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Amorphous-Crystalline Interface Induced Internal Electric Fields for Electrochromic Smart Window.
Zhang, Shi; Han, Xiao; Liu, Xiaocheng; Huang, Zixiang; Wang, Pinyi; Sheng, Sizhe; Wu, Geng; He, Jiachuan; Guo, Jingjing; Zheng, Xusheng; Li, Hai; Liu, Jian-Wei; Hong, Xun.
Affiliation
  • Zhang S; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Han X; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Liu X; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Huang Z; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Wang P; National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Sheng S; Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, P. R. China.
  • Wu G; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • He J; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Guo J; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Zheng X; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Li H; National Synchrotron Radiation Laboratory (NSRL), University of Science and Technology of China, Hefei, 230026, P. R. China.
  • Liu JW; Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211816, P. R. China.
  • Hong X; Center of Advanced Nanocatalysis (CAN), Department of Applied Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.
Adv Mater ; : e2410355, 2024 Sep 30.
Article in En | MEDLINE | ID: mdl-39350446
ABSTRACT
Balancing optical modulation and response time is crucial for achieving high coloration efficiency in electrochromic materials. Here, internal electric fields are introduced to titanium dioxide nanosheets by constructing abundant amorphous-crystalline interfaces, ensuring large optical modulation while reducing response time and therefore improving coloration efficiency. Aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) reveals the presence of numerous amorphous-crystalline phase boundaries in titanium dioxide nanosheets. Kelvin probe force microscopy (KPFM) exhibits an intense surface potential distribution, demonstrating the presence of internal electric fields. Density functional theory (DFT) calculations confirm that the amorphous-crystalline heterointerfaces can generate internal electric fields and reduce diffusion barriers of lithium ions. As a result, the amorphous-crystalline titanium dioxide nanosheets exhibit better coloration efficiency (35.1 cm2 C-1) than pure amorphous and crystalline titanium dioxide nanosheets.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2024 Document type: Article Country of publication: Germany
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2024 Document type: Article Country of publication: Germany