# US 2014/0154533 A1 · Electrochemical cell > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154533 A1 - Document ID: US20140154533A1 - Status: Published application - Kind: A1 - Application number: 14/087,628 - Filed: 2013-11-22 - Published: 2014-06-05 - Earliest claimed: 2012-11-23 - Assignees: Li-Tec Battery GmbH - Applicants: Li-Tec Battery GmbH - Inventors: Tim Schaefer; Denny Thiemig - Web page: https://patentgrep.com/patent/US20140154533A1 ## CPC - H01M 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)} - H01M 4/628: {Inhibitors, e.g. gassing inhibitors, corrosion inhibitors} - H01M 50/581: in response to temperature - H01M 4/622: {being polymers} - H01M 4/625: {Carbon or graphite} - H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y10T 29/49108: Electric battery cell making - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An electrochemical cell comprises at least one negative electrode including at least one material which is capable of absorbing charge carrier; at least one positive electrode including at least one material capable of releasing charge carrier; at least one electrolyte capable of transporting charge carrier, between the electrodes; and at least one protective device that is substantially an integral part in at least one of the electrodes and comprises at least one enclosure, the at least one protective device being designed such that if a damaging influence damaging the electrochemical cell occurs, in particular heat, at least one stabilizing additive is released from inside the enclosure. ## Claims ### Claim at position 1 1-8. (canceled) ### Claim 9 An electrochemical cell configured to provide at least occasionally electrical energy, comprising: at least one negative electrode including at least one material which is capable of absorbing charge carrier in the form of lithium ions during charge processes; at least one positive electrode including at least one material which is capable of releasing charge carrier in the form of lithium ions during charge processes; and at least one electrolyte, which is capable of transporting charge carrier, in the form of lithium ions, between the at least one negative electrode and the at least one positive electrode; and at least one protective device, wherein the protective device is an integral part in at least one of the at least one negative electrode and the at least one positive electrode and comprises at least one enclosure, wherein the at least one protective device is configured such that if a damaging influence in the form of heat damaging the electrochemical cell occurs, at least one stabilizing additive is released from inside the at least one enclosure. ### Claim 10 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one protective device comprises at least one storage container. ### Claim 11 (depends on 10) The electrochemical cell according to claim 10, wherein the at least one storage container is a microcapsule. ### Claim 12 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one stabilizing additive is a chemical stabilizing additive. ### Claim 13 (depends on 9) The electrochemical cell according to claim 9, wherein the stabilizing additive is configured to at least partially mitigate damage to the electrochemical cell caused by the damaging influence. ### Claim 14 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one enclosure of the protective device comprises a carbon-containing material. ### Claim 15 (depends on 14) The electrochemical cell according to claim 14, wherein the carbon-containing material is selected from the group consisting of: crystalline or amorphous carbon, graphite, carbon black, grapheme, and mixtures thereof. ### Claim 16 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one enclosure of the protective device comprises a polymeric material. ### Claim 17 (depends on 16) The electrochemical cell according to claim 16, wherein the polymeric material is selected from the group consisting of: thermoplastic polymers, polyalkylene- or polyolefine-based polymers, and mixtures thereof. ### Claim 18 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one enclosure of the protective device encloses the at least one stabilizing additive, and the stabilizing additive is comprised of material selected from the group consisting of: vinylene carbonate, PCM or polysulfide, and mixtures thereof. ### Claim 19 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one negative electrode is comprised of an electrochemically active material which is selected from the group consisting of: amorphous graphite, crystalline graphite, graphene, carbon-containing materials, lithium metal, lithium metal alloys, titanates, silicates, silicium, silicium alloys, tin, tin alloys, and mixtures thereof. ### Claim 20 (depends on 9) The electrochemical cell according to claim 9, wherein the at least one positive electrode is comprised of an electrochemically active material selected from the group consisting of: at least one compound LiMPO4, wherein M is at least one transition metal cation selected from the group consisting of: manganese, iron, cobalt, titanium, and combinations thereof; at least one lithium metal oxide or lithium metal mixed oxide in the crystal structure of spinel type, wherein the metal is selected from the group consisting of cobalt, manganese, and nickel; at least one lithium metal oxide or lithium metal mixed oxide in a crystal structure which is different from spinel type, wherein the metal is selected from the group consisting of: cobalt, manganese, and nickel; at least one sulfur compound in the form of elemental sulfur, iron sulfide, or iron polysulfide; and mixtures thereof. ### Claim 21 (depends on 9) A method for manufacturing an electrochemical cell according to claim 9, the method comprising: providing at least one negative electrode including at least one material which is capable of absorbing charge carrier in the form of lithium ions during charge processes; providing at least one positive electrode including at least one material which is capable of releasing charge carrier in the form of lithium ions during charge processes; providing at least one electrolyte, which is capable of transporting charge carrier, in the form of lithium ions, between the at least one negative electrode and the at least one positive electrode; providing at least one protective device, wherein the protective device is an integral part in at least one of the at least one negative electrode and the at least one positive electrode and comprises at least one enclosure, and wherein the at least one protective device is configured such that if a damaging influence in the form of heat damaging the electrochemical cell occurs, at least one stabilizing additive is released from inside the at least one enclosure; and assembling the electrochemical cell. ### Claim 22 (depends on 21) The method according to claim 21, wherein the at least one protective device comprises at least one storage container. ### Claim 23 (depends on 22) The method according to claim 22, wherein the at least one storage container is a microcapsule. ### Claim 24 (depends on 21) The method according to claim 21, wherein the at least one stabilizing additive is a chemical stabilizing additive. ### Claim 25 (depends on 21) The electrochemical cell according to claim 21, wherein the stabilizing additive is configured to at least partially mitigate damage to the electrochemical cell caused by the damaging influence. ### Claim 26 (depends on 9) A method, comprising: using the electrochemical cell according to claim 9 to supply energy for a load corresponding to at least one of mobile information equipment, tools, electrically driven cars, cars having hybrid drive, an automotive starting light ignition, aviation, aerospace, shipping, railed vehicles, and stationary energy storing devices.