JP4238369B2 - イオン伝導性微粒子およびその製造方法、ならびにそれを用いた電気化学デバイス - Google Patents
イオン伝導性微粒子およびその製造方法、ならびにそれを用いた電気化学デバイス Download PDFInfo
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- JP4238369B2 JP4238369B2 JP2005261191A JP2005261191A JP4238369B2 JP 4238369 B2 JP4238369 B2 JP 4238369B2 JP 2005261191 A JP2005261191 A JP 2005261191A JP 2005261191 A JP2005261191 A JP 2005261191A JP 4238369 B2 JP4238369 B2 JP 4238369B2
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Description
ヘングレンら(A. Henglein et al.)の論文(「Photochemistry of Colloidal Semiconductors 30. Reactions and Fluorescence of AgI and AgI-Ag2S Colloids」、Ber. Bunsenges. Phys. Chem. 93 p593-599、1989年)
イオン伝導性微粒子を製造するための本発明の方法は、有機分子を含む水溶液中で、金属イオンとヨウ化物イオン(I-)とを反応させることによって、ヨウ化金属の微粒子を複数形成する工程(工程(i))を含む。金属イオンは、銀イオンまたは銅イオンである。金属イオンが銀イオンである場合には、ヨウ化銀(AgI)の微粒子が形成される。金属イオンが銅イオンである場合には、ヨウ化銅(CuI)の微粒子が形成される。
本発明のヨウ化銀微粒子は、75℃で測定したときのイオン伝導度が1×10-3Scm-1以上である。この微粒子の粒径は、たとえば20nm以下である。
本発明の電気化学デバイスは、本発明の微粒子(ヨウ化銀微粒子またはヨウ化銅微粒子)を含む。この電気化学デバイスでは、本発明の微粒子の少なくとも一部が超イオン伝導相の状態(ヨウ化銀の場合にはα相の状態)で使用される。
以下に、ヨウ化銀微粒子を作製して評価した一例について説明する。
以下に、ヨウ化銅微粒子を製造した一例について説明する。
Claims (8)
- イオン伝導性微粒子の製造方法であって、
(i)ヨウ化銀の微粒子の凝集を防止する有機分子を含む水溶液中で、銀イオンとヨウ化物イオンとを反応させることによって、ヨウ化銀の微粒子を複数形成する工程と、
(ii)前記微粒子の少なくとも一部が超イオン伝導相になるように前記微粒子を加熱する工程とを含む、イオン伝導性微粒子の製造方法。 - 複数の前記微粒子は、粒径が20nm以下である微粒子を含む請求項1に記載の製造方法。
- 前記(ii)の工程において前記微粒子を150℃以上の温度に加熱する工程を含む請求項1または2に記載の製造方法。
- 前記有機分子が、疎水性基と親水性基とを備える両親媒性の有機分子である請求項1〜3のいずれか1項に記載の製造方法。
- 前記有機分子が、ポリビニルピロリドン、ポリビニルアルコール、ポリエチレンオキシド、ポリプロピレンオキシド、オクタンチオール、デカンチオール、およびオクタデカンチオールのいずれかである請求項1〜3のいずれか1項に記載の製造方法。
- 75℃で測定したときのイオン伝導度が1×10-3Scm-1以上であるヨウ化銀微粒子。
- 粒径が20nm以下である請求項6に記載のヨウ化銀微粒子。
- 請求項6または7に記載のヨウ化銀微粒子を固体電解質として含む全固体型電池。
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JP2005261191A JP4238369B2 (ja) | 2005-09-08 | 2005-09-08 | イオン伝導性微粒子およびその製造方法、ならびにそれを用いた電気化学デバイス |
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JP4238369B2 true JP4238369B2 (ja) | 2009-03-18 |
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US20090092538A1 (en) | 2007-10-08 | 2009-04-09 | Amit Khanolkar | Methods for forming stabilized metal salt particles |
CN105776315B (zh) * | 2016-03-30 | 2017-07-04 | 淮北师范大学 | 一种AgI纳米粉体的制备方法 |
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