Nature Communications
·
2024
·Vol. 15
·期 1
·1-15
·
IF 14.7
He Pei,Yue Junyu,Qiu Zhennan,Meng Zijie,He Jiankang,Li Dichen
Electric eel is an excellent example to harness ion-concentration gradients for sustainable power generation. However, current strategies to create electric-eel-inspired power sources commonly involve manual stacking of multiple salinity-gradient power source units, resulting in low efficiency, unstable contact, and poor flexibility. Here we propose a consecutive multimaterial printing strategy to efficiently fabricate biomimetic ionic hydrogel power sources with a maximum stretchability of 137%. The consecutively-printed ionic hydrogel power source filaments showed seamless bonding interface and can maintain stable voltage outputs for 1000 stretching cycles at 100% strain. With arrayed multi-channel printhead, power sources with a maximum voltage of 208 V can be automatically printed and assembled in parallel within 30 min. The as-printed flexible power source filaments can be woven into a wristband to power a digital wristwatch. The presented strategy provides a tool to efficiently produce electric-eel-inspired ionic hydrogel power sources with great stretchability for various flexible power source applications.
研究领域:
材料科学
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生物医学工程
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED ENERGY
·
2020
·
IF 8.848
Qianyang Chen,Qianyuan Qiu,Xiaomin Yan,Mingyang Zhou,Yapeng Zhang,Zhijun Liu,Weizi Cai,Wei Wang,Jiang Liu
The direct carbon solid oxide fuel cell is a potential technology that efficiently and cleanly converts the chemical energy of solid carbon into electricity. Its superiority of all-solid-state configuration and unique operating mechanism indicate that it has a good application prospect in high energy density portable or backup power supplys. It can also be used to convert coal into electrical power. Here, for the first time, we report a compact direct carbon solid oxide fuel cell stack with 12 cells fabricated on a single 10 × 10 cm electrolyte plate. The plate covers a container filled with solid carbon-rich fuel to form a stack. No sealant and pipelines are needed and the carbon-rich fuel can be reloaded. Both activated carbon and sawdust of bauhinia tree branch are used as the fuel. The output power of such a stack approaches more than 10 W at 800 °C. Using 15 g of 5 wt% Fe-loaded activated carbon as the fuel, a stack discharging at a constant current of 1.5 A outputs an energy of 29 Wh, correspongding to an energy desnity of carbon of ∼2000 Wh kg −1 . This work shows the feasibility of developing direct carbon solid oxide fuel cell into a compact electricity generator using readily available carbon-rich fuels. It also shows promise of using this technology in clean and efficient conversion of coal to electricity.
研究领域:
能源工程
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材料科学
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环境科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Chunjiao Qi,Jintao Chen,Yuhui Shang,Yu Yang,Kangyan Wang,Jinyang Chen
Point-of-care (POC) tests increasingly highlight the importance of portable, cost-effective, and visually quantitative detection of biomarkers. Herein, we developed a power-free and visual signal-readout POC sensor based on the target-triggered ultrafast gelation process. In the gelation process, the target triggered the cascade reaction catalyzed by oxidase and ferrous glycinate to produce carbon radicals that immediately initiated the rapid polymerization and cross-linking of acryloylated chondroitin sulfate and dimethylacrylamide. This highly efficient enzymatic polymerization process contributed to the ultrafast generation of chondroitin hydrogel within 1 min at 25 °C. The increase in viscosity of aqueous solution resulted from hydrogel formation was then visually measured according to the distance of solution migration on a tick-labeled pH test strip, which thus realized the quantification of a target. By utilizing glucose oxidase as an oxidase model during the gelation process, this POC sensor was successfully employed in the rapid quantitative detection of glucose without the need for any auxiliary instruments. Benefiting from the specificity and stability of the enzymatic polymerization reaction, the sensor exhibited excellent performance in the detection of glucose in clinical blood samples. Moreover, the sensor was further extended to uric acid detection and enabled accurate assay in clinical urine samples, which indicated the versatility and practicability of this sensor in the POC test.
