Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance
Abstract Layered manganese dioxide containing K cations in-between the MnO2 layers is known to be capable of reversibly storing and releasing thermal energy through the rapid water intercalation mechanism. In this study, we demonstrate that MnO2 nanosheets exhibit superior heat storage properties by...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-06-01
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| Series: | Communications Chemistry |
| Online Access: | https://doi.org/10.1038/s42004-025-01567-2 |
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| _version_ | 1849724836718313472 |
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| author | Hiroki Yoshisako Norihiko L. Okamoto Kazuya Tanaka Tetsu Ichitsubo |
| author_facet | Hiroki Yoshisako Norihiko L. Okamoto Kazuya Tanaka Tetsu Ichitsubo |
| author_sort | Hiroki Yoshisako |
| collection | DOAJ |
| description | Abstract Layered manganese dioxide containing K cations in-between the MnO2 layers is known to be capable of reversibly storing and releasing thermal energy through the rapid water intercalation mechanism. In this study, we demonstrate that MnO2 nanosheets exhibit superior heat storage properties by the combination of surface water adsorption and bulk water intercalation. The heat storage capacity has been experimentally increased by approximately 1.3 times by reducing the crystallite size from sub-micrometer order to a few tens of nanometers, and it is further expected to more than double by reducing it to a single nanometer. Further importantly, the charging temperature can be tuned to a lower side since the temperature range of dehydration from the MnO2 surface (below 60 °C) is lower than that from the interlayer (120–160 °C). This work gives a new pathway for low-temperature heat operation by shifting the paradigm of HSM from bulk-centered mechanisms to surface-driven processes. |
| format | Article |
| id | doaj-art-3b7e9668deb54c258be7a77c3fce1a28 |
| institution | DOAJ |
| issn | 2399-3669 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Chemistry |
| spelling | doaj-art-3b7e9668deb54c258be7a77c3fce1a282025-08-20T03:10:38ZengNature PortfolioCommunications Chemistry2399-36692025-06-01811910.1038/s42004-025-01567-2Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performanceHiroki Yoshisako0Norihiko L. Okamoto1Kazuya Tanaka2Tetsu Ichitsubo3Institute for Materials Research, Tohoku University, Katahira, Aoba-kuInstitute for Materials Research, Tohoku University, Katahira, Aoba-kuAdvanced Science Research Center, Japan Atomic Energy Agency, ShirakataInstitute for Materials Research, Tohoku University, Katahira, Aoba-kuAbstract Layered manganese dioxide containing K cations in-between the MnO2 layers is known to be capable of reversibly storing and releasing thermal energy through the rapid water intercalation mechanism. In this study, we demonstrate that MnO2 nanosheets exhibit superior heat storage properties by the combination of surface water adsorption and bulk water intercalation. The heat storage capacity has been experimentally increased by approximately 1.3 times by reducing the crystallite size from sub-micrometer order to a few tens of nanometers, and it is further expected to more than double by reducing it to a single nanometer. Further importantly, the charging temperature can be tuned to a lower side since the temperature range of dehydration from the MnO2 surface (below 60 °C) is lower than that from the interlayer (120–160 °C). This work gives a new pathway for low-temperature heat operation by shifting the paradigm of HSM from bulk-centered mechanisms to surface-driven processes.https://doi.org/10.1038/s42004-025-01567-2 |
| spellingShingle | Hiroki Yoshisako Norihiko L. Okamoto Kazuya Tanaka Tetsu Ichitsubo Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance Communications Chemistry |
| title | Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance |
| title_full | Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance |
| title_fullStr | Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance |
| title_full_unstemmed | Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance |
| title_short | Utilizing surface water adsorption on layered MnO2 nanosheets for enhancing heat storage performance |
| title_sort | utilizing surface water adsorption on layered mno2 nanosheets for enhancing heat storage performance |
| url | https://doi.org/10.1038/s42004-025-01567-2 |
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