Interface engineering of calligraphic ink mediated conformal polymer fibers for advanced flexible supercapacitors

Wang, Pengzhen; Li, Kai; Wang, Xiaoxiao; Meng, Zhaoting; Xin, Zhefeng; Cui, Chaochao; Quan, Fengyu; Zhang, Kewei; Xia, Yanzhi

doi:10.1039/d2ta03467k

Cited by 20 publications

(5 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hybrid crosslinking network generated the porous structure of fiber electrodes during evaporation. As shown in Figure 4E , the crosslinking network of SA with electrostatic interaction shrinks during the desolvation process, resulting in a density structure, [ 40 ] while the PEGDA networks with covalent networks would keep the porous structure. This phenomenon highlighted the significant role of PEGDA crosslinking networks in porous structures and was confirmed by the cross‐section microscopic images of pure SA and PEGDA fibers.…”

Section: Resultsmentioning

confidence: 99%

Polymer Engineering Enables High Linear Capacity Fiber Electrodes by Microenvironment Regulation

Li,

Wang,

Liu

et al. 2024

Advanced Science

View full text Add to dashboard Cite

Unlike bulky and rigid traditional power systems, 1D fiber batteries possess appealing features such as flexibility and adaptability, which are promising for use in wearable electronic devices. However, the performance and energy density fiber batteries are limited by the contradiction between ionic transfer and robust structure of fiber electrodes. Herein, these problems are addressed via polymer engineering to regulate the microenvironment in electrodes, realizing high‐linear‐capacity thick fiber electrodes with excellent cycling performance. The porosity of the electrodes is regulated using polymer crosslink networks designed with various components, and lithium‐ion transfer is optimized through ether‐abundant polymer chains. Furthermore, reinforced covalent bonding with carbon nanotube networks is established based on the modified functional groups of polymer networks. The multiscale optimizations of the porous structure, ionic transportation, and covalent bonding network enhance the lithium‐ion dynamics property and structural stability. Therefore, ultrahigh linear‐capacity fiber electrodes (17.8 mAh m−1) can be fabricated on a large scale and exhibit excellent stability (92.8% after 800 cycles), demonstrating obvious superiority among the reported fiber electrodes. Moreover, this study highlights the high effectiveness of polymer regulation in fiber electrodes and offers new avenues for designing next‐generation wearable energy‐storage systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Polymer Engineering Enables High Linear Capacity Fiber Electrodes by Microenvironment Regulation

Li,

Wang,

Liu

et al. 2024

Advanced Science

View full text Add to dashboard Cite

show abstract

“…In the formulas, k 1 and k 2 are constants at a given potential, ν (V s –1 ) is scan rate, and i (A) is the current. ,,, Figure d shows the capacitance contribution ratios of PEDOT/EVMT-180 at different scan rates. It can be seen that the capacitance contribution rates gradually increase with the increment of scan rates, from 44.5% at 2 mV s –1 to 61.9% at 8 mV s –1 , demonstrating that the scan rate has a significant effect on the capacitance behavior and plays a major part in the total storage capacity, especially at high scan rate. ,− The excellent capacitive performance of PEDOT/EVMT-180 can be attributed to the mechanism illustrated in Figure e, with the microstructure of vermiculite depicted on the left.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Figure a,b illustrates the CV curves and GCD curves of different samples, revealing that PEDOT/EVMT-180 has better electrochemical performance than other samples. The CV curves of PEDOT/EVMT- x ( x = 160, 180, 190) at the potential range of 0–1 V show that PEDOT/EVMT-180 has the largest integral area and current value, demonstrating optimal electrochemical behaviors. , Meanwhile, the GCD curve of PEDOT/EVMT-180 displays the longest discharge times and approximately equal charge and discharge times, exhibiting the highest reversibility, the fastest ion transport, and the most numerous routes (Figure b). Figure c shows the specific capacitance of diverse contrast samples at different current densities, and it can be seen more directly that PEDOT/EVMT-180 has the best capacitance performance.…”

Section: Results and Discussionmentioning

confidence: 99%

Smart Energy Clays: Chemical Vapor Deposition of PEDOT in Expanded Vermiculite Blocks for Electrochemical Energy Storage

Wang,

Tian

et al. 2023

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

“…With the application of energy storage devices becoming increasingly extensive [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ], research on their related electrode materials [ 8 , 9 , 10 ] and electrolytes has become more widespread [ 11 ] and in-depth [ 12 , 13 , 14 , 15 ]. Electric double-layer (EDL) capacitors (EDLCs) are capable of quick charge/discharge rates and large charge storage densities; their process of charge/discharge has gained attention in the electrochemical research field.…”

Section: Introductionmentioning

confidence: 99%

From Molecular Simulations to Experiments: The Recent Development of Room Temperature Ionic Liquid-Based Electrolytes in Electric Double-Layer Capacitors

Zhang,

Wei,

Zheng

et al. 2024

Molecules

View full text Add to dashboard Cite

Due to the unique properties of room temperature ionic liquids (RTILs), most researchers’ interest in RTIL-based electrolytes in electric double-layer capacitors (EDLCs) stems from molecular simulations, which are different from experimental scientific research fields. The knowledge of RTIL-based electrolytes in EDLCs began with a supposition obtained from the results of molecular simulations of molten salts. Furthermore, experiments and simulations were promoted and developed rapidly on this topic. In some instances, the achievements of molecular simulations are ahead of even those obtained from experiments in quantity and quality. Molecular simulations offer more information on the impacts of overscreening, quasicrowding, crowding, and underscreening for RTIL-based electrolytes than experimental studies, which can be helpful in understanding the mechanisms of EDLCs. With the advancement of experimental technology, these effects have been verified by experiments. The simulation prediction of the capacitance curve was in good agreement with the experiment for pure RTILs. For complex systems, such as RTIL–solvent mixtures and RTIL mixture systems, both molecular simulations and experiments have reported that the change in capacitance curves is not monotonous with RTIL concentrations. In addition, there are some phenomena that are difficult to explain in experiments and can be well explained through molecular simulations. Finally, experiments and molecular simulations have maintained synchronous developments in recent years, and this paper discusses their relationship and reflects on their application.

show abstract

Interface engineering of calligraphic ink mediated conformal polymer fibers for advanced flexible supercapacitors

Abstract: Bio-based fibers with excellent mechanical and electrochemical properties are crucial to construct high-performance fiber-shaped electrochemical supercapacitors (FESCs) for wearable applications. However, the available biofiber electrodes are suffering greatly from drawback...

Cited by 20 publications

References 58 publications

Polymer Engineering Enables High Linear Capacity Fiber Electrodes by Microenvironment Regulation

Polymer Engineering Enables High Linear Capacity Fiber Electrodes by Microenvironment Regulation

Smart Energy Clays: Chemical Vapor Deposition of PEDOT in Expanded Vermiculite Blocks for Electrochemical Energy Storage

From Molecular Simulations to Experiments: The Recent Development of Room Temperature Ionic Liquid-Based Electrolytes in Electric Double-Layer Capacitors

Contact Info

Product

Resources

About