Nanostructure-induced performance degradation of WO3·nH2O for energy conversion and storage devices; Beilstein Journal of Nanotechnology; Vol. 9

Nanostructure-induced performance degradation of WO3·nH2O for energy conversion and storage devices

מידע ביבליוגרפי
Parent link:Beilstein Journal of Nanotechnology
Vol. 9.— 2018.— [P. 2845–2854]
מחבר תאגידי: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий (ИШХБМТ)
מחברים אחרים: Hai Zh. Zhenyin, Akbari M. K. Mohammad Karbalaei, Wei Zh. Zihan, Cui Danfeng, Xue Chenyang, Xu Hongyan, Heynderickx P. M. Philippe, Verpoort F. V. K. Frensis Valter Kornelius, Zhuiykov S. Serge
סיכום:Title screen
Although 2D layered nanomaterials have been intensively investigated towards their application in energy conversion and storage devices, their disadvantages have rarely been explored so far especially compared to their 3D counterparts. Herein, WO3·nH2O (n = 0, 1, 2), as the most common and important electrochemical and electrochromic active nanomaterial, is synthesized in 3D and 2D structures through a facile hydrothermal method, and the disadvantages of the corresponding 2D structures are examined. The weakness of 2D WO3·nH2O originates from its layered structure. X-ray diffraction and scanning electron microscopy analyses of as-grown WO3·nH2O samples suggest a structural transition from 2D to 3D upon temperature increase. 2D WO3·nH2O easily generates structural instabilities by 2D intercalation, resulting in a faster performance degradation, due to its weak interlayer van der Waals forces, even though it outranks the 3D network structure in terms of improved electronic properties. The structural transformation of 2D layered WO3·nH2O into 3D nanostructures is observed via ex situ Raman measurements under electrochemical cycling experiments. The proposed degradation mechanism is confirmed by the morphology changes. The work provides strong evidence for and in-depth understanding of the weakness of 2D layered nanomaterials and paves the way for further interlayer reinforcement, especially for 2D layered transition metal oxides.
שפה:אנגלית
יצא לאור: 2018
נושאים:
электронный ресурс
труды учёных ТПУ
2D layered oxides
nterlayer water
van der Waals interaction
WO3·nH2O
оксиды
גישה מקוונת:http://dx.doi.org/10.3762/bjnano.9.265
פורמט: אלקטרוני Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660288

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