研究领域:
生物化学
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医学诊断
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2024
·
IF 14
Yuankun Ye,Xiaoyang Wei,Li Zhang,Sen Wang,Zhi Fang
Sustainable nitrogen fixation driven by renewable energy sources under mild conditions has been widely sought to replace the industrial Haber-Bosch process. The fixation of nitrogen in the form of NO x − and NH 4 + into aqueous solutions using electricity-driven gas–liquid discharge plasma is considered a promising prescription. In this paper, a scalable bubble discharge excited by nanosecond pulse power is employed for nitrogen fixation in the liquid phase. The nitrogen fixation performance and the mechanisms are analyzed by varying the power supply parameters, working gas flow rate and composition. The results show that an increase in voltage and frequency can result in an enhanced NO 3 − yield. Increases in the gas flow rate can result in inadequate activation of the working gas, which together with more inefficient mass transfer efficiencies can reduce the yield. The addition of O 2 effectively elevates NO 3 − production while simultaneously inhibiting NH 4 + production. The addition of H 2 O vapor increases the production of OH and H, thereby promoting the generation of reactive nitrogen and enhancing the yield of nitrogen fixation. However, the excessive addition of O 2 and H 2 O vapor results in negative effect on the yield of nitrogen fixation, due to the significant weakening of the discharge intensity. The optimal nitrogen fixation yield was up to 16.5 μmol/min, while the optimal energy consumption was approximately 21.3 MJ/mol in this study. Finally, the mechanism related to nitrogen fixation is discussed through the optical emission spectral (OES) information in conjunction with the simulation of energy loss paths in the plasma by BOLSIG + . The work advances knowledge of the effect of parameter variations on nitrogen fixation by gas–liquid discharge for higher yield and energy production.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Science Bulletin
·
2025
·
IF 21.1
Chuanchao Sheng,Wei Li,Sixie Yang,Xiaowei Mu,Xinyi Sun,Hang Liu,Haoshen Zhou,Ping He
Outdoor activities like mountain marathons and field expeditions often occur in harsh environments where maintaining power and body temperature are crucial for survival. Warm pastes are commonly used to provide warmth in cold conditions, but their potential as a portable power source has not been fully explored. This research develops an innovative approach to convert warm-paste chemical energy into electrical power for emergencies. By designing a hydrogel-based iron–air battery with a low-temperature-resistant electrolyte, researchers created a battery capable of operating in low temperatures. Experimental results showed the battery generating 0.98 V of voltage and 2.68 Ah of capacity. The battery can be manually assembled using original warm paste materials and connected in series to power electronic devices like mobile phones, providing a vital communication tool in emergencies. This breakthrough offers a promising solution for enhancing safety and survival during outdoor activities.
研究领域:
材料科学
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能源技术
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户外安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2022
·
IF 20.831
Pei He,Jiankang He,Ziyao Huo,Dichen Li
Electric eels in nature can generate high voltage with hundreds of volts based on the mechanism of gradient-induced ion flux, which provides an excellent prototype to inspire the exploration of more efficient and green energy generation strategies in artificial systems. Here we developed a novel microfluidics-based strategy to efficiently fabricate flexible ionic hydrogel batteries by mimicking ion-concentration gradients in biological organs. Microfluidic networks were designed to simultaneously transport four types of ionic hydrogel solutions into pre-defined well arrays and enable the perfusion of 801 hydrogel precursor wells within 1.53 min. A specifically-designed photomask was used to selectively solidify these precursors into separate hydrogel particles, which were further assembled into a flexible ionic hydrogel battery pack by using negative pressure. The voltage output of the resultant ionic hydrogel battery pack was found to increase linearly with the increase of battery unit number, and a maximum voltage of 73.33 V can be achieved by connecting eight ionic hydrogel battery packs in series. The resultant ionic hydrogel battery exhibited unique capability in stably working in wide temperature ranges (0–90°C) and large deformation conditions, and can be further preserved for a long period after dehydration and instantly recover its original discharge capacity once rehydrated. PEDOT:PSS was introduced to the ionic hydrogel battery for reduced internal resistance, resulting in a 1.5-fold improvement in electrical current output. The presented microfluidics-based and high-efficient fabrication strategy exhibits great promise to translate the biomimetic flexible power-generating systems into a viable soft power source for various electrically-driven applications.
