an anode sheet with a lithium-comprising sheet as a jelly roll or stack in an electrolyte; transferring lithium ions to the anode sheet to obtain a pre-lithiated anode sheet by direct contact between the anode sheet and the lithium-comprising sheet or by discharging or charging the anode sheet towards the lithium-comprising sheet; and dividing the pre-lithiated anode sheet into a plurality of pre-lithiated anodes of a desired size and shape. The invention further relates to an electrochemical cell comprising an an-ode which is pre-lithiated by the method.

IPC Classes  ?

• H01M 4/04 - Processes of manufacture in general
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 10/0583 - Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with ‘’Z’’-shaped electrodes or separators
• H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
• H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes

Abstract

The invention relates to a method for pre-lithiating an anode for an energy storage device, wherein the method comprises the steps of: Assembling an electrochemical cell compris-ing the anode, an activated carbon electrode, and a solution comprising a dissolved lithi-um salt; charging the activated carbon electrode towards the anode; and disassembling the cell to obtain a pre-lithiated anode. The invention further relates to a method for pre-lithiating a plurality of anodes, wherein the method comprises repeating the steps of the method according the first aspect of the invention with the reusable activated carbon elec-trode and different anodes.

IPC Classes  ?

• H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 10/052 - Li-accumulators
• H01M 10/54 - Reclaiming serviceable parts of waste accumulators
• H01M 10/058 - Construction or manufacture

Abstract

The invention relates to a method for manufacturing a perforated electrode active material film, wherein the method comprises the steps of: manufacturing a self-supporting electrode active material film; and making holes in the electrode active material film to obtain a self-supporting perforated electrode active material film. The invention also relates to a method for manufacturing an electrode for an energy storage device, when the method comprises the steps of: manufacturing a perforated self-supporting electrode active mate-rial film according to the first aspect of the invention; and stacking the perforated film onto a coated current collector, wherein the coated current collector is coated with a conductive primer layer, to obtain a laminated electrode. The invention also relates to a self-supporting perforated electrode active material film, an electrode comprising the film, and an energy storage device comprising the electrode.

IPC Classes  ?

• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/04 - Processes of manufacture in general
• H01M 4/80 - Porous plates, e.g. sintered carriers
• B61B 1/00 - General arrangement of stations, platforms, or sidingsRailway networksRail-vehicle marshalling systems
• B61C 1/00 - Steam locomotives or railcars

Abstract

A method is for pre-lithiating a lithium-ion capacitor, wherein the method has the steps of adsorbing lithium ions on an activated carbon electrode; constructing the lithium-ion capacitor by assembling the activated carbon electrode and a negative electrode in an electrolyte; and lithiating the anode by charging the lithium-ion capacitor after assembly.

IPC Classes  ?

• H01G 11/06 - Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
• H01G 11/32 - Carbon-based
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes

Abstract

A method is for producing activated carbon. The method includes: a) mixing a carbonaceous precursor with chemically activating agents to obtain a feedstock mixture; b) producing activated carbon by heating the feedstock mixture under the atmosphere of a physically activating gas; and c) performing suitable post-activation treatment of the produced activated carbon. Step a) includes in sequence the sub-steps of: i. addition of a first chemically activating agent to obtain an impregnated precursor; and ii. addition of a second chemically activating agent to obtain the feedstock mixture. An activated carbon species is obtainable by the method. The activated carbon species may thus be tuned to have a pore size distribution optimized for use in a carbon electrode.

IPC Classes  ?

• C01B 31/12 - Preparation by using non-gaseous activating agents
• C01B 32/336 - Preparation characterised by gaseous activating agents
• C01B 32/348 - Metallic compounds
• H01G 11/34 - Carbon-based characterised by carbonisation or activation of carbon
• H01G 11/86 - Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes

Goods & Services

Carbon; Activated carbon; Silicon; Lithium; Battery electrolytes. Electricity; Electrical energy. Battery packs; Battery testers; Battery charging equipment; Battery adapters; Battery chargers; Batteries; Lithium batteries; Lithium ion batteries; Condensers [capacitors]; Car batteries; Electrical cells and batteries; Electrical batteries; Rechargeable batteries; Anodes; Cathodes. Recharging of batteries; Replacement of batteries. Energy distribution; Storage of energy and fuels. Production of energy; Generation of electricity.