JP7062245B2 - High-performance safety Easy mass production All-solid-state battery - Google Patents

High-performance safety Easy mass production All-solid-state battery Download PDF

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JP7062245B2
JP7062245B2 JP2018062013A JP2018062013A JP7062245B2 JP 7062245 B2 JP7062245 B2 JP 7062245B2 JP 2018062013 A JP2018062013 A JP 2018062013A JP 2018062013 A JP2018062013 A JP 2018062013A JP 7062245 B2 JP7062245 B2 JP 7062245B2
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state battery
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義郎 中松
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義郎 中松
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

全固体電池 All solid state battery

現在の電解液に基づく電池（リチウムイオン電池を含む）は、容量、寿命、安全性で問題があった。これを改善すべく考えられた公知の全固体電池はLi＋の通り道の性能が高い材料は燃えやすいので、安全性が問題。又、電極と電解質の界面抵抗が大きい、EV用高性能品は量産技術が未確立等の欠点があった。 Current electrolyte-based batteries (including lithium-ion batteries) have problems with capacity, life, and safety. The known all-solid-state battery, which was designed to improve this, has a problem of safety because materials with high performance in the Li + path are flammable. In addition, high-performance EV products, which have a large interface resistance between electrodes and electrolytes, have drawbacks such as unestablished mass production technology.

本発明は全固体電池の上記の多くの問題を解決するのが課題である。 It is an object of the present invention to solve many of the above problems of all-solid-state batteries.

本発明は固体電解質をボロン又はボロンを含ませる。 The present invention includes boron or boron as a solid electrolyte.

本発明により安全性が向上し電解液漏れ、揮発、発火がなくなり、数分で充電する超急速充電が可能、エネルギ密度の大幅向上、自己放電が大幅低減、電池の設計自由度を増す、多層化が可能となり、基盤に表面実装出来る部品・部材になる、バッテリの容量が５０％拡大し、速いチャージが行われ、リチャージの耐久性が高く、２００，０００回リチャージしても劣化が無いこと等の効果が実験で確かめられた。 The present invention improves safety, eliminates electrolyte leakage, volatilization, and ignition, enables ultra-rapid charging that charges in a few minutes, greatly improves energy density, significantly reduces self-discharge, increases battery design freedom, and multi-layer. It becomes a component / member that can be surface-mounted on the board, the capacity of the battery is expanded by 50%, fast charging is performed, the durability of recharging is high, and there is no deterioration even after recharging 200,000 times. The effects such as these were confirmed by experiments.

本発明第一実施例の概念図Conceptual diagram of the first embodiment of the present invention 本発明第二実施例の概念図Conceptual diagram of the second embodiment of the present invention 本発明第三実施例の概念図Conceptual diagram of the third embodiment of the present invention 本発明第四実施例の概念図Conceptual diagram of the fourth embodiment of the present invention

従来の電解質を用いるリチウムイオン電池は、一定以上の高電圧下では内部抵抗値が急激に増大した。
又、公知の全固体電池は電極と固体電解質の接触面が狭く界面抵抗値が非常に大きかった。
本発明の全固体電池は高電圧を印加しても内部抵抗値が低いままで、高出力化が容易になる事が実験で確認された。 In the conventional lithium ion battery using an electrolyte, the internal resistance value rapidly increases under a high voltage above a certain level.
Further, in the known all-solid-state battery, the contact surface between the electrode and the solid electrolyte was narrow and the interfacial resistance value was very large.
It has been experimentally confirmed that the all-solid-state battery of the present invention has a low internal resistance value even when a high voltage is applied, and it is easy to increase the output.

本発明の実施例１は、図１に示すごとく正極（集電体４と酸化物材料１），負極（集電体４と金属リチウム２）とボロン固体電解質３とから成る。この固体電解質の物質は従来色々な研究、提案が成されたが色々な欠点があり不十分なものだったが本発明者は多くの物質の実験により遂にボロンが最適である事を発見した。 As shown in FIG. 1, the first embodiment of the present invention comprises a positive electrode (collector 4 and oxide material 1), a negative electrode (collector 4 and metallic lithium 2), and a boron solid electrolyte 3. Although various studies and proposals have been made on this solid electrolyte substance, it has various drawbacks and is inadequate, but the present inventor has finally discovered that boron is optimal through experiments on many substances.

図２は本発明第２の実施例で微粒子を積層したバルク型全固体電池の概念図であり、正極性物質１，負極性物質２，ボロン固体電池電解質３、４は集電体である。
この実施例は電極層に電極活物装置多量に導入する事によって電池容量も大きく出来る特徴がある。 FIG. 2 is a conceptual diagram of a bulk type all-solid-state battery in which fine particles are laminated in the second embodiment of the present invention, and the positive electrode substance 1, the negative electrode substance 2, and the boron solid-state battery electrolytes 3 and 4 are current collectors.
This embodiment has a feature that the battery capacity can be increased by introducing a large amount of the electrode active device into the electrode layer.