研究领域:
生物工程
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材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Xinyue Kang,Jiatian Song,Jiuzhou Liu,Siwei Cao,Zhengmeng Lin,Hongyu Jiang,Yiqing Yang,Xiangran Cheng,Yulu Ai,Xuemei Sun,Kaiwen Zeng,Zhengfeng Zhu,Huisheng Peng
Fiber gel dye-sensitized solar cells (FGDSCs) are recognized as an effective solution for high-performance, durable and safe wearable power supply. However, poor and unstable interfaces between fiber electrodes and gel electrolytes are bottleneck problems that have restricted the photovoltaic performances of FGDSCs and their stabilities during deformations. Here, an FGDSC with stable interlaced interfaces is designed by incorporating polymerized gel electrolyte into the aligned channels in fiber electrodes and the gaps between photoanode and counter electrode in situ. The interlaced structure of gel electrolyte in FGDSC improves the interfacial stability and provided stable channels for rapid ion diffusions, offering efficient charge transports at interfaces. The resulting FGDSC thus produced a high power conversion efficiency of 7.95%, and it is further maintained by over 90% after bending for 5000 cycles. These FGDSCs can be integrated with fiber batteries as a self-charging power system, demonstrating an effective power solution for wearables.
研究领域:
材料科学
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能源材料
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太阳能技术
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可穿戴技术
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Wei Zhang,Hanxiao Zhang,Yuyan Zhou,Can Wang,Jiulong Sha
Moist-electric generators (MEG), which extract energy from ambient moisture, offer a potential solution to the escalating energy crisis. However, current MEG technologies encounter significant challenges, including pulsed output and limited power generation capacity. In this study, a heterogeneous hydrogel-based MEG (H-MEG), incorporating both hydrophilicity and double ion concentration gradients, was developed. A single H-MEG device (1 × 1 cm2) achieved a maximum open-circuit voltage (VOC) of 0.64 V and a short-circuit current (ISC) of 72.12 μA at 80% relative humidity. Furthermore, by employing series and parallel integration of H-MEG banks, enhanced performance was achieved with voltages of 6.62 V and currents of up to 670.86 μA, respectively. These scalable H-MEG devices could directly power commercial electronic devices, including light-emitting diodes and commercial calculators. This study proposes a cost-effective and highly efficient approach for harvesting electricity from moist air, significantly contributing to the advancement of green power sources.
研究领域:
材料科学
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能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 33
·期 4
·2210637
·
IF 19.924
Zichuan Liu,Zhigang Xia,Jianyu Huang,Qi Wang,Jiaxin Liu,Zhenhua Wu,Weilin Xu,Bin Su
Electrochemical degradation is a commonly used strategy to remove organic contaminations in water. However, in some remote areas where electricity is insufficient, electrochemical degradation may become ineffective due to the absence of a power supply. Here, a unique self-powered electrochemical system (SPES) is proposed to accomplish the power-free degradation of tetracyclines (TCs) and organic dyes in water with the assistance of flexible magnetoelectric flag generators (MFGs). These MFGs convert wind energy into electricity. Under a wind speed of 6.3 m s −1 , a 22 × 30 cm 2 MFG yields a peak open-circuit voltage of 3.5 V and an ultra-high peak short-circuit current of ≈13 mA. A suchlike MFG charges large capacitors of 5 F to 1 V in 184 min. Powered by a series of MFGs, 5 ppm of tetracycline hydrochloride (TCH) or organic dyes in water are totally degraded with SPES in only 10 min. Moreover, the MFG is fully foldable and portable, which is well-suited for the migrating feature of the nomadic people in remote areas. The study opens up a new solution to the persistent problem of TCs contamination in natural waters in some remote regions where electricity is lacking.
