Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Sun Xiaolong,Hou Yue,Zhu Zheng,Zhu Bo,Ding Qianfeng,Zhou Wenjie,Yan Sijia,Xia Zhanglong,Liu Yong,Hou Youmin,Yu Yuan,Wang Ziyu
Flexible thermoelectric devices enable direct energy conversion between heat and electrical energy, making them ideal for wearable electronics and personal thermal management. Yet, current devices lack functional module expansion, which limits the customization for diverse energy-harvesting heat sources and complicates their assembly to meet the specific power requirements of electrical appliances. Moreover, existing devices cannot be stacked to enhance thermoelectric cooling performance while maintaining flexibility and self-healing capabilities. Here, by selectively encapsulating liquid metal electrodes with carbon nanotube-doped self-healing materials with increased thermal conductivity, we substantially improve heat transfer across thermoelectric legs, thereby maximizing energy conversion efficiency. The device achieves a normalized power density of 3.14 μW ⋅ cm −2 ⋅ K −2 , setting a benchmark for self-healing thermoelectric devices. Benefiting from self-healing materials and liquid metal, the device demonstrates both self-healing capabilities and modular assembly, greatly expanding the application scenarios of flexible thermoelectric devices in wearable power generation and refrigeration.
研究领域:
材料科学
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能源技术
·
柔性电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 28
·2202238
·
IF 32.086
Yang Zheng,Tong Liu,Junpeng Wu,Tiantian Xu,Xiandi Wang,Xun Han,Hongzhi Cui,Xiaofeng Xu,Caofeng Pan,Xiaoyi Li
The triboelectric nanogenerator (TENG) is an emerging technology that offers excellent potential for the conversion of mechanical energy from rain into electricity for hybrid energy applications. However, a high-performance TENG is yet to be achieved because a quantitative analysis method for the energy conversion process is still lacking. Herein, a quantitative analysis method, termed the "kinetic energy calculation and current integration" (KECCI) method, which significantly improves the understanding of the mechanical-to-electrical energy conversion process, is presented. Based on the KECCI method, a high-performance TENG is developed by systematically optimizing a biomimetic surface structure and instant switch design, with 1.25 mA short-circuit current ( I sc ), 150 V open-circuit voltage ( V oc ), and a high energy-conversion efficiency of 24.89%. Furthermore, a multilayered TENG device is proposed for continuously harvesting the kinetic energy of raindrops for further improvement in the energy-conversion efficiency. Finally, the multilayered TENGs are integrated with organic photovoltaics, achieving all-weather energy harvesting. This work presents a validated theoretical basis that will guide further development of TENGs toward higher performances, which will promote the commercialization of hybrid TENG systems for all-weather applications.
研究领域:
能源材料科学
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纳米技术
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可再生能源
✓ 已验证
DOI
高影响因子
Joule
·
2024
·
IF 38.6
Xingcheng Li,Shuang Gao,Xin Wu,Qi Liu,Leilei Zhu,Chenyue Wang,Yangkai Wang,Zheng Liu,Wenjing Chen,Xinyu Li,Peng Xiao,Qiuping Huang,Tao Chen,Zhenyu Li,Xingyu Gao,Zhengguo Xiao,Yalin Lu,Xiaocheng Zeng,Shuang Xiao,Zonglong Zhu,Shangfeng Yang
Crystallization orientation and the buried interface have been proven to be key factors determining the efficiency of perovskite solar cells (PSCs). Here, we report a facile strategy to concomitantly induce (100)-oriented perovskite and improve buried interface by incorporating a bifunctional ligand 2-(methylthio) ethylamine hydrochloride (METEAM) into perovskite precursor solution. METEAM molecules preferentially adsorb on (100) facets of perovskite via strong interactions with perovskite lattice to induce oriented perovskite crystallization. Meanwhile, METEAM molecules spontaneously aggregate at the buried interface and operate as a bridge between the perovskite and tin oxide (SnO 2 ) electron transport layer to bidirectionally passivate their defects. As-prepared perovskite films exhibit suitable energy level and high mobility for interfacial charge transfer, low trap state density, and long carrier lifetime. The resultant conventional-structure PSC devices deliver a power conversion efficiency (PCE) of 26.1% (certified 25.8%) with improved operational and ambient stabilities, which is among the highest PCE of conventional PSCs.