図３は本発明の第３実施例で、単結晶固体ボロン電解質部材３の両側に正極ニッケル系酸化物材料１，負極金属リチウム２を製膜した概念図で、長寿命、安全性、信頼性のあるものである。 FIG. 3 is a third embodiment of the present invention, which is a conceptual diagram in which a positive electrode nickel-based oxide material 1 and a negative electrode metal lithium 2 are formed on both sides of a single crystal solid boron electrolyte member 3, and has a long life, safety, and reliability. There is something.

図４は本発明の第４実施例で薄膜型全固体電池の概念図である。薄膜型は気相法を用いて薄膜を積層するもので、基板５の上に集電体４、負極活物質２、ボロン固体電解質３、正極活物質１を設けたものであり、多サイクル充放電でも容量劣化が無くサイクル寿命に優れている事が確認された。 FIG. 4 is a conceptual diagram of a thin film type all-solid-state battery in the fourth embodiment of the present invention. The thin film type is a stack of thin films using the vapor phase method, in which a current collector 4, a negative electrode active material 2, a boron solid electrolyte 3, and a positive electrode active material 1 are provided on a substrate 5, and is charged in multiple cycles. It was confirmed that there was no capacity deterioration even with discharge and the cycle life was excellent.

本発明により発明の効果で述べたごとく、公知電より多大の優れた効果がある上、公知の全固体電池が解決出来なかった通り道の性能が高い材料は燃えやすい事、電極と電解液の界面抵抗が大きい事、量産技術が確立出来る事などすべて解決出来るのでEV向け高性能品など産業上の利用可能性が極めて大である。 As described in the effect of the present invention by the present invention, a material having a much superior effect to a known electric vehicle and having a high passage performance that a known all-solid-state battery could not solve is flammable, and the interface between the electrode and the electrolytic solution is easy to burn. Since it can solve all problems such as high resistance and establishment of mass production technology, it has extremely high industrial applicability such as high-performance products for EVs.

１ 正極活物質
２ 負極活物質
３ 本発明ボロン固体電解質
４ 集電体
５ 基盤 1 Positive electrode active material 2 Negative electrode active material 3 Boron solid electrolyte of the present invention 4 Collector 5 Base

Claims (2)

固体電解質に単体ボロンを含ませる、全固体電池であって、基板の上にすべての層が積層した集電体、負極活物質、ボロン固体電解質及び正極活物質を有することを特徴とする全固体電池。 It is an all-solid-state battery in which a single boron is contained in a solid electrolyte, and is characterized by having a current collector in which all layers are laminated on a substrate , a negative electrode active material, a boron solid electrolyte , and a positive electrode active material. All-solid-state battery. 請求項１に於て、集電体の負極及び正極が前記ボロン固体電解質に接触している事を特徴とする全固体電池。The all-solid-state battery according to claim 1, wherein the negative electrode and the positive electrode of the current collector are in contact with the boron solid electrolyte.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016219130A (en) 2015-05-15 2016-12-22 セイコーエプソン株式会社 Solid electrolyte battery, electrode assembly, composite solid electrolyte, and method for manufacturing solid electrolyte battery
JP2017188441A (en) 2016-03-31 2017-10-12 日立金属株式会社 Solid electrolyte for all-solid type lithium ion secondary battery, all-solid type lithium ion secondary battery using the same, and method for manufacturing solid electrolyte for all-solid type lithium ion secondary battery
JP2017224427A (en) 2016-06-14 2017-12-21 パナソニックＩｐマネジメント株式会社 Solid electrolyte and battery

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JP2012038433A (en) * 2010-08-03 2012-02-23 Geomatec Co Ltd Thin-film solid secondary battery and method of manufacturing thin-film solid secondary battery
JP2017004673A (en) * 2015-06-08 2017-01-05 セイコーエプソン株式会社 Electrode composite, method for manufacturing electrode composite, and lithium battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016219130A (en) 2015-05-15 2016-12-22 セイコーエプソン株式会社 Solid electrolyte battery, electrode assembly, composite solid electrolyte, and method for manufacturing solid electrolyte battery
JP2017188441A (en) 2016-03-31 2017-10-12 日立金属株式会社 Solid electrolyte for all-solid type lithium ion secondary battery, all-solid type lithium ion secondary battery using the same, and method for manufacturing solid electrolyte for all-solid type lithium ion secondary battery
JP2017224427A (en) 2016-06-14 2017-12-21 パナソニックＩｐマネジメント株式会社 Solid electrolyte and battery

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