研究领域:
环境科学
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电化学工程
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可再生能源
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Feng Han,Duanzhi Duan,Weixuan Jing,Qian Wu,Bian Tian,Zhongkai Zhang,Junshan Liu,Yu Sun,Zhuangde Jiang
Graphene fiber-based supercapacitor has aroused great interest as a flexible power source in future wearable electronics. However, the low electrochemical performance of graphene fibers (GFs) usually causes the serious limitation of use in practical applications due to the material stacking, hydrophobicity and fabrication process complexity. In this work, a facile and effective plasma-assisted strategy is put forward to increase specific surface area, tune hierarchically porous structure and promote wettability of nitrogen-doped graphene fibers (NGFs), resulting in the improvement of electrochemical performance. The supercapacitor assembled from plasma-treated NGFs shows superior capacitance (878 mF/cm 2 at 0.1 mA/cm 2 current density) and high energy density (19.5 μW h/cm 2 at 40 mW/cm 2 power density), which is 23.7% and 131.4% higher than that of NGFs and GFs, respectively. Additionally, the fiber-based supercapacitor based on plasma-treated NGFs exhibits high rate capability of 59.8% and excellent cyclic performance (95.8% retention over 10,000 cycles). These plasma-treated NGFs can be promising candidates for high-performance and flexible power sources in future wearable electronics.
研究领域:
材料科学
·
能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Bailin Gai,Qinglong Jing,Yanan Ji,Runze Wu,Qi Li,Xuexia He,Jie Sun,Ruibin Jiang,Zhibin Lei,Zong-Huai Liu
In the present work, a new strategy to prepare Ti 3 C 2 T x aerogel fiber with ultralight, highly orientated and excellent gravimetric capacitance is proposed, it consists of wet spinning of self-assembling liquid crystal phase Ti 3 C 2 T x ink with waterborne polyurethane (WPU) as a functional additive in chitosan coagulated bath and followed by bidirectional freeze-drying process with Cu bridge as thermal conductive substrate, and Ti 3 C 2 T x /WPU (T/W) aerogel fiber with ultralight, highly orientated, good tensile strength, excellent gravimetric capacitance and rate performance is prepared. T/W-1 aerogel fiber electrode exhibits a low density of 0.15 g cm −3 , excellent gravimetric capacitance of 402 F g −1 at 1 A g −1 and an outstanding rate performance of 82 % at 10 A g −1 . All-solid-state Ti 3 C 2 T x aerogel fiber supercapacitor (T/W-1 aerogel FSC) with ultralight, good flexibility and high gravimetric capacitance is assembled, it not only shows a gravimetric capacitance of 124 F g −1 and an energy density of 6.2 Wh Kg −1 at a power density of 150.0 W kg −1 , but also displays a capacity retention of 97 % after 100 bending times at 180°. The impressing ultralight, good flexibility and high gravimetric capacitance make T/W-1 aerogel FSC a promising flexible power source in the fields of portable and wearable electronic devices.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Li Zhiwei,Xu Yinghong,Wu Langyuan,Cui Jiaxin,Dou Hui,Zhang Xiaogang
Flexible power supply devices provide possibilities for wearable electronics in the Internet of Things. However, unsatisfying capacity or lifetime of typical batteries or capacitors seriously limit their practical applications. Different from conventional heat-to-electricity generators, zinc ion thermal charging cells has been a competitive candidate for the self-power supply solution, but the lack of promising cathode materials has restricted the achievement of promising performances. Herein, we propose an attractive cathode material by rational heterostructure engineering of hydrated vanadium pentoxide. Owing to the integration of thermodiffusion and thermoextraction effects, the thermopower is significantly improved from 7.8 ± 2.6 mV K −1 to 23.4 ± 1.5 mV K −1 . Moreover, an impressive normalized power density of 1.9 mW m −2 K −2 is achieved in the quasi-solid-state cells. In addition, a wearable power supply constructed by three units can drive the commercial health monitoring system by harvesting body heat. This work demonstrates the effectiveness of electrodes design for wearable thermoelectric applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）