成果報告書詳細
管理番号20160000000434
タイトル*平成27年度中間年報 先進・革新蓄電池材料評価技術開発
公開日2016/6/22
報告書年度2015 - 2015
委託先名技術研究組合リチウムイオン電池材料評価研究センター
プロジェクト番号P13007
部署名スマートコミュニティ部
和文要約
英文要約1.Outline and Achievements of Research & Development
a)Leading-edge Lithium Ion Batteries
1. Battery-evaluation-method development of High potential positive electrode(LNMO)
After the investigation on various electrolytes durable against high potential, the problematic gas formation can be suppressed with the mixture of particular fluorinated solvents. The improved model of the standard battery has been recorded on the documents of battery assembling method and battery evaluation protocol to deal with the material evaluation.
2.Battery-evaluation-method development of High capacity positive electrode (213 solid solution)
The contribution of oxygen atoms to the high capacity of the 213 solid solution has been clarified with the high energy X-ray absorption spectrum. The standard battery model is pre-charged to 280 mAh/g at 0.05C as the prescribed pretreatment. The appearance of a spinel structure on the active material surface causes the decrease in the discharge voltage during the cycle test. The standard battery model has been recorded on the documents of battery assembling method and battery evaluation protocol to deal with the material evaluation.
3.Battery-evaluation-method development of High capacity negative electrode (Si materials)
The performance of the SiO-graphite mixed negative electrode has been improved by the improvement of the SiO material and the strengthening of the binder. The two kinds of the standard model of the improved negative electrode combined with olivine or NCA positive electrode have been recorded on the documents of battery assembling method and battery evaluation protocol to deal with the material evaluation.
4.Battery-evaluation-method development of Flame-retardant electrolyte (battery)
The safety evaluation method for electrolytes and separators has been established with the battery composed of Li2CoO3 and graphite electrodes. The additive causing no thermal runaway or cycle degradation and a safe separator have been identified and recorded on the documents of battery assembling method and battery evaluation protocol to deal with the material evaluation.
b)Innovative Battery
Material-evaluation-method development for Innovative battery with new material(s)
The evaluation method for the sheet-type battery has been developed by the preparation of the binder materials for the coating. The detail has been recorded on the documents of battery-assembling method and battery-evaluation protocol. The analysis methods for sulfide solid electrolytes have been also investigated.
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