NEGATIVE ELECTRODE COMPOSITION FOR ELECTRIC STORAGE DEVICE NEGATIVE ELECTRODE INCLUDING THE COMPOSITION ELECTRIC STORAGE DEVICE AND METHOD FOR PRODUCING NEGATIVE ELECTRODE FOR ELECTRIC STORAGE DEVICE

• Main Authors: FUKUNAGA ATSUSHI, IMAZAKI EIKO, ITO HIDEAKI, MARUYAMA SHINICHI, KOBAYASHI HITOSHI, NUMATA KOMA, YAMASHITA TOSHIAKI, SAKAI SHOICHIRO, NITTA KOJI
• Format: Patent
• Language: English; Korean
• Published: 24.07.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

나트륨 이온을 가역적으로 담지하는 부극 활물질과, 금속 나트륨과, 이들을 분산시키는 액상 분산매를 포함하는 부극 조성물을 조제하는 공정과, 부극 조성물을 부극 집전체에 유지시키는 공정과, 부극 집전체에 유지시킨 부극 조성물로부터 액상 분산매의 적어도 일부를 증발시킴으로써, 부극 활물질과 금속 나트륨과 부극 집전체를 구비하는 부극 전구체를 얻는 공정과, 부극 전구체와 나트륨 이온 전도성을 갖는 전해질을 접촉시켜, 금속 나트륨으로부터 용출시킨 나트륨을 부극 활물질에 도핑하는 공정을 포함하는 축전 디바이스용 부극의 제조 방법을 제공한다. Provided is a method for producing a negative electrode for an electric storage device, the method comprising the steps of preparing a negative electrode composition comprising a negative electrode active material that reversibly carries a sodium ion, metal sodium, and a liquid dispersion medium for dispersing them; allowing a negative electrode current collector to hold the negative electrode composition; evaporating at least part of the liquid dispersion medium from the negative electrode composition held by the negative electrode current collector, thereby giving a negative electrode precursor comprising the negative electrode active material, the metal sodium, and the negative electrode current collector; and bringing the negative electrode precursor into contact with an electrolyte having sodium ion conductivity, thereby doping the negative electrode active material with sodium eluted from the metal sodium.