Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte

High-temperature-induced fire is an extremely serious safety risk in energy storage devices; which can be avoided by replacing their components with nonflammable materials. However; these devices are still destroyed by the high-temperature decomposition; lacking reliability. Here, a fire-tolerant su...

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Main Authors: Xia, Huarong, Lv, Zhisheng, Zhang, Wei, Wei, Jiaqi, Liu, Lin, Cao, Shengkai, Zhu, Zhiqiang, Tang, Yuxin, Chen, Xiaodong
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/161506
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1615062023-07-14T16:06:01Z Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte Xia, Huarong Lv, Zhisheng Zhang, Wei Wei, Jiaqi Liu, Lin Cao, Shengkai Zhu, Zhiqiang Tang, Yuxin Chen, Xiaodong School of Materials Science and Engineering Institute of Materials Research and Engineering, A*STAR Innovative Centre for Flexible Devices Science::Chemistry::Physical chemistry::Electrochemistry Engineering::Materials::Energy materials Li‐Ion Batteries Dual-Ion Batteries Deep Cycling Batteries High-temperature-induced fire is an extremely serious safety risk in energy storage devices; which can be avoided by replacing their components with nonflammable materials. However; these devices are still destroyed by the high-temperature decomposition; lacking reliability. Here, a fire-tolerant supercapacitor is further demonstrated that recovers after burning with a self-healable "solute-in-air" electrolyte. Using fire-tolerant electrodes and separator with a semiopen device configuration; hygroscopic CaCl2 in the air ("CaCl2 -in-air") is designed as a self-healable electrolyte; which loses its water solvent at high temperatures but spontaneously absorbs water from the air to recover by itself at low temperatures. The supercapacitor is disenabled at 500 °C; while it recovers after cooling in the air. Especially; it even recovers after burning at around 647 °C with enhanced performance. The study offers a self-healing strategy to design high-safety; high-reliability; and fire-tolerant supercapacitors; which inspires a promising way to deal with general fire-related risks. National Research Foundation (NRF) Submitted/Accepted version The research leading to these results has received funding from National Research Foundation of Prime Minister’s Office of Singapore (proposal ID: NRF2015_IIP003_004 and NRF2015EWT-EIRP002-008) and grants under its Campus of Research Excellence and Technological Enterprise (CREATE) programme. 2022-09-07T06:36:39Z 2022-09-07T06:36:39Z 2022 Journal Article Xia, H., Lv, Z., Zhang, W., Wei, J., Liu, L., Cao, S., Zhu, Z., Tang, Y. & Chen, X. (2022). Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte. Advanced Materials, 34(14), 2109857-. https://dx.doi.org/10.1002/adma.202109857 0935-9648 https://hdl.handle.net/10356/161506 10.1002/adma.202109857 35129848 2-s2.0-85125194184 14 34 2109857 en NRF2015_IIP003_004 NRF2015EWT-EIRP002-008 Advanced Materials This is the peer reviewed version of the following article: Xia, H., Lv, Z., Zhang, W., Wei, J., Liu, L., Cao, S., Zhu, Z., Tang, Y. & Chen, X. (2022). Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte. Advanced Materials, 34(14), 2109857-, which has been published in final form at https://doi.org/10.1002/adma.202109857. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Chemistry::Physical chemistry::Electrochemistry
Engineering::Materials::Energy materials
Li‐Ion Batteries
Dual-Ion Batteries
Deep Cycling Batteries
spellingShingle Science::Chemistry::Physical chemistry::Electrochemistry
Engineering::Materials::Energy materials
Li‐Ion Batteries
Dual-Ion Batteries
Deep Cycling Batteries
Xia, Huarong
Lv, Zhisheng
Zhang, Wei
Wei, Jiaqi
Liu, Lin
Cao, Shengkai
Zhu, Zhiqiang
Tang, Yuxin
Chen, Xiaodong
Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
description High-temperature-induced fire is an extremely serious safety risk in energy storage devices; which can be avoided by replacing their components with nonflammable materials. However; these devices are still destroyed by the high-temperature decomposition; lacking reliability. Here, a fire-tolerant supercapacitor is further demonstrated that recovers after burning with a self-healable "solute-in-air" electrolyte. Using fire-tolerant electrodes and separator with a semiopen device configuration; hygroscopic CaCl2 in the air ("CaCl2 -in-air") is designed as a self-healable electrolyte; which loses its water solvent at high temperatures but spontaneously absorbs water from the air to recover by itself at low temperatures. The supercapacitor is disenabled at 500 °C; while it recovers after cooling in the air. Especially; it even recovers after burning at around 647 °C with enhanced performance. The study offers a self-healing strategy to design high-safety; high-reliability; and fire-tolerant supercapacitors; which inspires a promising way to deal with general fire-related risks.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Xia, Huarong
Lv, Zhisheng
Zhang, Wei
Wei, Jiaqi
Liu, Lin
Cao, Shengkai
Zhu, Zhiqiang
Tang, Yuxin
Chen, Xiaodong
format Article
author Xia, Huarong
Lv, Zhisheng
Zhang, Wei
Wei, Jiaqi
Liu, Lin
Cao, Shengkai
Zhu, Zhiqiang
Tang, Yuxin
Chen, Xiaodong
author_sort Xia, Huarong
title Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
title_short Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
title_full Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
title_fullStr Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
title_full_unstemmed Hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
title_sort hygroscopic chemistry enables fire-tolerant supercapacitors with a self-healable “solute-in-air” electrolyte
publishDate 2022
url https://hdl.handle.net/10356/161506
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