AI Article Synopsis
- Low-grade heat can be converted into electricity using gel-state thermogalvanic cells (GTCs), but these cells struggle with low ionic conductivity and mechanical strength.
- A new design using bacterial cellulose (BC) nanofibers improves the thermopower and mechanical properties of GTCs, achieving impressive conductivity and output power.
- By connecting 15 BC-GTC units, an output voltage of 3.35 V was reached at a 65 K temperature gradient, capable of powering various electronic devices, encouraging sustainable energy solutions.
Article Abstract
Low-grade heat exists ubiquitously in the environment, and gel-state thermogalvanic cells (GTCs) can directly convert thermal energy into electricity by a redox reaction. However, their low ionic conductivity and poor mechanical properties are still insufficient for their potential applications. Here, we designed a bacterial cellulose (BC) nanofiber-macromolecular entanglement network to balance the GTC's thermopower and mechanical properties. Therefore, the BC-GTC shows a Seebeck coefficient of 3.84 mV K, an ionic conductivity of 108.5 mS cm, and a high specific output power density of 1760 μW m K, which are much higher than most current literature. Further connecting 15 units of BC-GTCs, the output voltage of 3.35 V can be obtained at a temperature gradient of 65 K, which can directly power electronic devices such as electronic calculators, thermohydrometers, fans, and light-emitting diodes (LEDs). This work offers a promising method for developing high-performance and durable GTC in sustainable green energy.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.3c02870 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The characteristics of temperature-responsive ionic liquids on the integrated operational effectiveness of water reclamation from semiconductor wastewater using forward osmosis.
Chemosphere
January 2025
Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan, ROC; Center for Sustainability and Energy Technologies, Chang Gung University, Taoyuan 33323, Taiwan, ROC; Biochemical Technology R&D Center, Ming Chi University of Technology, New Taipei City, 243303, Taiwan, ROC; Chronic Diseases and Health Promotion Research Center, Chang Gung University of Science and Technology, Chiayi 61363, Taiwan, ROC. Electronic address:
Large amounts of wastewater are produced from semiconductor manufacturing, and the production energy consumption has skyrocketed with its global demand in recent years. Forward osmosis (FO) provides unique merits in reclaiming the wastewater if suitable draw solutes with high water flux, low leakage, and limited energy requirement in regeneration are available. Two lower critical solution temperature-ionic liquids (LCST-ILs), tetrabutylphosphonium trimethylbenzensulfonate ([P][TMBS]) and tetrabutylphosphonium maleate ([P][Mal]) were synthesized and systematically assessed as recycled draw solutes in FO for the water reclamation from the wastewater of Si-ingot sawing.
View Article and Find Full Text PDFEnhanced Ammonia Capture for Adsorption Heat Pumps Using a Salt-Embedded COF Aerogel Composite.
Gels
November 2024
School of Mechanical and Aerospace Engineering, Gyeongsang National University, Jinju 52828, Republic of Korea.
Adsorption heat pumps (AHPs) have garnered significant attention due to their efficient use of low-grade thermal energy, eco-friendly nature, and cost-effectiveness. However, a significant challenge lies in developing adsorbent materials that can achieve a high uptake capacity, rapid adsorption rates, and efficient reversible release of refrigerants, such as ammonia (NH). Herein, we developed and synthesized a novel salt-embedded covalent organic framework (COF) composite material designed for enhanced NH capture.
View Article and Find Full Text PDFPerformance Enhancement by Integrating the Ionic Thermoelectric Generator with a Photovoltaic Cell.
ACS Appl Mater Interfaces
January 2025
Department of Flexible Sensing Technology, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China.
The global solar market is booming with a rapid growth in installed integrated devices, while photovoltaic (PV) systems are suffering from waste heat, which causes the decline of the photovoltaic conversion efficiency (PCE). This study presents the seamless integration of the ionic thermoelectric generator (iTEG) layer with traditional PV modules, facilitating the exploitation of waste heat and augmenting the overall power output. Experimental results validate the effectiveness of the iTEG, demonstrating substantial power generation and a consistent energy output.
View Article and Find Full Text PDFArchitecting Ultra-Robust Zr(IV) Metal-Organic Framework for Energy-Efficient Desiccant Air Conditioning.
J Am Chem Soc
January 2025
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Air-conditioning systems, composed mainly of humidity control and heat reallocation units, play a pivotal role in upholding superior air quality and human well-being across diverse environments ranging from international space stations and pharmacies to granaries and cultural relic preservation sites, and to commercial and residential buildings. The adoption of sorbent water as the working pair and low-grade renewable or waste heat in adsorption-driven air-conditioning presents a state-of-the-art solution, notably for its energy efficiency and eco-friendliness vis-à-vis conventional electricity-driven vapor compression cycles. Here, we introduce a rational π-extension strategy to engineer an ultrarobust and highly porous zirconium metal-organic framework (Zr-MOF).
View Article and Find Full Text PDFRealization of Hydrogel Electrolytes with High Thermoelectric Properties: Utilization of the Hofmeister Effect.
ACS Appl Mater Interfaces
December 2024
State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, P. R. China.
Ionic thermoelectric materials, renowned for their high Seebeck coefficients, are gaining prominence for their potential in harvesting low-grade waste heat. However, the theoretical underpinnings for enhancing the performance of these materials remain underexplored. In this study, the Hoffmeister effect was leveraged to augment the thermoelectric properties of hydrogel-based ionic thermoelectric materials.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!