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Article: Electron-Beam Induced Water Removal, Phase Change, and Crystallization of Anodic-Electrodeposited Turbostratic Nickel Hydroxide-Oxyhydroxide
Title | Electron-Beam Induced Water Removal, Phase Change, and Crystallization of Anodic-Electrodeposited Turbostratic Nickel Hydroxide-Oxyhydroxide |
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Authors | |
Keywords | In situ transmission electron microscopy (TEM) Nickel hydroxide-oxyhydroxide Phase transformation Turbostratic structures |
Issue Date | 2018 |
Publisher | Wiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-6319 |
Citation | Physica Status Solidi A: Applications and Materials Science, 2018, v. 215 n. 23, article no. 1800623 How to Cite? |
Abstract | Water removal, phase transformation, and crystallization of turbostratic nickel hydroxide and oxyhydroxide (Ni(OH)2‐NiOOH) are found to be inducible by the electron beam of a transmission electron microscope (TEM). Under 30 s of beam exposure at an accelerating voltage of 200 keV and a beam current density of 500 mA m−2, the original, characteristic turbostratic structure of Ni(OH)2‐NiOOH is observed to disappear, caused by the quick removal of intercalated water molecules by the electron beam. Increasing the current density from a low value of 1.5 mA m−2 to a high value of 500 mA m−2 can transform the Ni(OH)2‐NiOOH into nickel oxide (NiO) in 1 min. In situ heating and preheating experiments suggest that the transformation is caused by a heating effect induced by the electron beam. The results confirm that the mechanism previously discovered light‐induced actuation of Ni(OH)2‐NiOOH is caused by desorption of water molecules. |
Persistent Identifier | http://hdl.handle.net/10722/272228 |
ISSN | 2023 Impact Factor: 1.9 2023 SCImago Journal Rankings: 0.443 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Kwan, KW | - |
dc.contributor.author | Xie, D | - |
dc.contributor.author | Zhang, R | - |
dc.contributor.author | Shan, Z | - |
dc.contributor.author | Ngan, AHW | - |
dc.date.accessioned | 2019-07-20T10:38:11Z | - |
dc.date.available | 2019-07-20T10:38:11Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Physica Status Solidi A: Applications and Materials Science, 2018, v. 215 n. 23, article no. 1800623 | - |
dc.identifier.issn | 1862-6300 | - |
dc.identifier.uri | http://hdl.handle.net/10722/272228 | - |
dc.description.abstract | Water removal, phase transformation, and crystallization of turbostratic nickel hydroxide and oxyhydroxide (Ni(OH)2‐NiOOH) are found to be inducible by the electron beam of a transmission electron microscope (TEM). Under 30 s of beam exposure at an accelerating voltage of 200 keV and a beam current density of 500 mA m−2, the original, characteristic turbostratic structure of Ni(OH)2‐NiOOH is observed to disappear, caused by the quick removal of intercalated water molecules by the electron beam. Increasing the current density from a low value of 1.5 mA m−2 to a high value of 500 mA m−2 can transform the Ni(OH)2‐NiOOH into nickel oxide (NiO) in 1 min. In situ heating and preheating experiments suggest that the transformation is caused by a heating effect induced by the electron beam. The results confirm that the mechanism previously discovered light‐induced actuation of Ni(OH)2‐NiOOH is caused by desorption of water molecules. | - |
dc.language | eng | - |
dc.publisher | Wiley - V C H Verlag GmbH & Co KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1862-6319 | - |
dc.relation.ispartof | Physica Status Solidi A: Applications and Materials Science | - |
dc.rights | This is the peer reviewed version of the following article: Physica Status Solidi A: Applications and Materials Science, 2018, v. 215 n. 23, article no. 1800623, which has been published in final form at https://doi.org/10.1002/pssa.201800623. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | - |
dc.subject | In situ transmission electron microscopy (TEM) | - |
dc.subject | Nickel hydroxide-oxyhydroxide | - |
dc.subject | Phase transformation | - |
dc.subject | Turbostratic structures | - |
dc.title | Electron-Beam Induced Water Removal, Phase Change, and Crystallization of Anodic-Electrodeposited Turbostratic Nickel Hydroxide-Oxyhydroxide | - |
dc.type | Article | - |
dc.identifier.email | Kwan, KW: kwan15@hku.hk | - |
dc.identifier.email | Ngan, AHW: hwngan@hku.hk | - |
dc.identifier.authority | Ngan, AHW=rp00225 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1002/pssa.201800623 | - |
dc.identifier.scopus | eid_2-s2.0-85054505043 | - |
dc.identifier.hkuros | 298846 | - |
dc.identifier.volume | 215 | - |
dc.identifier.issue | 23 | - |
dc.identifier.spage | article no. 1800623 | - |
dc.identifier.epage | article no. 1800623 | - |
dc.identifier.isi | WOS:000452297400020 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1862-6300 | - |