WFRF:(Zeng Zhi)
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- Guo, JunjiShenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China. (author)
Unprecedented Electrochromic Stability of a-WO3-x Thin Films Achieved by Using a Hybrid-Cationic Electrolyte
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- 2021-03-01
- American Chemical Society (ACS),2021
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:uu-441178
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-441178URI
- https://doi.org/10.1021/acsami.0c22921DOI
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- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- With large interstitial space volumes and fast ion diffusion pathways, amorphous metal oxides as cathodic intercalation materials for electrochromic devices have attracted attention. However, these incompact thin films normally suffer from two inevitable imperfections: self-deintercalation of guest ions and poor stability of the structure, which constitute a big obstacle toward the development of high-stable commercial applications. Here, we present a low-cost, eco-friendly hybrid cation 1,2-PG-AlCl3 center dot 6H(2)O electrolyte, in which the sputter-deposited a-WO3-x thin film can exhibit both the long-desired excellent open-circuit memory (>100 h, with zero optical loss) and super-long cycling lifetime (similar to 20,000 cycles, with 80% optical modulation), benefiting from the formation of unique Al-hydroxide-based solid electrolyte interphase during electrochromic operations. In addition, the optical absorption behaviors in a-WO3-x caused by host-guest interactions were elaborated. We demonstrated that the intervalence transfers are primarily via the "corner-sharing" related path (W5+ <-> W6+) but not the "edge-sharing" related paths (W4+ <-> W6+ and/or W4+ <-> W5+), and the small polaron/electron transfers taking place at the W-O bond-breaking positions are not allowed. Our findings might provide in-depth insights into the nature of electrochromism and provide a significant step in the realization of more stable, more excellent electrochromic applications based on amorphous metal oxides.
Subject headings and genre
- NATURVETENSKAP Kemi Materialkemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
- NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
- a-WO3-x thin film
- 1
- 2-PG-AlCl3 center dot 6H(2)O electrolyte
- open-circuit memory
- cyclic stability
- optical absorption
Added entries (persons, corporate bodies, meetings, titles ...)
- Guo, XingChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.;Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China. (author)
- Sun, HuibinShenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China. (author)
- Xie, YizhuShenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China.;Shenzhen Univ, Key Lab Optoelect Devices & Syst, Coll Phys & Optoelect Engn, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China. (author)
- Diao, XungangBeihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China. (author)
- Wang, MeiBeihang Univ, Sch Phys, Beijing 100191, Peoples R China. (author)
- Zeng, XipingShenzhen Huake Tek Co Ltd, Shenzhen 518000, Peoples R China. (author)
- Zhang, Zhi-BinUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)zhizh813 (author)
- Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.;Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China. (creator_code:org_t)
Related titles
- In:ACS Applied Materials and Interfaces: American Chemical Society (ACS)13:9, s. 11067-110771944-82441944-8252
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