Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower
Abstract Ionogels have emerged as promising candidates for low‐grade thermal energy harvesting due to their leak‐free electrolytes, exceptional flexibility, thermal stability, and high thermopower. While substantial progress in the thermoelectric performance of p‐type ionogels, research on n‐type io...
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Wiley
2025-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202414389 |
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| author | Wenchao Zhen Chengshuai Lu Duo Li Guangfan Meng Hongqin Wang Yifei Jiang Jiang Lou Wenjia Han |
| author_facet | Wenchao Zhen Chengshuai Lu Duo Li Guangfan Meng Hongqin Wang Yifei Jiang Jiang Lou Wenjia Han |
| author_sort | Wenchao Zhen |
| collection | DOAJ |
| description | Abstract Ionogels have emerged as promising candidates for low‐grade thermal energy harvesting due to their leak‐free electrolytes, exceptional flexibility, thermal stability, and high thermopower. While substantial progress in the thermoelectric performance of p‐type ionogels, research on n‐type ionic materials lags behind. Striking a harmonious balance between high mechanical performance and thermoelectric properties remains a formidable challenge. This work presents an advanced n‐type ionogel system integrating polyethylene glycol diacrylate (PEGDA), hydroxyethyl methacrylate (HEMA), 1‐allyl‐3‐methylimidazolium chloride ([AMIM]Cl), and bacterial cellulose (BC) through a rational design strategy. The synergistic combination of photo‐polymerization and hydrogen‐bonding networks effectively immobilizes imidazolium cations while enabling rapid chloride ion transport, creating a pronounced cation‐anion mobility disparity that yields a substantial negative ionic Seebeck coefficient of −7.16 mV K⁻¹. Furthermore, BC's abundant hydroxyl groups establish multivalent hydrogen bonds within the ternary polymer matrix, endowing the composite with exceptional mechanical properties—notably a tensile strength of 3.2 MPa and toughness of 4.1 MJ m⁻3. Moreover, the ionogel exhibits sensitive responses to stimuli such as pressure, strain, and temperature. The thermoelectric modules fabricated can harness body heat to illuminate a bulb, showcasing great potential for low‐grade energy harvesting and ultra‐sensitive sensing. |
| format | Article |
| id | doaj-art-99ca2d6b6cd346288fffa18b1f6d2af5 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley |
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| spelling | doaj-art-99ca2d6b6cd346288fffa18b1f6d2af52025-08-20T03:47:33ZengWileyAdvanced Science2198-38442025-05-011219n/an/a10.1002/advs.202414389Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High ThermopowerWenchao Zhen0Chengshuai Lu1Duo Li2Guangfan Meng3Hongqin Wang4Yifei Jiang5Jiang Lou6Wenjia Han7Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaState Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaYingkou Shengquan High‐tech Materials Co., Ltd Yingkou 115000 P. R. ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaKey Laboratory of Pulp and Paper Science & Technology of Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan 250353 P. R. ChinaAbstract Ionogels have emerged as promising candidates for low‐grade thermal energy harvesting due to their leak‐free electrolytes, exceptional flexibility, thermal stability, and high thermopower. While substantial progress in the thermoelectric performance of p‐type ionogels, research on n‐type ionic materials lags behind. Striking a harmonious balance between high mechanical performance and thermoelectric properties remains a formidable challenge. This work presents an advanced n‐type ionogel system integrating polyethylene glycol diacrylate (PEGDA), hydroxyethyl methacrylate (HEMA), 1‐allyl‐3‐methylimidazolium chloride ([AMIM]Cl), and bacterial cellulose (BC) through a rational design strategy. The synergistic combination of photo‐polymerization and hydrogen‐bonding networks effectively immobilizes imidazolium cations while enabling rapid chloride ion transport, creating a pronounced cation‐anion mobility disparity that yields a substantial negative ionic Seebeck coefficient of −7.16 mV K⁻¹. Furthermore, BC's abundant hydroxyl groups establish multivalent hydrogen bonds within the ternary polymer matrix, endowing the composite with exceptional mechanical properties—notably a tensile strength of 3.2 MPa and toughness of 4.1 MJ m⁻3. Moreover, the ionogel exhibits sensitive responses to stimuli such as pressure, strain, and temperature. The thermoelectric modules fabricated can harness body heat to illuminate a bulb, showcasing great potential for low‐grade energy harvesting and ultra‐sensitive sensing.https://doi.org/10.1002/advs.202414389high Seebeck coefficientionic liquidsionogel thermo‐electric materialsmulti‐functional sensorspolyacrylic ester |
| spellingShingle | Wenchao Zhen Chengshuai Lu Duo Li Guangfan Meng Hongqin Wang Yifei Jiang Jiang Lou Wenjia Han Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower Advanced Science high Seebeck coefficient ionic liquids ionogel thermo‐electric materials multi‐functional sensors polyacrylic ester |
| title | Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower |
| title_full | Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower |
| title_fullStr | Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower |
| title_full_unstemmed | Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower |
| title_short | Cation‐Anchoring‐Induced Efficient n‐Type Thermo‐Electric Ionogel with Ultra‐High Thermopower |
| title_sort | cation anchoring induced efficient n type thermo electric ionogel with ultra high thermopower |
| topic | high Seebeck coefficient ionic liquids ionogel thermo‐electric materials multi‐functional sensors polyacrylic ester |
| url | https://doi.org/10.1002/advs.202414389 |
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