JP6822844B2 - 電気エネルギ蓄積素子並びにその製造方法及び製造装置 - Google Patents
電気エネルギ蓄積素子並びにその製造方法及び製造装置 Download PDFInfo
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 10
- 239000010405 anode material Substances 0.000 claims description 10
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 9
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- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
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- 229910009511 Li1.5Al0.5Ge1.5(PO4)3 Inorganic materials 0.000 claims description 3
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- 239000006182 cathode active material Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
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- 229910000664 lithium aluminum titanium phosphates (LATP) Inorganic materials 0.000 description 1
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- 238000010297 mechanical methods and process Methods 0.000 description 1
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- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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Description
Claims (10)
- それぞれ電極としてのカソード及びアノードと電解質とから形成される複数の電気化学セルが1つずつ積層されると共に、片側が導電性材料のトッププレートで閉じられる一方、他の側が導電性材料のベースプレートで閉じられた電気エネルギ蓄積素子であって、
前記ベースプレートは、カソード又はアノードでコーティングされ、
前記トッププレートは、アノード又はカソードによって補完的にコーティングされ、
前記アノード及び前記カソードは、アルミニウム、銅、鋼、又は導電性プラスチックを含む導電性キャリアフィルムの両面にそれぞれ配置されると共に、該キャリアフィルムには電極材料が設けられていない外周マージン部が設けられ、該外周マージン部は、シーリング接着剤で密封するように付近の電気化学セル同士を接続するものであって、
前記アノードは、スピネル構造のチタン酸リチウム(LTO)から形成され、
前記カソードは、スピネル構造のリチウムニッケルマンガン(LNMO)又はオリビン構造のリン酸リチウム(LP)から形成され、
前記電解質は、前記電極の1つ又は両方に適用されるセパレータ層に付加されるゲル状電解質である、又は固体電解質であり、
前記アノードは、LTOとしてのLi4Ti5O12から形成され、
前記カソードは、LNMOとしてのLiNi0.5Mn1.5O4、又はLiCoPO4若しくはLiNiPO4としてのリン酸リチウムから形成され、
前記電気化学セルの前記キャリアフィルムは、それぞれ電気的に絶縁されたワイヤに接続され、当該ワイヤはシーリング接着材を介して監視モジュールに導かれ、各層の電圧監視、電荷補償、及び/又は電荷適合を実行する
ことを特徴とする電気エネルギ蓄積素子。 - 前記電解質は、
リチウムイオン伝導性の塩、
高分子電解質、イオン化アニオン及び/若しくはカチオン群のポリマー、
イオン溶液、又は
結晶性イオン伝導体としてのLi7P3S11若しくはLi1.5Al0.5Ge1.5(PO4)3 により形成され、且つ/あるいは、
粒状で有機バインダを用いるAl2O3 又はリチウムイオン伝導性ガラスによりセパレータ層が形成される
ことを特徴とする請求項1に記載の電気エネルギ蓄積素子。 - 前記電解質が、ポリエチレンオキシド(PEO)、ポリフッ化ビニリデン(PVDF)、アクリル酸塩、若しくはイミジンで形成される高分子マトリクスの有機カーボネートに設けられたLiPF6、LiTFSI、又は LiClO4から形成される、あるいは、
高分子電解質としての、N‐アルキル‐N‐メチルピロロジニウムビス(トリフルオロメタンスルホニル)イミド(PYR14TFSI)及びリチウムイオン伝導性の塩としてのLiTFSIから形成される
ことを特徴とする請求項1又は2に記載の電気エネルギ蓄積素子。 - インターフェースモジュール、ジャケットモジュール、及び/又は温度制御装置若しくは冷却モジュールを備えることを特徴とする請求項1又は2に記載の電気エネルギ蓄積素子。
- 前記セパレータ層に、ポリフッ化ビニリデン(PVDF)、スチレンブタジエンゴム(SBR)、ポリビニルアルコール(PVA)、又はカルボキシメチルセルロース(CMC)が含まれることを特徴とする請求項1から4のいずれか1項に記載の電気エネルギ蓄積素子。
- 請求項1から5のいずれか1項に記載の電気エネルギ蓄積素子の製造方法であって、
キャリアフィルムの両面のうち、一方をアノード材料でコーティングし、他方をカソード材料でコーティングすることによって、対応する電極材料が設けられていない外周マージン部を残す、又は、該マージン部から前記電極材料を除去し、
前記2つの電極材料のうち少なくとも一方の電極材料をセパレータ層でコーティングし、さらにゲル状電解質の電解質材料でコーティングする、又は、
当該一方の電極材料を直接固形電解質材料でコーティングし、
各電気化学セルを形成する個々の素子は、分離処理によって連続的に得られ、これを1つずつ積層することにより、カソード及びアノードが交互に上向きになるように配置すると共に、最下段の電気化学セルを、対応する補完電極と共にカソード又はアノードでコーティングされたベースプレート上に設ける際、前記補完電極を、該補完電極の方向を向く前記ベースプレート上に形成された前記電極の向きに配置し、
前記電気化学セルを所望数積層した後、最上段の電気化学セルの電極に対する補完電極が設けられるトッププレートを前記最上段の電気化学セルの上に配置し、
電極材料の設けられていない前記外周マージン部に、シーリング接着剤を塗布して前記電気化学セルを外気に対して閉じる
ことを特徴とし、
前記アノードは、LTOとしてのLi4Ti5O12から形成され、
前記カソードは、LNMOとしてのLiNi0.5Mn1.5O4、又はLiCoPO4若しくはLiNiPO4としてのリン酸リチウムから形成され、
前記電気化学セルを外気に対して閉じる処理は、シーリング接着剤と、電極材料の設けられていない前記外周マージン部に設けられたセパレータ要素と、により達成され、
前記電気化学セルの前記キャリアフィルムは、それぞれ電気的に絶縁されたワイヤに接続され、当該ワイヤはシーリング接着材を介して監視モジュールに導かれる
ことを特徴とする。 - 前記電極、前記セパレータ層、及び/又は前記電解質は、ドクターブレード、印刷、スプレー、除去、粉末コーティング、又は静電処理により形成することを特徴とする請求項6に記載の方法。
- 請求項7に係る方法により形成された前記電極をカレンダ処理により小型化することを特徴とする方法。
- 前記電気化学セルとベースプレートとトッププレートの組立及び積層処理は、真空状況下又は不活性環境雰囲気の中で行われることを特徴とする請求項6から8のいずれか1項に記載の方法。
- 請求項7又は8に記載の処理が、真空状況下又は不活性環境雰囲気の中で行われることを特徴とする方法。
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