研究领域:
材料科学
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光伏技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 10
·3387-3394
·
IF 0
Hua Ye,Xiaowen Hu,Zhixiong Jiang,Dongcheng Chen,Xin Liu,Han Nie,Shi-Jian Su,Xiong Gong,Yong Cao
A series of water/alcohol-soluble small molecules based on electron-deficient pyridinium salts namely BTPS, BnPS and F8PS were successfully synthesized. Their photophysical and electrochemical properties were thoroughly studied. Due to its good film-forming ability, F8PS was employed as a cathode interlayer in an organic photovoltaic cell. Simultaneous enhancements in open-circuit voltage (Voc), short circuit current density (Jsc) and fill factor (FF) were achieved, and the power conversion efficiency (PCE) was increased from 4.32% to 6.56% compared to the device based on the bare Al cathode. Voc was significantly improved from 0.76 V to 0.94 V, and it is one of the best results reported in literature to date for polymer solar cells (PSCs) based on the active layer of poly [N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′- di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT):[6,6]-phenyl-C71-butyric acid methylester (PC71BM). The greatly increased Voc may be due to the interface dipoles generated by F8PS. It was also demonstrated that post treatment of the active layer with ethanol gave an improvement of the overall device efficiency from the initial 4.32% to 5.55%, compared to the device with the bare Al cathode. Therefore, the improvement in performance after pyridinium salt deposition may be due to a combination of the effects of ethanol treatment and the presence of the thin pyridinium salt layer. The good water/alcohol solubility, ideal HOMO/LUMO energy levels and the excellent electron transfer/collection ability of the hydrophilic pyridinium salt derivatives makes them a promising family of electron transport materials for highly efficient PSCs.
研究领域:
材料科学
·
光电化学
✓ 已验证
DOI
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Jiyan Li,Xu Zhou,Peng Mu,Fei Wang,Hanxue Sun,Zhaoqi Zhu,Junwei Zhang,Weiwen Li,An Li
The creation of solar steam generators with both high energy conversion efficiency and desired salt-resistant performance is essential for practical desalination. Herein, we report for the first time the fabrication of polypyrrole-coated biomass porous foam as efficient solar steam generators. The as-prepared foams possess a low thermal conductivity of 0.022 W M–1 K–1 for alkali-treated corn straw (CSA) and 0.027 W M–1 K–1 for both microwave- and alkali-treated corn straw (CSMA). Based on their high light absorption (95–100%), superhydrophilic wettability, excellent thermal insulation, and unique aligned channels, the foams show excellent energy conversion efficiency of 89.74, 91.08, and 91.54% for the polypyrrole-coated CSA (P-CSA) and 96.8, 97.05, and 98.32% for the polypyrrole coated CSMA (P-CSMA) at light intensities of 1, 2, and 3 kW m–2, respectively. Importantly, thanks to their aligned hierarchical channels, our generators show extraordinary salt-resistant performance, e.g., the energy conversion efficiencies of P-CSA and P-CSMA were measured to be 62.30 and 94.7% in 20 wt % NaCl at 1 kW m–2 irradiation, respectively. Furthermore, no obvious salt accumulation was observed after 30 d of continuous operation at real sunlight irradiation, implying an outstanding long-term stability for practical solar steam generation.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2019
·
IF 6.019
Zhenkui Li,Man Zheng,Na Wei,Yuan Lin,Wenlong Chu,Ruiqi Xu,Huanhuan Wang,Jian Tian,Hongzhi Cui
The design and synthesis of solar steam generation materials is a green and promising approach to produce freshwater from seawater or contaminated water. Here, we develop a highly efficient and stable bilayer evaporator by assembling WO 3-x nanorods (WO 3-x NRs) onto a wood surface. Due to the broad-band absorption of the WO 3-x NRs and the multiscatter of the incident light caused by the wood, the prepared solar evaporator with unique light trapping structures shows a high solar absorption (~94.0%). Additionally, combining with the merits of rapid water transport and heat localization , the energy conversion efficiency of the evaporator reaches as high as 82.5% under one sun irradiation and shows a stable water generation capability during long-term illumination cycles, which is one of the best performance compared with other wood-based materials and oxygen-defected tungsten oxide. The evaporator also shows great performance towards the evaporation of seawater and contaminated water, indicating great potential application. This work can provide reference for designing other high photothermal conversion system.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2019
·
IF 4.674
Shi Tian,Jing Li,Saisai Li,Tongle Bu,Yanping Mo,Song Wang,Wangnan Li,Fuzhi Huang
