NON-AQUEOUS ELECTROLYTE BATTERY BATTERY PACK AND VEHICLE

• Main Authors: YASUDA KAZUHIRO, TAKAMI NORIO, HOSHINA KEIGO, YAMASHITA YASUNOBU, ISOZAKI YOSHIYUKI
• Format: Patent
• Language: English; Korean
• Published: 25.09.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; TRANSPORTING; VEHICLES IN GENERAL

Provided is a non-aqueous electrolyte battery capable of preventing reduction in capacity and cell expansion. More specifically, according to an embodiment of the present invention, provided is a non-aqueous electrolyte battery. The non-aqueous electrolyte battery includes a cathode, an anode, and a non-aqueous electrolyte. The anode contains an anode active material containing titanium oxide, and has a coating film covering over at least some portions of a surface of the anode. The coating film contains fluorine, and satisfies an equation (1), 0.2 <= F1/F2 <= 0.8 In the equation (1), F1 refers to a ratio (%) of fluorine atoms bound to organic atoms among fluorine atoms contained in the coating film, whereas F2 refers to a ratio (%) of fluorine atoms bound to metal atoms among fluorine atoms contained in the coating film. 본 발명은, 용량 저하 및 셀 팽창을 억제 가능한 비수전해질 전지를 제공하는 것이다. 하나의 실시 형태에 의하면, 비수전해질 전지가 제공된다. 이 비수전해질 전지는, 정극과, 부극과, 비수전해질을 구비한다. 부극은, 티타늄 산화물을 포함하는 부극 활물질을 포함하고, 부극의 표면의 적어도 일부를 피복하고 있는 피막을 갖는다. 피막은, 불소를 포함하고, 하기식 (1)을 만족한다. 0.2≤F1/F2≤0.8 ... (1) 식 (1) 중, F1은, 피막이 포함하고 있는 불소 원자 중, 유기계 원자에 결합한 불소 원자의 비율(％)이며, F2는, 피막이 포함하고 있는 불소 원자 중, 금속 원자에 결합한 불소 원자의 비율(％)이다.