JP2022515440A - 固体電解質を有する高エネルギー密度の溶融リチウム‐硫黄及びリチウム‐セレンバッテリー - Google Patents
固体電解質を有する高エネルギー密度の溶融リチウム‐硫黄及びリチウム‐セレンバッテリー Download PDFInfo
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- 239000007784 solid electrolyte Substances 0.000 title claims abstract description 41
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 title abstract description 6
- ZVSWQJGHNTUXDX-UHFFFAOYSA-N lambda1-selanyllithium Chemical compound [Se].[Li] ZVSWQJGHNTUXDX-UHFFFAOYSA-N 0.000 title abstract description 4
- 239000011669 selenium Substances 0.000 claims abstract description 71
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 50
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 42
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 40
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 22
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011593 sulfur Substances 0.000 claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 claims description 30
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 29
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
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- 229910000733 Li alloy Inorganic materials 0.000 claims description 10
- 239000001989 lithium alloy Substances 0.000 claims description 10
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- 229910010617 Li6.5La3Ta0.5Zr1.5O12 Inorganic materials 0.000 claims description 2
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 229910000881 Cu alloy Inorganic materials 0.000 description 2
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- RYCFIOKEHOTMPK-UHFFFAOYSA-N 1,3-dioxolan-2-one;propyl hydrogen carbonate Chemical compound O=C1OCCO1.CCCOC(O)=O RYCFIOKEHOTMPK-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 238000007088 Archimedes method Methods 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- 229910018133 Li 2 S-SiS 2 Inorganic materials 0.000 description 1
- 229910008266 Li-Ag Inorganic materials 0.000 description 1
- 229910007857 Li-Al Inorganic materials 0.000 description 1
- 229910008365 Li-Sn Inorganic materials 0.000 description 1
- 229910009274 Li1.4Al0.4Ti1.6 (PO4)3 Inorganic materials 0.000 description 1
- 229910009290 Li2S-GeS2-P2S5 Inorganic materials 0.000 description 1
- 229910009110 Li2S—GeS2—P2S5 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
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- 229910013439 LiZr Inorganic materials 0.000 description 1
- 229910008445 Li—Ag Inorganic materials 0.000 description 1
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- 229910006759 Li—Sn Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000000806 elastomer Substances 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
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- 238000007654 immersion Methods 0.000 description 1
- 238000001566 impedance spectroscopy Methods 0.000 description 1
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- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
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- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
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- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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Abstract
Description
[例]
[例1]
高エネルギー密度を有する固体電解質ベースの溶融リチウム‐硫黄及びリチウム‐セレンバッテリー
[方法]
ガーネット型LLZTOチューブの作製及び特性評価
Li||LLZTO||S及びLi||LLZTO||Se電池のアセンブリ及び電気化学的測定
溶融Li-Se及びLi-Sバッテリーのエネルギー密度の計算
WV1=2800*(VS+VLi)/(V1+Vtube+V2)=1403 Wh L-1
Wm1=2600*(MS+MLi)/(MS/0.9+Mtube+MLi)=800 Wh kg-1
である。
結果及び分析
Claims (23)
- リチウム金属又はリチウム合金を含むアノードと、
硫黄、セレン又はそれらの混合物を含むカソードと、
前記アノードと前記カソードとの間に位置付けられた固体電解質であって、リチウムイオンを伝導できる固体電解質と
を備える、電気化学電池。 - 動作温度において、前記リチウム金属又は前記リチウム合金は溶融され、前記硫黄又はセレンは溶融され、前記固体電解質は固体のままである、請求項1に記載の電気化学電池。
- 前記固体電解質は、リチウムイオン伝導性酸化物、リチウムイオン伝導性リン酸塩、リチウムイオン伝導性硫化物、又はそれらの組み合わせを有する、請求項1に記載の電気化学電池。
- 前記固体電解質は、リチウムイオン伝導性酸化物を有する、請求項3に記載の電気化学電池。
- 前記リチウムイオン伝導性酸化物は、ガーネット型酸化物、リチウム超イオン伝導体(LISICON)型酸化物、ペロブスカイト型酸化物、又はそれらの組み合わせを含む、請求項4に記載の電気化学電池。
- 前記リチウムイオン伝導性酸化物は、ガーネット型酸化物を含む、請求項4に記載の電気化学電池。
- 前記ガーネット型酸化物は、タンタルドープLi7La3Zr2O12を含む、請求項6に記載の電気化学電池。
- 前記ガーネット型酸化物は、Li7-xLa3Zr2-xTaxO12を含み、xは0.1から1.0である、請求項6に記載の電気化学電池。
- 前記ガーネット型酸化物は、Li7-xLa3Zr2-xTaxO12を含み、xは0.4から0.6である、請求項6に記載の電気化学電池。
- 前記ガーネット型酸化物は、Li6.4La3Ta0.6Zr1.4O12、Li6.5La3Ta0.5Zr1.5O12、又はLi6.6La3Ta0.4Zr1.6O12を含む、請求項6に記載の電気化学電池。
- 前記カソードと電気的に接続されたカソード集電体をさらに備える、請求項1から10のいずれか一項に記載の電気化学電池。
- 前記カソード集電体はステンレススティールを有する、請求項11に記載の電気化学電池。
- 前記アノードと電気的に接続されたアノード集電体をさらに備える、請求項11に記載の電気化学電池。
- 前記アノード集電体はステンレススティールを有する、請求項13に記載の電気化学電池。
- 前記固体電解質は、チューブの形であり、前記カソードは、前記チューブ内に配置される、請求項11に記載の電気化学電池。
- 前記固体電解質は、95%から99.9%の相対密度を有する、請求項11に記載の電気化学電池。
- 前記カソード集電体は、前記チューブの外部にあるシリンダの形であり、前記カソードは、前記チューブと前記シリンダとの間に配置される、請求項15に記載の電気化学電池。
- 前記電気化学電池はさらに、前記アノードと前記カソードとを保持するように構成されているシールを備える、請求項11に記載の電気化学電池。
- 前記電気化学電池は、120℃から600℃の範囲の温度で動作するように構成されている、請求項1から18のいずれか一項に記載の電気化学電池。
- 前記カソードはさらに、炭素伝導性添加剤を含む、請求項1から19のいずれか一項に記載の電気化学電池。
- 前記硫黄又はセレンと炭素とが3:1から20:1のモル比(m(S又はSe):m(C))で混合される、請求項20に記載の電気化学電池。
- 請求項1から21のいずれか一項に記載の電気化学電池のうち1又は複数を含む、電力モジュール。
- 前記電気化学電池のうち前記1又は複数を加熱するように構成された熱源をさらに備える、請求項22に記載の電力モジュール。
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