Organic-inorganic hybrid halide perovskite solar cells (PSCs) have shown the potential for the commercialization due to its high efficiency and low cost. How to scale up the module nowadays becomes a great challenge. Anti-solvent assisted crystallization is one of the most widely used methods to obtain pinhole-free homogeneous perovskite films owing to its advantage of low cost and simple process. The commonly used anti-solvents are toxic, such as chlorobenzene and toluene. Herein, we have made an effort to find a green solvent engineering by the anti-solvent bath to produce large area uniform perovskite films. Compared to the traditional solvent processed perovskite films, the films produced by n-butyl alcohol soaking exhibit smoother surface and superior performance. A moderate concentration of FAI/MABr has been added in the n-butyl alcohol solution to compensate for the loss of FAI/MABr during the soaking step. By this means, it alleviates the phenomenon of cracks on the perovskite surface, which exhibited a champion efficiency of 17.67% for PSCs with small area of 0.16 cm 2 and a PCE of 13.85% for 10 cm × 10 cm perovskite solar modules.
研究领域:
材料科学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2015
·Vol. 21
·期 36
·12728-12734
·
IF 5.731
Di Bao,Peng Gao,Xinyang Zhu,Shuchao Sun,Ying Wang,Xiaobo Li,Yujin Chen,Han Zhou,Yanbo Wang,Piaoping Yang
Graphical A place in the sun : One dimensional ZnO/ZnS heterostructured nanorod arrays exhibit good performance in photocatalytic hydrogen evolution, and their energy conversion efficiency reaches 13.9 % at room temperature. Semiconducting heterostructures have been widely applied in photocatalytic hydrogen evolution due to their variable band gaps and high energy conversion efficiency. As typical semiconducting heterostructures, ZnO/ZnS heterostructured nanorod arrays (HNRAs) have been obtained through a simple anion-exchange process in this work. Structural characterization indicates that the heterostructured nanorods (HNRs) are all composed of hexagonal wurtzite ZnO core and cubic zinc-blende ZnS shell. As expected, the as-obtained one-dimensional heterostructures not only lower the energy barrier but also enhance the separation ability of photogenerated carriers in photocatalytic hydrogen evolution. Through comparisons, it is found that 1D ZnO/ZnS HNRAs exhibit much better performance in photocatalytic hydrogen evolution than 1D ZnO nanorod arrays (NRAs) and 1D ZnS NRAs. The maximum H 2 production is 19.2 mmol h −1 for 0.05 g catalyst under solar-simulated light irradiation at 25 °C and the corresponding quantum efficiency is 13.9 %, which goes beyond the economical threshold of photocatalytic hydrogen evolution technology.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Huanmei Ma,Jianhua Tian,Shuming Bai,Xiaodong Liu,Zhongqiang Shan
In this paper, Pt-Ru/Ni-P/FTO has been designed and fabricated as the counter electrode for dye-sensitized solar cells. The Pt-Ru catalytic layer and Ni-P alloy sublayer are prepared by traditional electrodeposition method and a simple electroless plating method, respectively, and the preparation conditions have been optimized. The scanning electron microscopy (SEM) images show that the Pt-Ru particles are evenly distributed on FTO and Ni-P/FTO substrate. By X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), it is confirmed that the Ni-P amorphous alloy has been formed, and no other compounds involved Ni and P have been formed. The electrochemical measurement results reveal that the Pt-Ru electrode has higher catalytic activity and stability towards tri-iodine reduction reaction than Pt electrode in the organic medium. The Ni-P sublayer deposited on FTO glasses increases the conductivity and light-reflection ability of the counter electrode, and this contributes to lowering the inner resistance of the cell and improving the light utilization efficiency. Through the photovoltaic test, it is confirmed that the energy conversion efficiency of a single DSSC with the optimized Pt-Ru/Ni-P/FTO counter electrode is increased by 29% compared with that of the cell based on the Pt/FTO counter electrode under the same conditions.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Bo Xiao,Xin Li,Zijun Yi,Yubo Luo,Qinghui Jiang,Junyou Yang
Tin oxide (SnO2) has been commonly used as an electron transport layer (ETL) in planar perovskite solar cells (p-PSCs) because it can be prepared by a low-temperature solution-processed method. However, the device performance has been restricted due to the limited electrical performance of SnO2 and its mismatched energy level alignment with the perovskite absorber. Considering these problems, sodium tungstate (Na2WO4) has been employed to modify the SnO2 ETL. The conduction band minimum of SnO2 increases and the defects at the ETL/perovskite interface decrease by the modification of the SnO2 ETL with Na2WO4, thus reducing the energy barrier between the ETL and perovskite. In addition, the electron extraction ability has been enhanced and the interface recombination between the ETL and perovskite has also been inhibited. As a result, the photovoltaic performance of p-PSCs based on the modified ETL has been improved, and a champion power conversion efficiency of 21.16% has been achieved compared with the control device of 17.30% with an open circuit voltage increased from 1.075 to 1.162 V.
