Brookite TiO2 Nanorods as Promising Electrochromic and Energy Storage Materials for Smart Windows
Xing, Congcong (Institut de Recerca en Energia de Catalunya)
Yang, Linlin (Institut de Recerca en Energia de Catalunya)
He, Ren (Institut de Recerca en Energia de Catalunya)
Spadaro, Maria Chiara (Institut Català de Nanociència i Nanotecnologia)
Zhang, Yu (Institut de Recerca en Energia de Catalunya)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Li, Junshan (Chengdu University)
Poudel, Bed (Pennsylvania State University)
Nozariasbmarz, Amin (Pennsylvania State University)
Li, Wenjie (Pennsylvania State University)
Lim, Khak Ho (Institute of Zhejiang University-Quzhou)
Liu, Yu (Hefei University of Technology)
Llorca, Jordi (Institut de Recerca en Energia de Catalunya)
Cabot i Codina, Andreu (Institut de Ciència de Materials de Barcelona)

Date:	2023
Abstract:	Electrochromic smart windows (ESWs) offer an attractive option for regulating indoor lighting conditions. Electrochromic materials based on ion insertion/desertion mechanisms also present the possibility for energy storage, thereby increasing overall energy efficiency and adding value to the system. However, current electrochromic electrodes suffer from performance degradation, long response time, and low coloration efficiency. This work aims to produce defect-engineered brookite titanium dioxide (TiO) nanorods (NRs) with different lengths and investigate their electrochromic performance as potential energy storage materials. The controllable synthesis of TiO NRs with inherent defects, along with smaller impedance and higher carrier concentrations, significantly enhances their electrochromic performance, including improved resistance to degradation, shorter response times, and enhanced coloration efficiency. The electrochromic performance of TiO NRs, particularly longer ones, is characterized by fast switching speeds (20 s for coloration and 12 s for bleaching), high coloration efficiency (84. 96 cm C at a 600 nm wavelength), and good stability, highlighting their potential for advanced electrochromic smart window applications based on Li ion intercalation.
Grants:	Ministerio de Ciencia e Innovación CEX2021-001214-S Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01061 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-01581 Agencia Estatal de Investigación PID2019-105490RB-C32 Agencia Estatal de Investigación PID2021-124572OB-C31 Agencia Estatal de Investigación PID2020-116093RB-C43
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Small (Weinheim), Vol. 19, Issue 49 (December 2023) , art. 2303639, ISSN 1613-6829

DOI: 10.1002/smll.202303639

11 p, 3.8 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles