CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Juan Zeng,Liubing Dong,Wuxin Sha,Lu Wei,Xin Guo
Most developed flexible energy storage devices lack sufficient softness and toughness to tolerate various deformations, such as stretching, compressing, twisting, folding and puncturing, meanwhile guarantee a stable energy output required for the soft human-machine interfaces and intelligent wearable electronics. In this work, all-hydrogel soft supercapacitors consisting of reversibly deformable hydrogel electrodes and electrolyte are constructed without using additional stretchable substrate or separator membrane. Both electrode and electrolyte contain the same polyacrylamide/sodium alginate dual-network hydrogel matrix, making them possess superb self-adhesion due to hydrophilic interaction/hydrogen bonds, and highly softness/toughness thanks to the energy-dissipative mechanism. After adding carbon nanotube conductive network/electrode active material and electrolyte salt/redox couple in the hydrogel matrix, the newly developed supercapacitor with all-in-one architecture is intrinsically highly stretchable/compressible and can even be deformed arbitrarily under various severe stress-strain deformation conditions at device level, simultaneously deliver high areal capacitance (232 mF cm −2 at 5 mV s −1 and 128 mF cm −2 at 1 mA cm −2 ) and maintain stable energy output. The simple device architecture, novel structural components, steady mechanical properties combined with excellent electrochemical properties make the soft supercapacitors promising for truly wearable applications.
研究领域:
材料科学
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能源技术
·
软体机器人
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 10
·1909469
·
IF 16.836
Chenglong Chen,Jiangmin Jiang,Wenjie He,Wu Lei,Qingli Hao,Xiaogang Zhang
Wearable electronic devices are the new darling of consumer electronics, and energy storage devices are an important part of them. Here, a wearable lithium-sulfur (Li-S) bracelet battery using three-dimensional (3D) printing technology (additive manufacturing) is designed and manufactured for the first time. The bracelet battery can be easily worn to power the wearable device. The “additive” manufacturing characteristic of 3D printing provides excellent controllability of the electrode thickness with much simplified process in a cost-effective manner. Due to the conductive 3D skeleton providing interpenetrating transmission paths and channels for electrons and ions, the 3D Li-S battery can provide 505.4 mAh g −1 specific capacity after 500 cycles with an active material loading as high as 10.2 mg cm −1 . The practicality is illustrated by wearing the bracelet battery on the wrist and illuminating the red light-emitting diode. Therefore, the bracelet battery manufactured by 3D printing technology can address the needs of the wearable power supply.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Rongqi Xia,Weiye Zhang,Yingni Yang,Junqi Zhao,Yi Liu,Hongwu Guo
Transparent wood is a great potential biomass building material with good insulation and optical properties for the rapid growth building energy consumption and increasing environmental problems. Transparent wood enhanced with phase change heat storage function could effectively utilize sunlight and thermal energy to further improve energy efficiency. In this study, epoxy resin compound with phase change materials polyethylene glycol (PEG) were impregnated into the delignified wood to prepare novel transmittance energy storage wood (TESW). Fourier transform infrared spectroscopy and scanning electron microscope measurements proved that the TESW ternary interface performed favorable compatibility by cross-linking network structure and hydrogen bond combination, which improved the TESW anti-leakage stability and thermal energy storage efficiency. Differential scanning calorimetry experimental results combined with heat conduction mechanism showed that the energy storage performance of TESW improved with the increased PEG content. The TESW with 80 wt% PEG regulated economic optimality high latent heats of 134.1 and 122.9 J/g at 30.66 and 22.19 °C during the energy storage/release stage, respectively. Optical testing showed the TESW obtained high light transmittance up to 80.89%, this manifested that the addition of energy storage function has slight influence on the photopermeability. This research offered a novel way for green energy storage composites fabrication, and the obtained TESW exhibits advantages of energy storage capacity and optical properties are promising for building energy conservation and indoor thermal comfort improvement.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Fiber Materials
