iScience
·
2025
·
IF 4.1
Jie Zhou,Xiang Zhang,Yuming Yao,Tingting Yang
Developing moist-electric array device using screen printing technology that meets mass customization, high power output and wearable capabilities is very attractive for sustainable mobile power. However, the design of sandwich stacked moist-electric array devices and their screen printing patterning manufacturing process are still challenging. Here, we developed a large-scale fine construction strategy for ion diode nano-channels compatible with screen printing process. A single moist-electric device can generate an open circuit voltage of 0.7 V and a short circuit current density of 56.69 μA/cm 2 . After large-area integrated manufacturing, the array can generate an open circuit voltage of 126 V and a short circuit current of 5.47 mA. In addition, compared with the spraying process, the performance deviation between different array units is greatly reduced using the screen printing process, which is the key to ensuring the application of moist-electric technology from a single prototype device to a functional integrated device.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 38
·19402-19409
·
IF 7.443
X. F. Chen,X. S. Wang,K. T. Liao,L. Z. Zeng,L. D. Xing,X. W. Zhou,X. W. Zheng,W. S. Li
In this study, polyvinyl alcohol (PVA) is proposed as a new binder to improve the power output of a microbial fuel cell. The physical and chemical properties of PVA are characterized with Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), contact angle testing, density functional theory calculations, and scanning electron microscopy (SEM). The electrochemical performance of an anode using carbon nanotubes as an electrocatalyst and PVA as a binder are evaluated in an Escherichia coli based fuel cell using chronoamperometry, electrochemical impedance spectroscopy (EIS), and polarization curve measurements, and a comparison is made with the conventional binder, polytetrafluoroethylene (PTFE). It is found that PVA is more hydrophilic and has stronger interactions with the bacterial membrane than PTFE. Accordingly, the anode with PVA as a binder facilitates the formation of biofilms and thus exhibits improved electron transfer kinetics between bacteria and the anode of the microbial fuel cell compared to the anode using PTFE. The MFC using PVA produces the largest maximum output power, 1.631 W m−2, which is 97.9% greater than the largest one produced by the MFC using PTFE (0.824 W m−2).
研究领域:
环境科学
·
电化学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 5
·A757
·
IF 3.662
Shijia Mu,Ding Zhu,Wei Liu,Shengrong Cai,Kaifang Zhang,Yungui Chen
Due to the sluggish oxygen reduction reaction (ORR) process of an O2 cathode, the power delivery of aprotic Li-O2 batteries (A-LOBs) is widely considered to be very poor. However, this work demonstrates the transient high-power output of A-LOBs based on the capacitive feature of the O2 cathode, including the intrinsic capacitance of cathode material and the ORR pseudocapacitance of the absorbed O2 on the cathode surface, by using graphene with high specific surface area. The O2 cathode delivers a high specific power of 12 026 W kggraphene−1 while also providing a large specific energy of 1216 Wh kggraphene−1. Pulse-discharge tests show that A-LOBs can achieve the transient high power output at high current via the "capacitor-type", while maintaining the high energy output at low current due to the "battery-type" (ORR). This work indicates that A-LOBs can deliver both high energy density and high transient power, which may be an appeal for the next-generation electric vehicles.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2020
·
IF 16.602
Meng Wang,Jialong Duan,Xiya Yang,Yudi Wang,Yanyan Duan,Qunwei Tang
Regulating the dynamic behavior of triboelectric charges between dielectric layer and metallic electrode is a promising solution to suppress charge screen effect and to improve the output performances of triboelectric nanogenerators (TENGs). Herein, the cutting-edge inorganic CsPbBr 3 perovskite is used as a dielectric material to tailor metal/perovskite Schottky junction for robust TENG applications. Arising from the induced electric field , the electron transfer from perovskite to metallic nanoparticle significantly promotes the charge accumulation at the bottom electrode, which in turn increases the overall power output of TENGs. After precisely regulating the barrier height of Schottky junction by means of optimizing noble metals (Ag, Au, and Pt) and fabricating the bulk Schottky junction, the electron drift-diffusion processes and the triboelectric charge storage behavior have been carefully optimized, achieving an enhanced power density of 3.31 W m −2 with an open-circuit voltage up to 240 V and a short-circuit current density of 4.13 μA cm −2 . This work may give new insights into the dynamic behavior of triboelectric charges for advanced TENG platforms.
研究领域:
材料科学
·
纳米技术
·
能源科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 19
·9402-9411
·
IF 8.867
Feilong Cai,Liyan Yang,Yu Yan,Jinghui Zhang,Fei Qin,Dan Liu,Yi-Bing Cheng,Yinhua Zhou,Tao Wang
Fabrication of efficient, hysteresis-free perovskite solar cells with stabilized power output in a planar heterojunction configuration via a low-temperature solution process remains a big challenge. Herein, we report an effective approach to prepare high performance n–i–p type planar heterojunction perovskite solar cells with eliminated hysteresis and stabilized power output over 20% via compositional and surface modifications to a low-temperature-processed TiO2 electron-transport layer (ETL). The fullerene derivative layer between the ETL and perovskite layers significantly improves electron extraction and suppresses charge recombination by reducing trap density at the ETL interface. This work manifests the presence of diffused TiO2/fullerene and fullerene/perovskite interfaces as an efficient interfacial engineering strategy to prepare high-performing perovskite solar cells.
研究领域:
材料科学
·
能源技术
·
化学工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Chaoliang Geng,Mingming Li,Xinchen Fang,Hongyang Su,Ziyun Zhang,Di Bao,Di Chen,Jigui Cheng
The influence of the heterogeneous interface is critical for the catalytic activity of the oxygen reduction reaction (ORR). This study demonstrates an enhancement of the electrocatalytic activity of the SrFe 0.9 Nb 0.1 O 3-δ (SFN113) electrode through the construction of a SrFe 0.9 Nb 0.1 O 3-δ -Sr 3 Fe 1.8 Nb 0.2 O 7-δ (SFN113-SFN327) heterogeneous interface. By coating varying amounts of Sr(NO 3 ) 2 (0.1 g, 0.2 g and 0.3 g) on SFN113 (1 g), SFN113/327 composite electrodes with different amounts of triple conducting oxide SFN327 are in-situ synthesized by high temperature calcination . Electrical Conductivity Relaxation (ECR) tests show that SFN327 has superior oxygen surface exchange performance compared to SFN113, especially at lower temperatures. At 550 °C, the oxygen surface exchange parameter of SFN327 is 4.23 times higher than that of SFN113. Symmetric cell tests with SFN113/327||BaCe 0.7 Zr 0.1 Y 0.1 Yb 0.1 O 3-δ (BCZYYb)||SFN113/327 configuration and single cell tests with Ni-BCZYYb||BCZYYb||SFN113/327 configuration indicate that the SFN113/327 composite electrode with a mass ratio of 1:0.2 displays the best electrocatalytic performance, achieving a power output of 502 mW cm −2 at 700 °C. The work not only in-situ synthesizes the SFN113/327 triple conducting composite electrode, but also introduces a novel method for developing proton conducting electrode materials .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2025
·
IF 4.9
Yuanhui Li,Xinyue Yang,Chongxiao Yuan,Xiao Li,Xiang Liu,Huiling Guo,Huajun Sun
While flexible self-powered electronic devices have shown promising prospects for development, substantial challenges remain in enhancing their power output and structural integrity. This study investigates the fabrication of organic piezoelectric nanofibers with a coaxial structure, achieved by electrospinning polyvinylidene fluoride (PVDF) and polyacrylonitrile (PAN), incorporating carbon nanotubes (CNTs). Due to the viscosity differences between PVDF and PAN, the electrospinning process results in a coaxial morphology. The interactions between the dipoles and hydrogen bonds of PAN and PVDF promote the formation of a piezoelectric active phase. The introduction of CNTs as nucleating agents enhances the β-phase content of PVDF and promotes the planar zigzag conformation of PAN. After hot pressing, the resulting terpolymer composite fiber films, are used to construct piezoelectric energy harvesting devices (PEHs). The P/P/C-0.2 PEH, containing 0.20 wt% CNT and 20 wt% PAN, achieves a high open-circuit voltage (V OC ) of approximately 13.7 V and a maximum power density of 0.75 μW/cm 2 in bend-release mode. This device exhibits a stable voltage output over 10,000 cycles, maintaining an output voltage of 7.5 V at 75 °C. Additionally, the PEH effectively captures mechanical energy from human movement. This research presents a promising approach to enhancing the piezoelectric output of flexible piezoelectric devices.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
IEEE-ASME TRANSACTIONS ON MECHATRONICS
·
2021
·Vol. 26
·期 6
·3151-3162
·
IF 5.303
Chongjing Cao,Lijin Chen,Wenke Duan,Thomas L. Hill,Bo Li,Guimin Chen,Hui Li,Yingtian Li,Lei Wang,Xing Gao
The emerging demand for bioinspired soft robotics requires novel soft actuators whose performance exceeds conventional rigid ones. Dielectric elastomer actuators (DEAs) are a promising soft actuation technology with large actuation strain and fast response. Cone DEAs are one of the most widely adopted DEA configurations for their compact structure and large force/stroke output with several configuration variations developed in recent years. By driving at a resonant frequency, the cone DEAs show a significant amplification in their power outputs, which demonstrates their suitability for highly dynamic robotic applications. However, it is still unclear how the payload conditions could affect the power outputs of cone DEAs and no work has compared the output performance of different variations of cone configurations. In this article, by considering conical configuration DEAs with generalized dissipative payloads, we conduct an extensive study on the effects of payload conditions on the power outputs of the cone DEA family. Additionally, we benchmark the performance of different cone DEA configurations and illustrate the fundamental principles behind these output patterns. The findings reported in this article establish guidelines for designing high-performance cone DEA actuators.
