JP2021502667A - 亜鉛−ヨウ化物フロー電池 - Google Patents
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Abstract
Description
Claims (8)
- 亜鉛−ヨウ化物シングルフロー電池又は亜鉛−ヨウ化物デュアルフロー電池に関連する亜鉛−ヨウ化物フロー電池であって、
前記シングルフロー電池は、負電極側電解液貯蔵タンクを備え、亜鉛−ヨウ化物シングルフロー電池は、シングル電池、又は直列に接続された3以上のシングル電池の回路に組み立てられたセルスタックを含み、
前記シングル電池は、正電極側エンドプレート、正電極側集電体、フローフレームを備えた正電極、隔膜、フローフレームを備えた負電極、負電極側集電体、及び負電極側エンドプレートを含み、
前記負電極側電解液貯蔵タンク内の電解液は、負電極側キャビティと前記負電極側電解液貯蔵タンクとの間で、ポンプによって循環させられ、ここで、前記隔膜と前記負電極側集電体との間のキャビティが前記負電極側キャビティと称され、前記負電極側キャビティには負電極側入口と負電極側出口が設けられており、
前記負電極側電解液貯蔵タンクは、前記負電極側入口及び出口に、それぞれ配管の負電極側入口及び出口を介して接続されており、
それと共に、前記配管の前記負電極側入口及び出口には、正電極側電解液の循環のための分岐がそれぞれ設けられており、
前記隔膜と前記正電極側集電体との間のキャビティは、正電極側キャビティと称され、前記正電極側キャビティには、正電極側入口と正電極側出口が設けられ、
前記配管の負電極側入口の分岐は、前記正電極側キャビティの前記正電極側入口に接続され、且つ前記配管の前記負電極側出口の分岐は前記正電極側キャビティの前記正電極側出口に接続されており、
前記デュアルフロー電池は、シングル電池、又は直列に接続された3以上のシングル電池の回路に組み立てられたスタックで構成され、
前記シングル電池は、正電極側エンドプレート、集電体、フローフレームを備えた正電極、隔膜、フローフレームを備えた負電極、集電体、及び負電極側エンドプレートを含み、
前記正電極側電解液貯蔵タンク内の前記正電極側電解液は、前記配管とポンプとによって前記正電極を通って流れ、
前記負電極側電解液貯蔵タンク内の前記負電極側電解液は、前記配管とポンプとによって前記負電極を通って流れ、
前記正電極側電解液と前記負電極側電解液とは同じであり、ヨウ化塩と亜鉛塩の混合水溶液であり、
前記隔膜は、イオン交換基を有さない多孔質膜又は複合膜である、
上記亜鉛−ヨウ化物フロー電池。 - 前記シングルフロー電池及び前記デュアルフロー電池の前記隔膜は、両方ともイオン交換基を有さない多孔質膜又は複合膜である、請求項1に記載の亜鉛−ヨウ化物フロー電池。
- 前記ヨウ化塩がCaI2、MgI2、KI、及びNaIのうちの1以上であり、且つ前記電解液中の前記ヨウ化塩のモル濃度が2〜8 mol/Lであり、
前記亜鉛塩は、ZnNO3、ZnBr2、ZnSO4、及びZnCl2のうちの1以上であり、前記電解液中の前記亜鉛塩のモル濃度が1〜4 mol/Lであり、
前記電解液中のヨウ化物と亜鉛のモル比は、好ましくは2:1、である、ここで、亜鉛塩は、好ましくはZnBr2、であり、ヨウ化塩は、好ましくはKI、である、
請求項1に記載の亜鉛−ヨウ化物フロー電池。 - 前記電解質溶液は支持電解質を含み、且つシングルフロー電池の前記支持電解質はKCl、KBr、及びNaClのうちの1以上であり、
デュアルフロー電池の前記電解質は、KCl、K2SO4、KBrのうちの1以上であり、
この濃度は1〜2 mol/Lであり、且つ前記支持電解質は、好ましくはKCl、である、
請求項1又は3に記載の亜鉛−ヨウ化物フロー電池。 - 前記隔膜は、ポリエーテルスルホン(PES)、ポリエチレン(PE)、ポリプロピレン(PP)、ポリスルホン(PS)、ポリエーテルイミド(PEI)、及びポリフッ化ビニリデン(PVDF)のうちの1以上を含んでいる、イオン交換基を有さない多孔質膜であり、
前記隔膜は多孔質膜であり、且つシングルフロー電池の厚さは100〜1000μmであり、
前記デュアルフロー電池に使用される隔膜の厚さは、150〜1000μm、好ましくは500〜1000μm、であり、
前記多孔質膜の材料は、好ましくはPE、PP、であり、孔径は1〜10nmであり、且つ多孔度は20%〜70%である、
請求項1又は2に記載の亜鉛−ヨウ化物フロー電池。 - 前記複合膜は、その表面に緻密なポリマー層で被覆されたイオン交換基を有さない多孔質膜であり、ポリマー層の材料は、ポリベンゾイミダゾール(PBI)、ナフィオン樹脂、及びポリテトラフルオロエチレン(PTFE)のうちの1以上、好ましくはナフィオン樹脂、であり、被覆の厚さは1〜10μmである、請求項1又は2に記載の亜鉛−ヨウ化物フロー電池。
- 充電中、前記正電極側電解液中のI−が酸化反応を受けて、I3 −及びI2のうちの1つ以上、好ましくはI2、を生成し、前記負電極上でZn2+は還元反応を受けて、Znを形成し、
放電中、I3 −又はI2は還元反応を受けて前記正電極でI−を生成し、Znは酸化反応を受けてZn2+を生成する、