·
2022
·Vol. 4
·期 4
·820-831
·
IF 12.958
Liu Yongpeng,Wang Dan,Zhang Chao,Zhao Yan,Ma Piming,Dong Weifu,Huang Yunpeng,Liu Tianxi
Two-dimensional MXene has recently captured widespread research attention in energy storage and conversion fields due to its high conductivity, large specific surface area, and remarkable electro-activity. However, its performance is still hindered by severe self-restacking of MXene flakes. Herein, conductive Ti 3 C 2 T x /carbon nanofiber (CNF) composite aerogel with typical “layer-strut” bracing 3D microscopic architecture has been fabricated via synergistic assembly and freeze-drying process. In virtu of the strong interfacial interaction between polymeric precursor nanofibers and MXene mono-layers, gelation capability and 3D formability of Ti 3 C 2 T x is greatly reinforced, as resulted Ti 3 C 2 T x /CNF aerogels possess a highly ordered microporous structure with interlayered CNF penetrating between large size MXene lamellae. This special configuration guarantees the stability and pliability of the composite aerogels. Furthermore, the 3D form interconnected conductive network and the parallell alignment of the pores allow free electrical carriers motion and ion migration. As a result, the prepared Ti 3 C 2 T x /CNF aerogel-based electrode exhibits an exceptional gravimetric specific capacitance of 268 F g −1 at a current density of 0.5 A g −1 and an excellent cycling stability of 8000 cylcles, and the assembled symmetric supercapacitor, delivers a high energy density of 3.425 W h kg −1 at 6000 W kg −1 . This work offers a new route for the rational construction of 3D MXene assembly for advanced energy storage materials. Graphical abstract
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE COMMUNICATIONS
·
2015
·
IF 1.897
X.G. Fang,S.X. Lin,A.H. Zhang,X.B. Lu,X.S. Gao,M. Zeng,J.-M. Liu
Polarization switching and energy storage properties of a series of Pb 0.97 La 0.02 Zr 0.95 Ti 0.05 O 3 (PLZT) thin films deposited on (100)-textured LaNiO 3 (LNO)-buffered Si substrates and (111)-textured Pt/Ti/SiO 2 /Si substrates were investigated. It was revealed that the PLZT films deposited on the (100)-textured LNO-buffered Si substrates prefer the (100) textured structure, while the orientation of the films deposited on the (111)-textured Pt-coated Si substrates is random. With respect to the films on the Pt-coated Si substrates, the (100) textured PLZT films have bigger compressive residual stress, larger electrical polarization, better dielectric properties , and better energy storage performances. For the (100)-orientated PLZT films, the energy density ( W s ) and efficiency ( η ) measured at room temperature are about 15.3 J/cm 3 and 56% respectively. Moreover, the better frequency stability in the range from 20 Hz to 10 kHz, and temperature stability in the range from 25 to 270 °C are demonstrated in the (100)-orientated PLZT films. These results indicate that the PLZT films with LNO bottom electrode could be potential candidate for applications in high energy storage density capacitors.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2018
·
IF 13.12
Ming-Sheng Zheng,Yu-Ting Zheng,Jun-Wei Zha,Yu Yang,Peng Han,Yong-Qiang Wen,Zhi-Min Dang
The low permittivity of the polypropylene (PP) film has become a barrier for the further development of film capacitors with high energy storage density . An advanced strategy of the high-permittivity filler/polymer nanocomposite turns out to be a promising way of solving this problem. In this work, we coated ethylene propylene diene monomer (EPDM) as the shell on the surfaces of BaTiO 3 successfully to fabricate core-shell structural nanoparticles . The addition of surface rubberized BaTiO 3 into PP matrix promotes the permittivity to about 5.8, while the dielectric loss is barely changed as compared with PP itself. In addition, the elongation at break is as high as 364%, which is over 4 times higher than that of PP. The influences of shell thickness (3 nm, 5 nm and 7 nm) for the nanoparticles and hot-stretching process for the nanocomposite films were also carefully investigated, both of which greatly affected the properties of nanocomposites. Finally, the optimum breakdown strength as high as 370 MV/m is obtained, leading to a maximum energy density of 3.06 J/cm 3 , which can be attributed to both high breakdown strength and high permittivity of the core-shell structural BaTiO 3 /PP nanocomposites.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 21
·2200658
·
IF 6.389
Chunye Yang,Siyuan Lin,Wenqing Zhao,Yu Dong,Yueheng Qi,Shaohui Yuan,Zihao Zeng,Li Wang,Yue Yang,Peng Ge
Natural molybdenite (MoS 2 ) displays large interlayer distance and rich electrochemical activities, but suffers from the complex preparation process with serious pollution. MoS 2 , as the low-cost resources, have captured numerous attentions as first-hand energy-storage materials. However, they are still limited by the shuttling of polysulfide and side reactions. Through the in situ solution deposition and thermochemical methods, molybdenite@La 2 O 3 is successfully prepared with the formation of Mo S La bonds in the interfaces. La 2 O 3 , as the important catalyst, is uniformly distributed on the surface of molybdenite, which serves vital roles in the redox reversibility. Owing to the fascinating architecture, the as-obtained samples deliver a considerable capacity of 803.1 mA h g −1 , with high coulombic efficiency of 86.32%. After 500 cycles, the capacity increases up to ≈ 1200 mA h g −1 . Even at 5.0 A g −1 , its capacity can be remained ≈ 550 mA h g −1 after 100 cycles. Assisted by the detailed kinetic behaviors, the improved energy-storage capability mainly comes from the enhancements of pseudocapacitive behaviors. Moreover, benefiting from the detailed resistance analysis, the existing of La 2 O 3 can induce the evolution of redox reactions stability. Thus, the work is expected to provide effective modified strategy for natural molybdenite in energy-storage systems.
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
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zixi Wang,Zhongling Cheng,Yaru Zhang,Yingsong Yu,Xingxing Zhai,Zhiwei Zhao,Liu Hu,Yi Hu
The ever-increasing demand for light, thin, flexible, and small-sized smart electronics has developed a market for planar micro energy storage devices with high performance, flexibility, and robust integration, that is not mature yet. Here, a high-resolution patterned platinum (Pt) layer that can be designed/shaped as required is prepared by printing sacrificial patterns (SPs) using a commercial laser printer. MnO 2 -based micro-supercapacitors (MSCs) are successfully prepared on commercial Polyethylene terephthalate (PET) via electrodeposition . Because of the large surface area and large number of active sites of the nano-branch-shaped MnO 2 , the MnO 2 /Pt MSCs exhibit excellent volumetric specific capacitance (615.14F cm −3 ) as well as an ultrahigh volumetric power density (11.677 Wh cm −3 ) and energy density (54.679 mWh cm −3 ). In addition, the MnO 2 /Pt MSCs possess excellent flexibility and integration, with capacitance retention when bend to 180° and can be designed to connect in series or parallel for delivering the desired output voltage and capacitance. Furthermore, planar Zn-MnO 2 batteries are successfully prepared through step-by-step electrodeposition. Simultaneously, a flexible energy conversion storage system is constructed by connecting solar cells and electrical appliances with the fabricated MSCs, demonstrating that this straightforward strategy is extremely promising for future application in microcircuits and flexible wearable smart textiles.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Yi Wang,Zhiling Luo,Zhonghua Zheng,Xuhui Ye,Guanfeng Xue,Yongqiang Qian,Luzhuo Chen
Most exogenous electronic skins (e-skins) currently face challenges of complex structure and poor compatibility with the human body. Utilizing human secretions (e.g., sweat) to develop e-skins is an effective solution strategy. Here, a new kind of “sweat-driven” e-skin is proposed, which realizes energy-storage and thermal-management multifunctions. Through the layer-by-layer assembly of MXene-carbon nanotube (CNT) composite with paper, lightweight and versatile e-skins based on supercapacitors and actuators are fabricated. Long CNTs wrap and entangle MXene nanosheets, enhancing their long-distance conductivity. Furthermore, the CNT network overcomes the structural collapse of MXene in sweat, improving the energy-storage performance of e-skin. The “sweat-driven” all-in-one supercapacitor with a trilayer structure is patternable, which absorbs sweat as electrolyte and harnesses the ions therein to store energy, exhibiting an areal capacitance of 282.3 mF cm −2 and a high power density (2117.8 µW cm −2 ). The “sweat-driven” actuator with a bilayer structure can be driven by moisture (bending curvature of 0.9 cm −1 ) and sweat for personal thermal management. Therefore, the paper serves as a separator, actuating layer, patternable layer, sweat extractor, and reservoir. The “sweat-driven” MXene-CNT composite provides a platform for versatile e-skins, which achieve the interaction with humans and offer insights into the development of multifunctional wearable electronics.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jia Liu,Cuiying Ma,Xing Zhao,Ke Ren,Ruiying Zhang,Furong Shang,Huiling Du,Yiguang Wang
