DataVXACS Energy LettersPaper
journal article·2026-05-08

Chemically Bonded T/TT Nb 2 O 5 Heterojunctions with a Strong Internal Electric Field for High Performance Electrochromic Smart Windows

Huanhuan Liu, Yu Zhong, Sensen Jia, Xiaodan Guo, Feixiang Ping, Xinyu Wang, Linlin Liu, Ying Lv, Guofa Cai

ACS Energy Letters· Volume 11· Issue 5
Publisher page
Source abstract

Abstract

Transition metal oxides represent a prominent class of electrochromic materials for energy-saving smart windows. However, the reaction kinetics, essential for high electrochromic performance, has been hampered by inherently low electrical conductivity. Herein, we utilize a spontaneous phase transition strategy that introduces an internal electric field within a chemically bonded heterointerface to overcome this limitation. We demonstrate, both experimentally and theoretically, accelerated ion diffusion kinetics, with the Li + diffusion energy barrier dramatically reduced from 0.48 to 0.19 eV, enabling large optical modulation (85.0%) and fast switching speed (7.3 and 5.3 s for coloring and bleaching, respectively). The resulting device demonstrates notable thermal management and energy-saving performance, achieving an impressive indoor temperature modulation of 13.1 °C and energy savings of up to 19%.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Transition Metal Oxide Nanomaterials · Conducting polymers and applications · Magneto-Optical Properties and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Special Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, and School of Nanoscience and Materials Engineering

Henan University

Research Center for Crystal Materials; State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions Xinjiang Key Laboratory of Functional Crystal Materials; Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Road, Urumqi 830011, China

State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics

Chinese Academy of Sciences

Funding

Natural Science Foundation of Henan Province · National Natural Science Foundation of China · Huanhuan Liu · Innovative Research Team (in Science and Technology) in University of Henan Province · Guofa Cai

References (60)

Show source-provided references
1. 10.1038/s41467-023-38353-410.1038/s41467-023-38353-4 ↗
2. 10.1002/adfm.20241365910.1002/adfm.202413659 ↗
3. 10.1038/s41467-021-21852-710.1038/s41467-021-21852-7 ↗
4. 10.1038/s41893-024-01349-z10.1038/s41893-024-01349-z ↗
5. 10.1038/s41467-024-50542-310.1038/s41467-024-50542-3 ↗
6. 10.1038/s41467-024-46500-810.1038/s41467-024-46500-8 ↗
7. 10.1002/aenm.20240260310.1002/aenm.202402603 ↗
8. 10.1002/aenm.20210310610.1002/aenm.202103106 ↗
9. 10.1002/adma.20240267010.1002/adma.202402670 ↗
10. 10.1002/adma.20242057810.1002/adma.202420578 ↗
11. 10.1002/adfm.20221488610.1002/adfm.202214886 ↗
12. 10.1021/acs.nanolett.2c0060010.1021/acs.nanolett.2c00600 ↗
13. 10.1002/adfm.20180218010.1002/adfm.201802180 ↗
14. 10.1021/acs.chemmater.0c0147810.1021/acs.chemmater.0c01478 ↗
15. 10.1002/adma.20200468610.1002/adma.202004686 ↗
16. 10.1007/s12274-023-5600-710.1007/s12274-023-5600-7 ↗
17. 10.1007/s12274-023-6106-z10.1007/s12274-023-6106-z ↗
18. 10.1016/j.joule.2018.12.01010.1016/j.joule.2018.12.010 ↗
19. 10.1021/jacs.5b0493310.1021/jacs.5b04933 ↗
20. 10.1021/acs.chemmater.8b0219610.1021/acs.chemmater.8b02196 ↗
21. 10.1002/smsc.20230021910.1002/smsc.202300219 ↗
22. 10.1039/C7MH01128H10.1039/C7MH01128H ↗
23. 10.1039/D2MH01472F10.1039/D2MH01472F ↗
24. 10.1002/anie.20221328510.1002/anie.202213285 ↗
25. 10.1002/adfm.20231053510.1002/adfm.202310535 ↗
26. 10.1016/j.cej.2023.14662610.1016/j.cej.2023.146626 ↗
27. 10.1002/anie.20220351910.1002/anie.202203519 ↗
28. 10.1038/ncomms1148010.1038/ncomms11480 ↗
29. 10.1002/adma.20241035510.1002/adma.202410355 ↗
30. 10.1038/s41467-021-24882-310.1038/s41467-021-24882-3 ↗
31. 10.1002/anie.20170654910.1002/anie.201706549 ↗
32. 10.1002/adma.20190054610.1002/adma.201900546 ↗
33. 10.1039/D6TA01049K10.1039/D6TA01049K ↗
34. 10.1021/acsami.1c1172010.1021/acsami.1c11720 ↗
35. 10.1016/j.apcatb.2021.12067710.1016/j.apcatb.2021.120677 ↗
36. 10.1016/j.scib.2020.04.01110.1016/j.scib.2020.04.011 ↗
37. 10.1002/adfm.20210706010.1002/adfm.202107060 ↗
38. 10.1002/advs.20220220110.1002/advs.202202201 ↗
39. 10.1039/D1TA09231F10.1039/D1TA09231F ↗
40. 10.1002/adma.20220075610.1002/adma.202200756 ↗
41. 10.1002/smll.20240546710.1002/smll.202405467 ↗
42. 10.1016/j.apcata.2020.11774710.1016/j.apcata.2020.117747 ↗
43. 10.1038/nature1239810.1038/nature12398 ↗
44. 10.1021/acs.chemmater.2c0093010.1021/acs.chemmater.2c00930 ↗
45. 10.1021/acs.chemmater.9b0406110.1021/acs.chemmater.9b04061 ↗
46. 10.1038/nmat473410.1038/nmat4734 ↗
47. 10.1021/acs.nanolett.7b0273010.1021/acs.nanolett.7b02730 ↗
48. 10.1002/adfm.20250012210.1002/adfm.202500122 ↗
49. 10.1016/j.nanoen.2024.10998910.1016/j.nanoen.2024.109989 ↗
50. 10.1038/s41928-021-00697-410.1038/s41928-021-00697-4 ↗
51. 10.1002/aenm.20220410310.1002/aenm.202204103 ↗
52. 10.1016/j.cej.2025.16196210.1016/j.cej.2025.161962 ↗
53. 10.1016/j.cej.2025.16353510.1016/j.cej.2025.163535 ↗
54. 10.1002/adfm.20241587410.1002/adfm.202415874 ↗
55. 10.1002/adma.20240693910.1002/adma.202406939 ↗
56. 10.1039/D0CS00317D10.1039/D0CS00317D ↗
57. 10.1021/acsami.3c0174210.1021/acsami.3c01742 ↗
58. 10.1002/adma.20240979010.1002/adma.202409790 ↗
59. 10.1002/adom.20220211510.1002/adom.202202115 ↗
60. 10.1038/sdata.2018.21410.1038/sdata.2018.214 ↗