Abnormal Hydrogen Absorption/Desorption Properties of Nanoporous Pt with Large Lattice Strains

• Hakamada Masataka

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

• Furukawa Toshiyuki

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

• Yamamoto Tao

  Undergraduate School of Global Engineering, Faculty of Engineering, Kyoto University

• Takahashi Masaki

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

• Mabuchi Mamoru

  Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University

抄録

Hydrogen absorption/desorption properties of nanoporous Pt fabricated by dealloying were investigated. At high pressure (>1.3 MPa), the nanoporous Pt released hydrogen during hydrogen pressurization; in contrast, it absorbed hydrogen up to 3.5 atom% during hydrogen depressurization, which have not been seen in current metal/hydride systems including nanoparticles. First-principles calculations suggested that the abnormal hydrogen absorption/desorption properties are due to the relaxation/preservation of the lattice strain in Pt hydride.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 52 (4), 806-809, 2011

  公益社団法人 日本金属学会

キーワード

• hydride
• platinum
• nanoporous
• surface strain

詳細情報

• CRID: 1390001204249273856
• NII論文ID: 10028175668
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2010403
• ISSN: 13475320
• ISSN: 13459678
• HANDLE: 2433/237641
• NDL書誌ID: 11058411
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11058411
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/52/4/52_M2010403/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可