研究领域:
软体机器人
·
智能材料
·
致动器技术
·
机械工程
✓ 已验证
DOI
高影响因子
Nature Chemistry
·
2025
·
IF 20.2
Deng Xianming,Liu Li,Zhang Shuchao,Chen Qingxuan,Zhang Xinming,Wu Huimin,Chen Yongqi,Hou Tingzheng,Liu Ming,Zhou Dong,Peng Lele,Chen Zhen
While ultrafast charging and discharging is highly desired for energy storage, the densely packed crystalline inorganic electrodes suffer from sluggish ion transport that limits this capability. Here we report two-dimensional vertical ladder polymer cathode materials that feature layered nanosheets with rich intralayer pores and structural defects alongside weak interlayer interactions. This structural design allows lithium ions to migrate vertically across the intrinsic pores and/or defects accompanied by horizontal intercalation, thus establishing a cross-flow pathway for lithium storage. Such an effective ion-transport method enables flash charging of an ultrahigh-power polymer cathode to ~70% state-of-charge within 30 s at a high current density. Even operated at −50 °C, the polymer cathode achieves 3-min charging to ~55% state-of-charge. Furthermore, we propose an organic–inorganic hybrid strategy that overall improves the electrode-level specific energy at high rates for meeting practical metrics. This work demonstrates the potential of organic electrodes for high-power output under extreme operational conditions.
研究领域:
储能
·
材料科学
·
电化学
·
高分子科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2021
·
IF 17.881
Wei Xu,Jiayi Yang,Shuangshuang Liu,Yan Meng,Di Feng,Lingjie Jia,Sida Liu,Baolong Wang,Xiuhan Li
Liquid-solid triboelectric nanogenerator (LS-TENG) has emerged as a powerful tool in energy harvesting and motion detecting. There is a recognized need for improving the power output and signal-to-noise ratio of LS-TENG. The instantaneous discharging mechanism of LS-TENG is studied and experimentally realized by a controllable switch structure in this paper. The peak short circuit current and peak power output (at 1 MΩ) are increased by over 26 and 1700 times, respectively, with respect to the control LS-TENG working in the single electrode mode. This research provides a fresh insight in designing sensors with high signal-to-noise ratio and energy harvestors that have a superior performance in driving devices with low load resistance.
研究领域:
纳米技术
·
能源工程
·
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Sun Zhuangzhi,Han Chuanlong,Gao Shouwei,Li Zhaoxin,Jing Mingxing,Yu Haipeng,Wang Zuankai
Water evaporation is a natural phase change phenomenon occurring any time and everywhere. Enormous efforts have been made to harvest energy from this ubiquitous process by leveraging on the interaction between water and materials with tailored structural, chemical and thermal properties. Here, we develop a multi-layered interfacial evaporation-driven nanogenerator (IENG) that further amplifies the interaction by introducing additional bionic light-trapping structure for efficient light to heat and electric generation on the top and middle of the device. Notable, we also rationally design the bottom layer for sufficient water transport and storage. We demonstrate the IENG performs a spectacular continuous power output as high as 11.8 μW cm −2 under optimal conditions, more than 6.8 times higher than the currently reported average value. We hope this work can provide a new bionic strategy using multiple natural energy sources for effective power generation.
研究领域:
能量收集
·
材料科学
·
纳米技术
·
仿生学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Ziye Zhang,Deti Xie,Jiupai Ni,Chengsheng Ni
Ba 2 YCu 3 O 6+δ (BYC) is a prototypical superconducting oxide showing a superior mixed electronic and ionic conductivity at a temperature lower than 650 °C, but there is limited work on its possible application for low-temperature solid oxide fuel cells. Ba 2 MCu 3 O 6+δ (M = Y, Gd, Ho and Eu) oxides are studied as cathode materials for a proton-conducting solid oxide fuel cell (H–SOFC) and the polarization resistance ( R p ) reached around 0.29 Ω cm 2 at 650 °C in the ambient air, and the activation energy of R p was found to decrease with the electronegativity of the rare-earth element. Fe doping on Cu site of BYC has a negative effect on the electric conductivity of the oxide in the air but it enhances the electrochemical performance especially the power output of the full cell and structural stability under a slightly reducing atmosphere, e.g. pure Ar. The H–SOFC with BYC cathode showed a peak power of 175 mW cm −2 at 650 °C, which can be increased to 375 mW cm −2 by Fe doping on the Cu site as in Ba 2 YCu 2.6 Fe 0.4 O 6+δ .
研究领域:
材料科学
·
电化学
·
能源材料
·
固体化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）