研究领域:
材料科学
·
能源技术
·
光电领域
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED THERMAL ENGINEERING
·
2023
·
IF 6.4
Zhenchong Xiao,Yu Shi,Liang Zhang,Jun Li,Qian Fu,Xun Zhu,Qiang Liao
Non-aqueous thermally regenerative battery (non-aqueous TRB) operating at voltages above 1 V is a promising technology for converting low-grade waste heat into electrical energy. To improve the power generation of non-aqueous TRB, the operating parameters that affect the performance of non-aqueous TRB, including the membrane type, electrode materials, acetonitrile volume fraction and electrolyte flow rate were investigated through experimental research. In addition, the thermal-to-electric efficiency of non-aqueous TRB system with different acetonitrile volume fraction and active species concentration was investigated by theoretical calculation. Because of the enhanced active species transport, the optimized maximum power density value of 235 W m −2 was achieved with the use of an anion exchange membrane, reticulated vitreous carbon as the anode electrode, etched carbon felt as the cathode electrode, acetonitrile fraction of 70 %, and electrolyte flow rate of 35 mL min −1 . Moreover, theoretical thermal efficiency of 6.6 % was calculated with consisting of 10 % acetonitrile and 0.5 M active species. The above optimized performance in this study is competitive and promotes the development and application of TRBs.
研究领域:
能源科学
·
材料科学
·
热力学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2024
·
IF 2.5
Jitao Zhang,Xingkui Mu,Qingfang Zhang,Natallia Poddubnaya,Dmitry Filippov,Jiagui Tao,Fang Wang,Liying Jiang,Lingzhi Cao
Development of high-quality ferrites behaved enhanced properties via inclusion of ions in 3d n and 4f n series are desirable for efficient power conversion solid-state devices. Nevertheless, inadequate microscopic behaviors with complex chemistry in materials enables researchers to design and produce the macroscopic target device that remained rudimentary and mindless. In this work, the microscopic properties in nickel-zinc spinel ferrite series of Ni 0.8 Zn 0.2 Sm x Fe 2- x O 4 ( x = 0, 0.02, 0.04, 0.06, 0.08) encompassing XRD, SEM, EDS, VSM, FTIR and ESR were systemically characterized, and the evolutionary mechanism of the corresponding structural, micro-structure, elemental composition and distribution, magnetic, cations exchange, and micro-magnetic behavior was profoundly revealed. Under microscopic examinations, the optimum composition at x = 0.02 with well-arranged spinel structure, dense texture with expected elemental composition, favorable soft magnetic properties and micro-magnetic behaviors is evident. Fortunately, this optimum is in coincidence with the achievable maximum magneto-mechanical coefficient, even the macroscopic electric properties with stronger magnetoelectric (ME) interactions and higher power conversion efficiency (PE) in tri-layered ME samples as expected. Experimental results show that the eventual PE reaches its maximum of 75.67 % under R opt = 33kΩ for samples at x = 0.02, and exhibit a 2.24 times higher PE than that of sample without samarium substitution. These findings provide a holographic perspective to connect the microscopic beneficial effects of materials to bulk device that are promising for efficient power conversion solid-state electronics.
研究领域:
材料科学
·
磁性材料
·
固态电子学
·
功能陶瓷
·
能源转换技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）