Vertical iontronic energy storage based on osmotic effects and electrode redox reactions

Making salinity gradient energy practical is a great challenge. Despite recent advancements, the practicality of osmotic energy for portable electronics remains doubtful due to its limited power output and portability constraints. Here we report a method for optimizing the transport of alkali metal...

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Bibliographic Details
Published in:Nature energy 2024-03, Vol.9 (3), p.263-271
Main Authors: Yang, Feiyao, Peng, Puguang, Yan, Zhao-Yi, Fan, Hongzhao, Li, Xiang, Li, Shaoxin, Liu, Houfang, Ren, Tian-Ling, Zhou, Yanguang, Wang, Zhong Lin, Wei, Di
Format: Article
Language:English
Subjects:
639/4077/4072/4062
639/4077/4079/891
639/925/357/1018
639/925/918/1052
639/925/927/351
Alkali metals
Economics and Management
Electronics
Energy
Energy Policy
Energy Storage
Energy Systems
Fluidics
Metal ions
Nanofluids
Polymer films
Polymers
Portability
Power management
Power sources
Redox reactions
Renewable and Green Energy
Specific energy
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Summary:Making salinity gradient energy practical is a great challenge. Despite recent advancements, the practicality of osmotic energy for portable electronics remains doubtful due to its limited power output and portability constraints. Here we report a method for optimizing the transport of alkali metal ions within two-dimensional nanofluidic channels and coupling it with tailored interfacial redox reactions to store the osmotic energy in a space of tens of micrometres within the cut edge of a polymer film. An ultrahigh output power density of 15,900 W m −2 has been achieved. By connecting the devices in series, commercial electronics can be powered due to the high volumetric specific energy density (9.46 Wh cm −3 ) and power density (106.33 W cm −3 ). This work introduces an approach for storing iontronic energy based on osmotic effects, providing a platform for developing renewable, ultrathin and safe power sources. The practicality of osmotic energy for portable electronics has been challenging despite recent advancements. Researchers devise a method to store iontronic energy in a polymer film based on osmotic effects, achieving high energy and power density.
ISSN:2058-7546
2058-7546
DOI:10.1038/s41560-023-01431-4