NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
To provide a negative electrode which enables the formation of a nonaqueous electrolyte secondary battery superior in charge and discharge cycle characteristics, and a nonaqueous electrolyte secondary battery arranged by use of the negative electrode, and which relates to the goals 12, 3, 7, 11 of S...
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Zusammenfassung: | To provide a negative electrode which enables the formation of a nonaqueous electrolyte secondary battery superior in charge and discharge cycle characteristics, and a nonaqueous electrolyte secondary battery arranged by use of the negative electrode, and which relates to the goals 12, 3, 7, 11 of Sustainable Development Goals (SDGs).SOLUTION: A negative electrode for a nonaqueous electrolyte secondary battery according to the present invention has, on a collector, a negative electrode mixture layer containing a negative electrode active material and a binder. A surface part of the negative electrode mixture layer on a side opposite to the collector has a porosity of 40% or more. A nonaqueous electrolyte secondary battery according to the invention has a positive electrode, a negative electrode, a separator interposed between the positive and negative electrodes, and a nonaqueous electrolyte. The nonaqueous electrolyte secondary battery has, as the negative electrode, a negative electrode for a nonaqueous electrolyte secondary battery according to the invention.SELECTED DRAWING: Figure 6
【課題】 充放電サイクル特性に優れた非水電解質二次電池を構成することのできる負極と、前記負極を用いた前記非水電解質二次電池とを提供する。本発明は持続可能な開発目標(SDGs)の目標12、3、7、11に関連する。【解決手段】 本発明の非水電解質二次電池用負極は、負極活物質とバインダとを含有する負極合剤層を集電体上に有し、前記負極合剤層の前記集電体とは反対側の表面部における空隙率が、40%以上であることを特徴とするものである。また、本発明の非水電解質二次電池は、正極、負極、前記正極と前記負極との間に介在するセパレータ、および非水電解質を有し、前記負極として、本発明の非水電解質二次電池用負極を有することを特徴とするものである。【選択図】 図6 |
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