High-entropy (1− x )Bi 0.5 Na 0.5 K 0.5 Ba 0.5 Ca 0.5 TiO 3 - x BaTiO 3 (BNKBCT-BT, x = 0.02, 0.06, 0.10, 0.14 and 0.20) ceramics are successfully prepared via the solid-state reaction method. The XRD and Raman analyses reveal that all samples exhibit a pseudo-cubic phase structure. With increasing x , the a is gradually increased, resulting in the expansion of unit cell volume. A strong frequency dispersion appeared around T m , demonstrating that the as-prepared ceramics is a relaxor ferroelectric . Owing to the increase in the degree of lattice disorder, as well as relaxation and thermal evolution of PUs, the as-prepared ceramics exhibit a broad relaxor behavior. The Δ P is effectively increased by doping BT, which is conducive to achieving excellent energy storage properties. Moreover, W rec of all samples is more than 1.31 J/cm 3 and, at x = 0.20, W rec reaches the maximum value of 2.24 J/cm 3 at 140 kV/cm. These results indicate that high-entropy (1− x )BNKBCT- x BT ceramics are promising materials for energy storage applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Linsheng Huang,Ziyan Dong,Changhao Wu,Yue Ma,Limin Ruan,Wei Zeng,Siliang Wang,Yi Xiong,Chao Xu,Dong Liang
The wire electrical conduction is a traditional method to transfer carriers from external circuit into internal functional materials in electronic devices, yet these guest carriers suffer ineluctable dissipation on their traveling paths before contributing device performance. Hereof, a wireless electrostatic induction strategy is developed to activate native carriers just inside MXene-based electrochemical supercapacitive device for facilitating carrier utilization. Experimental and simulative results reveal that in the device domains permeated by atmospheric electric field, the native carriers are effectively excited not only in porous MXene material, but also in metallic foil substrate and ionic electrolyte, endowing a huge energy capacity of 541.6 F g − 1 , greatly larger than 258.5 F g − 1 implemented by wire conductive charge. Further, the inducing system is explored to detect the atmospheric electric field strength with the highest sensitivity of 14.42 m μA V − 1 and high linearity of 95.22% in ranging 0–1100 V m − 1 and is also utilized to sense contactless proximity stimulus with a high sensitivity of 7.01 μA m − 1 and high linearity of 97.9% in penetration depth ranging 0∼20 cm. These smart functions are also realized with prototype equipment for applicable exploration.
研究领域:
材料科学
·
电子工程
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Fei Yang,Denghui Shao,Taokai Liang,Mengzhe Hou,Bihui Zhang,Yizhuo Li,Weijin Hu,Xiaofang Li,Yanchun. Hu,Dawei Zhang,Xianwei Wang
The Pb 1–1.5x La x Zr 0.95 Ti 0.05 O 3 films with different La 3+ contents were successfully prepared on the LaNiO 3 /SiO 2 /Si substrates by sol-gel method. The effect of La 3+ doping on the microstructure, electrical properties, and energy storage performance of the films are systematically investigated. It is found that the introducing of La 3+ with a smaller tolerance factor could enhance the lattice distortion and compressive stresses, leading to smaller grain size, slimmer electric hysteresis loops, and lower phase transition field hysteresis. As a result, a relatively high energy storage density of 30.2 J/cm 3 together with the energy storage efficiency of 62.2% has been achieved in Pb 0.82 La 0.12 Zr 0.95 Ti 0.05 antiferroelectric thin films with the optimum doping content. This improvement is largely attributed to the enhanced breakdown field strength from 1442 kV/cm to 1564 kV/cm as a result of grain size reduction. Our results demonstrate the crucial role of decreased tolerance factor in stabilizing the antiferroelectric phase and enhancing the phase transition electric field, and provide an effective route to enhance the energy storage performance of antiferroelectric thin films.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）