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
·
材料科学
·
能源技术
✓ 已验证
产品关联
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
·
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
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2022
·Vol. 46
·期 11
·16075-16081
·
IF 4.672
Yang Yang,Haoran Zhang,Xun Zhu,Dingding Ye,Rong Chen,Qiang Liao
Summary Tremendous research has focused on the wearable electronic device, leading to the basic requirement of suitable power sources. Herein, we report one bendable paper-based zinc-air battery with a novel hollow channel structure. It achieves a maximum power density of 138 mW/cm 2 , outperforming the state-of-art paper-based batteries reported previously. The boosted performance is assigned to the low charge transfer resistance and facilitated mass transfer from the hollow structure. It demonstrates the positive design of microchannel structure is profitable for the power-generation enhancement, and offers a possible route to commercialize the paper-based power generators.
研究领域:
电化学能源
·
柔性电子学
·
材料科学
·
纳米能源
·
生物医学工程
✓ 已验证
DOI
高影响因子
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
·
生物医学工程
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
·
2024
·
IF 3.2
Chengcheng Li,Hao Zheng,Xingguo Zhang,Zhihua Pu,Dachao Li
This paper reports an adaptive degradable flexible power supply. The power supply is produced using a batch-printed, easy-to-operate screen-printing technique that converts the chemical energy of glucose and oxygen into electricity. The power supply has stable current and voltage outputs in vitro, delivering a consistent open circuit potential of 0.2 V in vitro. Due to the flexibility and degradability of the power supply, the power supply can be implanted anywhere in the tissue. This breaks through the limitation of location, for example, mechanical energy harvesters can only be implanted in places with frequent movements. And due to the degradable nature of the power supply, surgical resection is avoided. Glucose and oxygen are ubiquitous and abundant in interstitial fluid. The in vivo experimental results prove that the power supply can power the light-emitting diode and have a stable current output. Therefore, the power supply is expected to provide internal power for implantable devices, avoiding transmission from external sources such as radio frequency.
研究领域:
生物医学工程
·
材料科学
·
能源技术
·
生物传感器
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2019
·Vol. 37
·期 8
·737-743
·
IF 2.804
Hong Yang,Cheng Xun-Liang,Liu Ge-Jun,Hong Dong-Sheng,He Si-Si,Wang Bin-Jie,Sun Xue-Mei,Peng Hui-Sheng
Given that conventional bulky electrochemical energy storage devices are too rigid and heavy to be considered wearable, developing fully integrated power systems is expected to accelerate the successful commercialization of smart electronic textiles. Although great achievements have been made for fiber-shaped energy storage devices, there remain key challenges pertaining to their fabrication efficiency, scalability, and stability. Herein, a general and highly efficient method is developed to continuously fabricate supercapacitor fibers with lengths of kilometers at high production rate up to 118 m/h through a simple one-step wet spinning method. Beneficial from the designed unique two-circle-in-one-circle architecture, the resulting supercapacitor fibers demonstrated high electrochemical stability even after being bended for 1 × 10 5 cycles. As a demonstration, these continuous supercapacitor fibers were further woven into a flexible power scarf for large-scale applications in wearable electronics. This simple and scalable fabrication process combined with the unique structure provides a general and effective paradigm to design other fiber-shaped devices like sensors, batteries, and solar cells.
研究领域:
材料科学
·
能源技术
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·
IF 15.7
Wang Haiyan,Dang Jie,Wang Ying,Liu Feng,Lin Jinguo,He Tiancheng,Liao Qihua,Zhang Qi,Cheng Huhu,Qu Liangti
Iontronic power source harnesses ion-electron coupling effect for energy conversion, offering great potential in wearable electronics and bioelectronics. However, its limited power density and insufficient current hinder the progress toward commercialization. Here we report an iontronic electricity generator based on intrinsic asymmetric interfaces and controllable energy-release, which reaches a maximum volumetric power density of up to 3680 W m -3 , area power density of 18.4 W m -2 , and peak current of more than 5 A. Cycling power generation is ascribed to reversible electron-coupled ion-oscillation at interface. Synergistically, the intrinsic asymmetric interfaces facilitate ion-electron coupling interaction, and the energy-release gate optimizes the energy conversion pathway, thus ensuring giant power output. The developed generator shows large-scale manufacturability and good flexibility. These exceptional performances in iontronic power source not only offer useful paradigms for wearable electronics, but also indicate a strategy and direction into high-power energy conversion from low-grade environmental source.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）