SECONDARY BATTERY, BATTERY SYSTEM, MICRO HYBRID BATTERY, AND NON-AQUEOUS ELECTROLYTE SOLUTION

• Main Authors: CHO JEONG JU, CHRISTOPHER CAMPION, ANTONI S GOZDZ, LESLIE J PINNELL
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery for maintaining cycle life at a high temperature and power supply at a low temperature with a significantly reduced need for a thermal management system.SOLUTION: A secondary battery includes: a carbon-containing negative electrode capable of intercalating and emitting lithium; a positive electrode with a lithium transition metal oxoanion electroactive substance; a separator; and a non-aqueous electrolyte solution including a lithium salt and at least one kind of organic solvent. The non-aqueous electrolyte solution does not contain γ-butyrolactone. The organic solvent includes: vinylene carbonate; and an additive such as ethylene sulfide.SELECTED DRAWING: Figure 5B 【課題】温度管理システムの必要性を著しく低減した、高温におけるサイクル寿命及び低温における電力供給を維持する電池を提供。【解決手段】リチウムをインターカレート及び放出可能な炭素含有負極と、リチウム遷移金属オキソアニオン電気活性物質を備える正極と、セパレータと、及びリチウム塩と、少なくとも１種の有機溶媒とを備える非水電解質液と、を備え、前記非水電解質液は、γ−ブチロラクトンを含まず、前記有機溶媒はビニレンカーボネートと、エチレンサルファイト等の添加剤を備える二次電池。【選択図】図５Ｂ