ことを特徴とする、請求項1に記載の亜鉛−ヨウ化物フロー電池。 - 前記電極の材料が、カーボンフェルト、グラファイトプレート、金属プレート、又はカーボンクロスのうちの1つ、好ましくはカーボンフェルト、である、請求項1に記載の亜鉛−ヨウ化物フロー電池。
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CN201711091359.4A CN109755604B (zh) | 2017-11-08 | 2017-11-08 | 一种中性锌碘液流电池 |
CN201711090856.2 | 2017-11-08 | ||
CN201711090856.2A CN109755620B (zh) | 2017-11-08 | 2017-11-08 | 一种锌碘液流电池 |
CN201711091359.4 | 2017-11-08 | ||
PCT/CN2018/112535 WO2019091304A1 (zh) | 2017-11-08 | 2018-10-30 | 一种锌碘液流电池 |
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EP (1) | EP3709421A4 (ja) |
JP (1) | JP7035181B2 (ja) |
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CN114665135B (zh) * | 2022-01-30 | 2023-05-26 | 电子科技大学 | 一种高电压效率的液流电池体系 |
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US20150147673A1 (en) * | 2013-11-25 | 2015-05-28 | Battelle Memorial Institute | High-Energy-Density, Aqueous, Metal-Polyiodide Redox Flow Batteries |
WO2018207367A1 (ja) * | 2017-05-12 | 2018-11-15 | 日立化成株式会社 | 水溶液系二次電池、水溶液系二次電池の充放電方法、水溶液系二次電池用電解液、フロー電池システム及び発電システム |
JP2019053869A (ja) * | 2017-09-14 | 2019-04-04 | 日立化成株式会社 | 二次電池、二次電池用電解液及び二次電池用電解液の製造方法 |
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CN105742656B (zh) * | 2014-12-11 | 2018-10-02 | 中国科学院大连化学物理研究所 | 一种锌碘液流电池 |
EP3284129B1 (en) * | 2015-04-14 | 2020-09-16 | Lockheed Martin Energy, LLC | Flow battery balancing cells having a bipolar membrane for simultaneous modification of a negative electrolyte solution and a positive electrolyte solution |
KR101719685B1 (ko) | 2015-08-12 | 2017-03-24 | 롯데케미칼 주식회사 | 레독스 흐름 전지의 충방전 제어 방법 |
WO2018016591A1 (ja) | 2016-07-21 | 2018-01-25 | 日立化成株式会社 | 二次電池、二次電池システム、正極電解液及び発電システム |
CN206022528U (zh) * | 2016-09-21 | 2017-03-15 | 中国科学院大连化学物理研究所 | 一种锌溴单液流电池结构 |
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US20150147673A1 (en) * | 2013-11-25 | 2015-05-28 | Battelle Memorial Institute | High-Energy-Density, Aqueous, Metal-Polyiodide Redox Flow Batteries |
WO2018207367A1 (ja) * | 2017-05-12 | 2018-11-15 | 日立化成株式会社 | 水溶液系二次電池、水溶液系二次電池の充放電方法、水溶液系二次電池用電解液、フロー電池システム及び発電システム |
JP2019053869A (ja) * | 2017-09-14 | 2019-04-04 | 日立化成株式会社 | 二次電池、二次電池用電解液及び二次電池用電解液の製造方法 |
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AU2018364032B2 (en) | 2021-08-12 |
EP3709421A1 (en) | 2020-09-16 |
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