A solid state energy storage device with supercapacitor–battery hybrid design

Dai, Jiaqi; Fu, Kun; Palanisamy, R.; Gong, Amy; