CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ruiqi Liu,Hongming Chen,Busheng Zhang,Zhongzhu Liu,Yameng Fan,Li-Zhen Fan,Dan Zhou
Stretchable batteries suggest promising potential for the energy supply of wearable electronics. However, they always need to be replaced or wired for charging, interfering the continuous work of wearable electronics. Besides, deviation or delamination between the inner components under repeated deformations are also bottlenecks need to be addressed. Herein, a novel all-in-one thin-film sodium-ion battery (AFSIB) with stretchable and self-chargeable functions was designed by a simple electrospinning route. In the AFSIB, two stretchable symmetric electrode films are attached on each surface of a stretchable piezo-electrolyte film, and there is a strong interaction between the films via the close connection of fibers at the interface. When suffered from an external force, the stretchable piezo-electrolyte film can act as a nanogenerator and provide an internal potential to drive the migration of Na + ions for electrochemical reaction and energy storage, enabling the formation of self-charging capability of AFSIB. Besides, the strong interaction between the films enables the achievement of stable “All-in-One” structure of AFSIB, which can accommodate the damages comes from repeated deformations. This work paves a new approach for developing stretchable and self-chargeable energy devices for the continuous and stable energy supply of wearable electronics.
研究领域:
材料科学
·
能源技术
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 38
·2301913
·
IF 19
Meng Liu,Guocheng Lv,Hao Liu,Yuqing Fu,Jian Zhang,Libing Liao,De-en Jiang,Juchen Guo
Herein, a self-charging mechanism of rechargeable aluminum (Al) batteries with Chevrel phase molybdenum sulfide (Mo 6 S 8 ) cathode is reported. The results unambiguously reveal that the self-charging is a spontaneous disproportionation of Al intercalated Mo 6 S 8 originated from the dynamic shift of Al between occupied sites during Al intercalating and resting. The theoretical study indicates that the fully Al intercalated Mo 6 S 8 in the format of Al 4/3 Mo 6 S 8 is kinetically accessible driven by electrochemical overpotential but thermodynamically unstable due to the repulsion between Al 3+ cations. This mechanism is a true self-charging with no input of any form of energy, thus distinctly superior to the previously reported self-charging mechanisms. Based on this discovery, a semi-flow Al Mo 6 S 8 battery is designed and demonstrated with long-lasting discharge capability and high capacity.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Liuxue Sun,Jihuai Wu,Weichun Pan,Lina Tan,Xia Chen,Chunyan Deng,Qi Chen,Yu Lin,Miaoliang Huang,Zhang Lan
With the development of the Internet of Things and wearable devices, flexible photocapacitors capable of both energy harvesting and storage have attracted significant attention. However, issues such as low overall conversion efficiency, poor stability, and low energy density in flexible devices urgently need to be addressed. In this work, a self-charging photocapacitor is designed by integrating a flexible quasi-solid-state supercapacitor with two silicon solar cells connected in series, and the matching conditions between photovoltaic conversion unit and energy storage unit are optimized. The best-performing photocapacitor achieve a coupling efficiency of 95.84 %, a Joule efficiency of 76.90 %, and an overall conversion efficiency of 13.44 %, with a high specific capacitance (149.29 mF∙cm −2 ) and an excellent energy density (19.31 μWh∙cm −2 ), along with great stability in photo-charging/dark-discharge cycles. This study provides new insights for the current research on flexible self-powered systems.
研究领域:
能源材料
·
光电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Qianxi Zhang,Jianlong Wu,Jin Yan,Shishi Li,Chengpeng Li,Zehui Han,Denghui Li,Yaokang Zhang,Xin Wang,Qingqing Zhang,Peng Zhang
Efficient droplet manipulation is of great significance in both frontier sciences and industrial applications. Although electric-field-driven droplet control enables non-destructive fluid manipulation, greatly expanding the scope and control of microfluidics, droplets are typically electrically neutral, which leads to a great limitation on the direct response to electric fields. In this study, we proposed a novel strategy that integrates self-charged droplets and external electric fields, significantly reducing the driving voltage required for droplet manipulation. A novel separation strategy for the micro-droplets is introduced to enhance electro-driven applications, ensuring the stable and precise droplet motion under various electric fields. We demonstrated that electrospinning technology, when used to fabricate polytetrafluoroethylene (PTFE) films with nanofiber and agglomerate structures on the conductive glass substrates, realizes the flexible and stable droplet control. The particular film not only reduces the droplet’s viscosity but also efficiently charges droplets. As a consequence, the droplets with volumes ranging from 68.5 µL to 87.0 µL can be manipulated stably for effective locomotion of over 5 mm under the 60 V/mm electric field. Moreover, the motion range can be adjusted by external electric field. This integrated strategy provides a reliable and versatile solution for droplet manipulation, with promising applications in the controllable chemical reactions and liquid micro-reactors.
研究领域:
物理学
·
材料科学
·
微流体技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-10
·
IF 12.121
Zhang Yan,Wan Fang,Huang Shuo,Wang Shuai,Niu Zhiqiang,Chen Jun
Self-charging power systems integrating energy harvesting technologies and batteries are attracting extensive attention in energy technologies. However, the conventional integrated systems are highly dependent on the availability of the energy sources and generally possess complicated configuration. Herein, we develop chemically self-charging aqueous zinc-ion batteries with a simplified two-electrode configuration based on CaV 6 O 16 ·3H 2 O electrode. Such system possesses the capability of energy harvesting, conversion and storage simultaneously. It can be chemically self-recharged by the spontaneous redox reaction between the discharged cathode and oxygen from the ambient environment. Chemically self-recharged zinc-ion batteries display an initial open-circuit voltage of about 1.05 V and a considerable discharge capacity of about 239 mAh g −1 , indicating the excellent self-rechargeability. Impressively, such chemically self-charging zinc-ion batteries can also work well at chemical or/and galvanostatic charging hybrid modes. This work not only provides a route to design chemically self-charging energy storage, but also broadens the horizons of aqueous zinc-ion batteries.
研究领域:
能源存储
·
电池技术
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yixin Hou,Pengfei Ma,Fei Long,Mingyang Liu,Yifan Zheng,Li Sun,Junjie Shi,Ke Niu,Jun Su,Yanan Ma,Yihua Gao
Air-rechargeable batteries integrating energy harvesting, conversion, and storage provide the most portable and popular approach to self-charging power systems. However, air-rechargeable batteries are currently mostly aqueous Zn-based battery systems in which it has remained a significant challenge to solve the low discharge capacities and poor cycling stability of chemical self-charging due to continuous insertion/extraction of large-size hydrated Zn2+. Herein, efficient Bi2Te3@C cathodes with an active carbon paper substrate are developed. Further ex situ characterization analysis confirms the energy storage mechanism regarding the coexistence of H+/Zn2+ coinsertion and conversion reaction in the aqueous Zn||Bi2Te3@C battery. Benefiting from the fast dynamics process attributed to the unique mechanism, a reliable energy supply is provided even in an extended temperature range from −10 to 45 °C. More importantly, Bi2Te3@C cathodes boost the superior and repeatable air-rechargeability. A discharge capacity of up to 264.20 mA h g–1 at 0.30 A g–1 is manifested after self-charging for 11.00 h. In addition, two quasi-solid-state battery devices are connected in series to continuously power a timer. After the device is discharged and then air self-charged for just a few seconds, an LED is lit.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Qiu-Hong Zhu,Guo-Hao Zhang,Lei Zhang,Jie Fu,Yue-Ru Zhou,Yu-Qin Xiang,Lijian Ma,Guo-Hong Tao,Ling He
Charge dissipation of filter adsorption layer can seriously affect the electrostatic filtration efficiency to cause infection. Here, a self-charge-carrying filter with particulate matters (PMs) removal efficiency retention performance was fabricated by in situ polymerization. The filter consists of a polymerized ionic coating, that is the in situ growth of bio-curcumin ionic liquid (CIL), covered the surface of sponge network forming PCILG@MF composite. Benefiting from inherent ionic transport properties of CIL, the filter allows for a continuous electric field to attract particles, avoiding the charge loss of adsorption materials during long-term using. The filter remained a high efficiency of over 97% after 30 h, even for nano-sized influenza viruses. Interestingly, the PCILG@MF also provides a chelating effect to capture PMs containing various heavy metals. In comparison with commercial mask, the filter exhibits significantly less powder shedding to reduce potential human inhalation toxicity. The present work highlights the potential of self-charge-carrying CIL-based filter for air pollution.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Gang Xiao,Jun Ju,Min Li,Huajun Wu,Yihao Jian,Wei Sun,Wei Wang,Chang Ming Li,Yan Qiao,Zhisong Lu
The yarn-based sweat-activated battery (SAB) is a promising energy source for textile electronics due to its excellent skin compatibility, great weavability, and stable electric output. However, its power density is too low to support real-time monitoring and wireless data transmission. Here, we developed a scalable, high-performance sweat-based yarn biosupercapacitor (SYBSC) with two symmetrically aligned electrodes made by wrapping hydrophilic cotton fibers on polypyrrole/poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate)-modified stainless steel yarns. Once activated with artificial sweat, the SYBSC could offer a high areal capacitance of 343.1 mF cm −2 at 0.5 mA cm −2 . After 10,000 times of bending under continuous charge-discharge cycles and 25 cycles of machine washing , the device could retain the capacitance at rates of 68% and 73%, respectively. The SYBSCs were integrated with yarn-shaped SABs to produce hybrid self-charging power units. The hybrid units, pH sensing fibers, and a mini-analyzer were woven into a sweat-activated all-in-one sensing textile, in which the hybrid, self-charging units could power the analyzer for real-time data collection and wireless transmission. The all-in-one electronic textile could be successfully employed to real-time monitor the pH values of the volunteers’ sweat during exercise. This work can promote the development of self-charging electronic textiles for monitoring human healthcare and exercise intensity.
研究领域:
材料科学
·
电子纺织品
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 13
·2007942
·
IF 18.808
Xiuli Xie,Zhengsong Fang,Meijia Yang,Fangming Zhu,Dingshan Yu
Aqueous rechargeable Zinc (Zn)–polymer batteries are promising alternatives to prevalent Li-ion cells in terms of cost, safety, and rate capability but they suffer from limited specific capacity in addition to poor environmental adaptability. Herein, air and light are successfully utilized from external environments in single near-neutral two-electrode Zn batteries to enable remarkably improved electrochemical performance, fast self-charging, and switchable multimode-operation from Zn–polymer to Zn–air cells. This system is enabled by a well-designed polyaniline-nanorod-array based “all-in-one” cathode combining reversible redox capability, oxygen reduction activity, and photothermal-responsiveness. The initiative design allows perfect integration of multiple energy harvesting from ambient “air” and light, energy conversion, and storage in one single cathode. Thus, it can act as an efficient light-assisted electrically-rechargeable Zn–polymer cell featuring the highest specific capacity of 430.0 mAh g −1 among all existing polymer cathodes. Without external power sources, it can be self-charged to deliver a high discharging capacity of 363.1 mAh g −1 by concurrently harvesting chemical energy from air and light energy for only 20 min. It can also switch to a light-responsive Zn–air battery mode to surmount the output capacity limit of Zn–polymer battery mode for continued electricity supply.
研究领域:
电化学
·
能源材料
·
功能高分子
·
储能技术
·
环境适应性电池
✓ 已验证
DOI
高影响因子
Nano Energy
·
2024
·
IF 16.8
Yong Ma,Qing Yang,Siling Liu,Shilin Lei,Shuai Tan,Caihong Wang,Yong Wu
An isotropic gel piezo-electrolyte generates piezoelectric potential when subjected to a compressive force but exhibits a relatively constant ionic conductivity under different pressures. Here, we present a pressure-alignable liquid crystalline gel (LCG) piezo-electrolyte to simultaneously enhance ionic conductivity along with piezoelectric generation for an efficient piezo-supercapacitor. The LCG piezo-electrolyte is obtained via converting 4-(1-ethyldecyl) benzenesulfonic acid (EDBSA) lyotropic liquid crystal filled with piezoelectric barium titanate particles into polyacrylamide hydrogel. An external pressure induces macroscopic alignment of lamellar EDBSA self-assembly and results in an increase in the ionic conductivity, from 48.5 mS cm −1 to 58.5 mS cm −1 . By virtue of the simultaneous conductivity promotion and piezoelectric generation, the piezo-supercapacitor constructed from the LCG piezo-electrolyte and carbon cloth-based polyaniline electrodes can be rapidly self-charged to 1220 mV by a compressive force of 20 N. Meanwhile, the piezo-supercapacitor delivers a specific capacitance of 2407 mF cm −2 with a 101.2 % retention after 10,000 charge-discharge cycles. The piezo-supercapacitor harvests mechanical energy and outputs electrical energy with a total energy conversion efficiency of 44.72 %. The work provides an effective strategy to construct synchronously external field-responsive films with multifunctionalities for enhanced energy conversion in integrated power cells.
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
Nano Energy
·
2023
·
IF 17.6
Chao Zhao,Jinyun Xu,Junzhu Tao,Changfa Xiao,Xin Jin,Wenyu Wang,Xing Liu,Jie Chen,Zhengtao Zhu
Self-charging supercapacitor (SCSPC) is an integrated device that can convert mechanical energy into electrical energy and store it to power microelectronics without need a rectifier for DC conversion. Here, we report a multi-alignment design idea for polyacrylonitrile (PAN) piezoelectric nanofiber instead of traditional polyvinylidene fluoride (PVDF) as a separator in SCSPCs, which greatly improves device self-charging performance and index. The combination of synergistic effect of polarization and the stretching process in electrospinning technology can achieve PAN nanofibers orderly arrangement at macroscopic level and alignment of conformation and cyano groups at microstructural level, resulting in excellent hydrophilicity (contact angle 0 °), high piezoelectric property (3.80 μW at a load resistance of 1 MΩ), high mechanical property (7.77 MPa), and outstanding cycling stability (unchanged after 22,000 cycles). As a result, the SCSPCs based on PAN piezoelectric separator has a high conversion efficiency of 12.53%, an energy density of 37.60 mJ cm −2 at power density of 1.01 mW cm −2 , and a capacitance retention 91.7% after 5000 compressive cycles. The SCSPC@PAN with working area of 4 × 4 cm 2 was attached on elbow, shoes, and bicycle tire to collect biomechanical energy and covert mechanical energy into electrical energy and store. Two SCSPC@PAN in series attached on one shoe can light 3.0 V LEDs after working for 40 min. This multi-scale alignment design idea and understanding the relationship between structure of PAN piezoelectric membrane and properties of SCSPC@PAN would provide important basis for design advanced piezoelectric separator for SCSPCs.
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
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Di Wu,Sairao Zhao,Tao Huang,Wenbin He,Xin Zhou,Guanzhong Wang,Mengdi Guo,Xiao Luo,Minglei Cao,Yang Yue,Wei Lai,Chuankun Zhang,Yanan Ma
The flexible self-charging zinc ion micro-supercapacitors (ZIMSC) that can be effectively charged by harvesting ubiquitous energy from the air, not only achieve power supply anytime and anywhere but also improve the integrated degree without external charging plug or cable, enabling it a promising candidate for the wearable electronic device in various environmental scenarios. Herein, we reported a chemically self-charging ZIMSC based on a free-standing V 2 CT x /CNT electrode. Introducing 1D CNT into 2D V 2 CT x fundamentally overcomes the self-stacking problem of the nanosheets while providing additional ion transport paths and improving the conductivity of active electrodes. The area-specific capacity of V 2 CT x /CNT-based ZIMSC achieves 117.2 mF cm −2 after 8.0 h self-charging. The excellent self-charging performance is attributed to the oxidation of vanadium in the V 2 CT x -based cathode stimulated by ambient oxygen, accompanied by the Zn 2+ deintercalation process. The flexible ZIMSC exhibited an optimal area capacitance of 246.88 mF cm −2 at a current density of 0.5 mA cm −2 . Additionally, the self-charging ZIMSC is integrated with the V 2 CT x -based pressure sensors for a self-powering wearable system that exhibits excellent stability over 50,000 loading/unloading cycles. This work provides a rational design for constructing highly efficient self-charging energy storage devices and broadens the horizons of flexible wearable devices.
研究领域:
材料科学
·
能源存储
·
柔性电子
·
纳米技术
✓ 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）