PROTECTIVE LAYER OF ELECTROCHEMICAL CELL AND POLYMER USED AS OTHER ELEMENT

• Main Authors: ANDREA MISSKE, TOBIAS PETSCH, RUEDIGER SCHMIDT, VERONIKA G VINER, BALA SANKARAN, SVEN FLEISCHMANN
• Format: Patent
• Language: English; Japanese
• Published: 24.01.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide an electrochemical cell including a protective layer for preventing dendrite formation during recharging and reaction of a metal (eg, lithium metal) on the anode surface with an electrolyte to improve cycle life and safety.SOLUTION: An electrochemical cell includes an electroactive layer 20 and at least one layer 30b including a polymer which is formed by copolymerization of an olefinic monomer containing at least one electron withdrawing group and an olefinic comonomer containing at least one electron donating group.SELECTED DRAWING: Figure 1 【課題】再充電時の樹状突起形成や電解質とのアノード表面の金属（例えば、リチウム金属）の反応を防止し、サイクル寿命、安全性を向上する保護層を含む電気化学電池の提供。【解決手段】電気活性層２０及びポリマーを含む少なくとも１つの層３０ｂを含む電気化学電池であって、該ポリマーは、少なくとも１つの電子求引性基を含むオレフィン系モノマー及び少なくとも１つの電子供与性基を含むオレフィン系コモノマーの共重合から形成されてもよい電気化学電池。【選択図】図１