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Extraordinarily Stable Aqueous Electrochromic Battery Based on Li4Ti5O12 and Hybrid Al3+/Zn2+ Electrolyte
WU, Zhisheng; Yan, Shanshan; LI, Jielei; XU, Jincheng; CHEN, Shi; Tang, Zikang; WANG, Shuang-peng; NG, Kar Wei
2022-08
Source PublicationACS Nano
ISSN1936-0851
Contribution Rank1
Abstract

Aqueous electrochromic battery (ECB) is a multifunctional technology that shows great potential in various applications including energy-saving buildings and wearable batteries with visible energy levels. However, owing to the mismatch between traditional electrochromic materials and the electrolyte, aqueous ECBs generally exhibit poor cycling stability which bottlenecks their practical commercialization. Herein, we present an ultrastable electrochromic system composed of lithium titanate (Li4Ti5O12, LTO) electrode and Al3+/Zn2+ hybrid electrolyte. The fully compatible system exhibits excellent redox reaction reversibility, thus leading to extremely high cycling stabilities in optical contrast (12 500 cycles with unnoticeable degradation) and energy storage (4000 cycles with 82.6% retention of capacity), superior electrochromic performances including high optical contrast (∼74.73%) and fast responses (4.35 s/7.65 s for bleaching/coloring), as well as excellent discharge areal capacity of 151.94 mAh m–2. The extraordinary cycling stability can be attributed to the robust [TiO6] octahedral frameworks which remain chemically active even upon the gradual substitution of Li+ with Al3+ in LTO over multiple operation cycles. The high-performance electrochromic system demonstrated here not only makes the commercialization of low-cost, high-safety aqueous-based electrochromic devices possible but also provides potential design guidance for LTO-related materials used in aqueous-based energy storage devices.

KeywordAqueous Electrochromic Battery Li4ti5o12 Multivalent Ion Batteries Smart Window Long-term Stability
Subject Area物理学 ; 化学
DOIhttps://doi.org/10.1021/acsnano.2c06479
URLView the original
Indexed BySCIE
Language英語English
PublisherAmerican Chemical Society
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Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorWANG, Shuang-peng; NG, Kar Wei
Recommended Citation
GB/T 7714
WU, Zhisheng,Yan, Shanshan,LI, Jielei,et al. Extraordinarily Stable Aqueous Electrochromic Battery Based on Li4Ti5O12 and Hybrid Al3+/Zn2+ Electrolyte[J]. ACS Nano,2022.
APA WU, Zhisheng,Yan, Shanshan,LI, Jielei,XU, Jincheng,CHEN, Shi,Tang, Zikang,WANG, Shuang-peng,&NG, Kar Wei.(2022).Extraordinarily Stable Aqueous Electrochromic Battery Based on Li4Ti5O12 and Hybrid Al3+/Zn2+ Electrolyte.ACS Nano.
MLA WU, Zhisheng,et al."Extraordinarily Stable Aqueous Electrochromic Battery Based on Li4Ti5O12 and Hybrid Al3+/Zn2+ Electrolyte".ACS Nano (2022).
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