JP6923225B2 - 酸素還元及び発生反応用の触媒及びその製造方法 - Google Patents
酸素還元及び発生反応用の触媒及びその製造方法 Download PDFInfo
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- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/04—Sulfides
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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Description
前記Ni(OH)2ナノシート前駆体と硫黄(S)を反応させて、単結晶構造であって{200}結晶面が露出したNiS2ナノシートを合成するステップとを含む。
図5のSEM画像は、前駆体は、薄いシート状の2次元構造を有し(図5の左側)、NiS2触媒は、前駆体とほぼ同様のシート状の2次元構造で形成されることを示す。
Claims (10)
- NiS2(硫化ニッケル)が2次元構造で相互に架橋および配向され、単結晶構造であって{200}結晶面が露出したNiS2ナノシート(nanosheet)からなる、酸素還元及び酸素発生反応用の触媒。
- 前記酸素還元及び酸素発生反応用の触媒はリチウム空気電池の正極用である、請求項1に記載の酸素還元及び酸素発生反応用の触媒。
- 複数のNi(OH)2(水酸化ニッケル)が2次元構造で相互に結合配列され、単結晶構造であって{001}結晶面が露出したNi(OH)2ナノシート前駆体を合成するステップと、
前記Ni(OH)2ナノシート前駆体と硫黄(S)を反応させて、単結晶構造であって{200}結晶面が露出したNiS2ナノシートを合成するステップとを含む、酸素還元及び酸素発生反応用の触媒の製造方法。 - 前記Ni(OH)2ナノシート前駆体を合成するステップは、
酢酸ニッケル(nickel acetate)が脱イオン水に溶解された溶液に、アンモニア水溶液を添加して混合溶液を製造するステップと、
前記混合溶液を水熱合成するステップとを含む、請求項3に記載の酸素還元及び酸素発生反応用の触媒の製造方法。 - 前記水熱合成するステップの後に、洗浄液で洗浄し、乾燥するステップをさらに含む、請求項4に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
- 前記混合溶液を製造するステップにおいて、前記混合溶液のpHが9〜11になるように前記アンモニア水溶液を添加する、請求項4に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
- 前記水熱合成するステップは、160〜210℃で行われる、請求項4に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
- 前記NiS2ナノシートを合成するステップは、前記硫黄粉末を熱処理して、気化した前記硫黄と前記Ni(OH)2ナノシート前駆体が反応する、請求項3に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
- 前記NiS2ナノシートを合成するステップにおいて、前記Ni(OH)2ナノシート前駆体と前記硫黄粉末とのモル比率(molar ratio)は1:5〜25である、請求項8に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
- 前記熱処理は350〜550℃で行われる、請求項8に記載の酸素還元及び酸素発生反応用の触媒の製造方法。
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| CN113130924B (zh) * | 2021-04-20 | 2022-09-06 | 中国科学技术大学 | 一种金属空气电池催化剂、其制备方法及应用 |
| CN113564617A (zh) * | 2021-07-29 | 2021-10-29 | 先进能源产业研究院(广州)有限公司 | 一种双功能电催化剂的制备方法 |
| KR102631072B1 (ko) | 2021-10-14 | 2024-01-30 | 전남대학교산학협력단 | 산소 발생 또는 산소 환원용 전기 촉매의 제조방법 및 이로부터 제조된 전기 촉매 |
| CN114551814B (zh) * | 2022-02-23 | 2023-05-09 | 鲁东大学 | 一种泡沫镍原位生长硫化镍电极材料的沙浴回流制备方法 |
| CN114620783A (zh) * | 2022-04-24 | 2022-06-14 | 上海电力大学 | 一种三维结构Ni(OH)2氧气析出电催化剂及其制备方法 |
| CN114824180B (zh) * | 2022-05-10 | 2023-12-01 | 北京航空航天大学 | 一种表面生长有异质结纳米片层的泡沫镍及其制备方法和应用 |
| CN114984979B (zh) * | 2022-06-20 | 2024-04-26 | 武汉工程大学 | 一种高性能NiS2@C纳米材料及其制备方法和应用 |
| CN115548283B (zh) * | 2022-09-01 | 2024-04-19 | 河北工业大学 | 一种NiS2@C/HC电极材料的制备方法及其应用 |
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