JP7468419B2 - イオン伝導度評価装置及びイオン伝導度評価方法並びに電解液設計装置 - Google Patents
イオン伝導度評価装置及びイオン伝導度評価方法並びに電解液設計装置 Download PDFInfo
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- JP7468419B2 JP7468419B2 JP2021048144A JP2021048144A JP7468419B2 JP 7468419 B2 JP7468419 B2 JP 7468419B2 JP 2021048144 A JP2021048144 A JP 2021048144A JP 2021048144 A JP2021048144 A JP 2021048144A JP 7468419 B2 JP7468419 B2 JP 7468419B2
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- ionic conductivity
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- 238000011156 evaluation Methods 0.000 title claims description 36
- 239000003792 electrolyte Substances 0.000 title claims description 25
- 238000013461 design Methods 0.000 title claims description 8
- 150000003839 salts Chemical class 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 27
- 238000000329 molecular dynamics simulation Methods 0.000 claims description 27
- 150000002500 ions Chemical class 0.000 description 20
- 238000004364 calculation method Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 13
- 238000009835 boiling Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 8
- 239000005486 organic electrolyte Substances 0.000 description 7
- 229910013870 LiPF 6 Inorganic materials 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 5
- 159000000002 lithium salts Chemical class 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- 229910001290 LiPF6 Inorganic materials 0.000 description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 4
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 4
- 238000005315 distribution function Methods 0.000 description 4
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000004057 DFT-B3LYP calculation Methods 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910006710 Li—P Inorganic materials 0.000 description 1
- 241000321453 Paranthias colonus Species 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005421 electrostatic potential Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000012417 linear regression Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005307 time correlation function Methods 0.000 description 1
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Description
に代入することによって電解液のイオン伝導度σを求めることを特徴とするイオン伝導度評価装置である。
に代入することによって電解液のイオン伝導度σを求めることを特徴とするイオン伝導度評価方法である。
図2は、数式(3)で表されるイオン伝導度評価式におけるパラメータA’、s、tを決定する方法を示すフローチャートである。
Claims (3)
- 分子動力学シミュレーションを適用して第1種類のイオンと第2種類のイオンの間の距離を推定し、当該距離に基づいて前記第1種類のイオンと前記第2種類のイオンから生成される塩について塩会合度αを算出し、
粘性係数η、塩会合度α、イオンの濃度ciを、
に代入し、
パラメータA’、s,tは、イオン伝導度σの実測値に対してフィッティングを行うことによって設定することによって電解液のイオン伝導度σを求めることを特徴とするイオン伝導度評価装置。 - 請求項1に記載のイオン伝導度評価装置において求められたイオン伝導度σに応じて電解液を設計する電解液設計装置。
- 分子動力学シミュレーションを適用して第1種類のイオンと第2種類のイオンの間の距離を推定し、当該距離に基づいて前記第1種類のイオンと前記第2種類のイオンから生成される塩について塩会合度αを算出し、
粘性係数η、塩会合度α、イオンの濃度ciを
に代入し、
パラメータA’、s,tは、イオン伝導度σの実測値に対してフィッティングを行うことによって設定することによって電解液のイオン伝導度σを求めることを特徴とするイオン伝導度評価方法。
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JP7468419B2 true JP7468419B2 (ja) | 2024-04-16 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015079747A (ja) | 2013-09-13 | 2015-04-23 | 株式会社東芝 | 非水電解質二次電池および電池パック |
JP2019160719A (ja) | 2018-03-16 | 2019-09-19 | トヨタ自動車株式会社 | 電解液およびリチウムイオン電池 |
US20200321080A1 (en) | 2019-04-05 | 2020-10-08 | Tata Consultancy Services Limited | Method and system for in-silico optimization and design of electrolytes |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH07169504A (ja) * | 1993-12-14 | 1995-07-04 | Matsushita Electric Ind Co Ltd | 非水電解液二次電池 |
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- 2021-03-23 JP JP2021048144A patent/JP7468419B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015079747A (ja) | 2013-09-13 | 2015-04-23 | 株式会社東芝 | 非水電解質二次電池および電池パック |
JP2019160719A (ja) | 2018-03-16 | 2019-09-19 | トヨタ自動車株式会社 | 電解液およびリチウムイオン電池 |
US20200321080A1 (en) | 2019-04-05 | 2020-10-08 | Tata Consultancy Services Limited | Method and system for in-silico optimization and design of electrolytes |
Non-Patent Citations (2)
Title |
---|
E. R. LOGAN et al.,"A Study of the Physical Properties of Li-Ion Battery Electrolytes Containing Esters",Journal of The Electrochemical Society,2018年,Vol. 165, No. 2,p.A21-A30,DOI: 10.1149/2.0271802jes |
Kazutaka KONDO et al.,"Conductivity and Solvation of Li+ Ions of LiPF6 in Propylene Carbonate Solutions",The Journal of Physical Chemistry B,2000年04月27日,Vol. 104, No. 20,p.5040-5044,DOI: 10.1021/jp000142f |
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