Characterizations of composite NaNH 2-NaBH 4 hydrogen storage materials synthesized via ball milling

Chuan Wu; Ying Bai; Jian Hu Yang; Feng Wu; Fei Long

doi:10.1016/j.ijhydene.2011.03.171

Characterizations of composite NaNH ₂-NaBH ₄ hydrogen storage materials synthesized via ball milling

Chuan Wu^*, Ying Bai, Jian Hu Yang, Feng Wu, Fei Long

^*此作品的通讯作者

材料学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

25 引用（Scopus）

摘要

Composite NaNH ₂-NaBH ₄ (molar ratio of 2/1) hydrogen storage materials are prepared by a ball milling method with various ball milling times. The compositions and hydrogen generation characteristics are investigated by means of X-ray diffraction (XRD) and thermo gravimetric- differential thermal analysis (TG-DTA). The structural characteristics imply that ball milling produces a new phase of Na ₃(NH ₂) ₂BH ₄, and mechanical energy accumulated in the ball milling process may be responsible for the phase change of Na ₃(NH ₂) ₂BH ₄. TG-DTA demonstrates that the phase change temperature of the composite NaNH ₂-NaBH ₄ (2/1) ball milled for 16 h is 141.8 °C, and the melting point is 197.3 °C; below 400 °C, composite hydrogen storage material is mainly decomposed to give hydrogen and Na ₃BN ₂; while above 400 °C, the previous by-product Na ₃BN ₂ continues to decompose so as to give metal Na gradually.

源语言	英语
页（从-至）	889-893
页数	5
期刊	International Journal of Hydrogen Energy
卷	37
期	1
DOI	https://doi.org/10.1016/j.ijhydene.2011.03.171
出版状态	已出版 - 1月 2012

联合国可持续发展目标

此成果有助于实现下列可持续发展目标：

访问文件

10.1016/j.ijhydene.2011.03.171

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{19146bfe86f44fb5be56370be552f6ef,

title = "Characterizations of composite NaNH 2-NaBH 4 hydrogen storage materials synthesized via ball milling",

abstract = "Composite NaNH 2-NaBH 4 (molar ratio of 2/1) hydrogen storage materials are prepared by a ball milling method with various ball milling times. The compositions and hydrogen generation characteristics are investigated by means of X-ray diffraction (XRD) and thermo gravimetric- differential thermal analysis (TG-DTA). The structural characteristics imply that ball milling produces a new phase of Na 3(NH 2) 2BH 4, and mechanical energy accumulated in the ball milling process may be responsible for the phase change of Na 3(NH 2) 2BH 4. TG-DTA demonstrates that the phase change temperature of the composite NaNH 2-NaBH 4 (2/1) ball milled for 16 h is 141.8 °C, and the melting point is 197.3 °C; below 400 °C, composite hydrogen storage material is mainly decomposed to give hydrogen and Na 3BN 2; while above 400 °C, the previous by-product Na 3BN 2 continues to decompose so as to give metal Na gradually.",

keywords = "Amide, Borohydride, Composite materials, Fuel cells, Hydrogen storage, NaNH -NaBH",

author = "Chuan Wu and Ying Bai and Yang, {Jian Hu} and Feng Wu and Fei Long",

year = "2012",

month = jan,

doi = "10.1016/j.ijhydene.2011.03.171",

language = "English",

volume = "37",

pages = "889--893",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

number = "1",

}

TY - JOUR

T1 - Characterizations of composite NaNH 2-NaBH 4 hydrogen storage materials synthesized via ball milling

AU - Wu, Chuan

AU - Bai, Ying

AU - Yang, Jian Hu

AU - Wu, Feng

AU - Long, Fei

PY - 2012/1

Y1 - 2012/1

N2 - Composite NaNH 2-NaBH 4 (molar ratio of 2/1) hydrogen storage materials are prepared by a ball milling method with various ball milling times. The compositions and hydrogen generation characteristics are investigated by means of X-ray diffraction (XRD) and thermo gravimetric- differential thermal analysis (TG-DTA). The structural characteristics imply that ball milling produces a new phase of Na 3(NH 2) 2BH 4, and mechanical energy accumulated in the ball milling process may be responsible for the phase change of Na 3(NH 2) 2BH 4. TG-DTA demonstrates that the phase change temperature of the composite NaNH 2-NaBH 4 (2/1) ball milled for 16 h is 141.8 °C, and the melting point is 197.3 °C; below 400 °C, composite hydrogen storage material is mainly decomposed to give hydrogen and Na 3BN 2; while above 400 °C, the previous by-product Na 3BN 2 continues to decompose so as to give metal Na gradually.

AB - Composite NaNH 2-NaBH 4 (molar ratio of 2/1) hydrogen storage materials are prepared by a ball milling method with various ball milling times. The compositions and hydrogen generation characteristics are investigated by means of X-ray diffraction (XRD) and thermo gravimetric- differential thermal analysis (TG-DTA). The structural characteristics imply that ball milling produces a new phase of Na 3(NH 2) 2BH 4, and mechanical energy accumulated in the ball milling process may be responsible for the phase change of Na 3(NH 2) 2BH 4. TG-DTA demonstrates that the phase change temperature of the composite NaNH 2-NaBH 4 (2/1) ball milled for 16 h is 141.8 °C, and the melting point is 197.3 °C; below 400 °C, composite hydrogen storage material is mainly decomposed to give hydrogen and Na 3BN 2; while above 400 °C, the previous by-product Na 3BN 2 continues to decompose so as to give metal Na gradually.

KW - Amide

KW - Borohydride

KW - Composite materials

KW - Fuel cells

KW - Hydrogen storage

KW - NaNH -NaBH

UR - http://www.scopus.com/inward/record.url?scp=84655169931&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2011.03.171

DO - 10.1016/j.ijhydene.2011.03.171

M3 - Article

AN - SCOPUS:84655169931

SN - 0360-3199

VL - 37

SP - 889

EP - 893

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 1

ER -

Characterizations of composite NaNH 2-NaBH 4 hydrogen storage materials synthesized via ball milling

摘要

联合国可持续发展目标

访问文件

其它文件与链接

指纹

引用此

Characterizations of composite NaNH ₂-NaBH ₄ hydrogen storage materials synthesized via ball milling