In Situ Formation of Li2SiO3-Li-NaCl Interface on Si and Its Effect on Hydrogen Evolution
作者:Liu, ML (Liu, Mili) [1] ; Liu, JW (Liu, Jiangwen) [1] ; Sun, JY (Sun, Jiangyong) [3] ; Zhu, YY (Zhu, Yongyang) [2] ; Chen, K (Chen, Kang) [1] ; Zhong, H (Zhong, Hao) [1] ; Ouyang, LZ (Ouyang, Liuzhang) [1] , [4] ; Liu, H (Liu, Hui) [1] , [5]
(由 Clarivate 提供)
卷15
期17
页20917-20924
DOI10.1021/acsami.2c23285
出版时间MAY 3 2023
在线发表APR 2023
已索引2023-05-12
文献类型Article
摘要
Silicon has emerged as a competitive candidate for hydrolytic hydrogen production due to its high theoretical hydrogen yield, low cost, and on-demand availability. However, the hydrolysis reaction is extremely restrained by passivated SiO2, including the original one on the Si surface and the generated one during hydrolysis, and almost no hydrogen is produced in pure water. Herein, the original SiO2 surface has been effectively removed by milling micro-Si mixed with a small amount of Li metal and NaCl. An artificial soluble interface on Si has been established containing Li2SiO3, Li, and NaCl. Once micro-Si is placed into water, fresh Si surface can be exposed and a weak LiOH solution can be generated due to the fast dissolution of the interface layer, resulting in the rapid liberation of hydrogen gas. Accordingly, the modified micro-Si displays a significantly enhanced hydrogen production in pure water at 30 degrees C (1213 mL g-1 H2 within 3.0 h), which is 2.0 and 4.7 times higher than that observed for ball-milled Si and raw Si in 0.06 M LiOH solution, respectively. In addition, it also exhibited an outstanding operation compatibility for practical uses. This work has proposed a green, effective, and scalable strategy to promote hydrogen production from the hydrolysis of Si-based systems.
关键词
作者关键词micro-Sipassivated SiO2hydrolytic hydrogen productionSi oxidation
Keywords PlusHYDROLYSISGENERATIONWATERNANOPARTICLESPOWDERH-2
作者信息
通讯作者地址
Ouyang, Liuzhang;
Liu, Hui
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
所属机构
South China University of Technology
通讯作者地址
Sun, Jiangyong
(通讯作者)
Guangdong Acad Sci, Inst New Mat, Guangzhou 510651, Peoples R China
通讯作者地址
Ouyang, Liuzhang
(通讯作者)
Guangdong Engn Technol Res Ctr Adv Energy Storage, Guangzhou 510641, Peoples R China
通讯作者地址
Liu, Hui
(通讯作者)
Hunan Agr Univ, Sch Chem & Mat Sci, Changsha 410128, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China
2 Guangdong Acad Sci, Inst Resources Utilizat & Rare Earth Dev, Guangzhou 510650, Peoples R China
3 Guangdong Acad Sci, Inst New Mat, Guangzhou 510651, Peoples R China
4 Guangdong Engn Technol Res Ctr Adv Energy Storage, Guangzhou 510641, Peoples R China
5 Hunan Agr Univ, Sch Chem & Mat Sci, Changsha 410128, Peoples R China
电子邮件地址sunjiangyong@gimp.gd.cnmeouyang@scut.edu.cnliu.hui@hunau.edu.cn
类别/分类
研究方向Science & Technology - Other TopicsMaterials Science
Web of Science 类别Nanoscience & NanotechnologyMaterials Science, Multidisciplinary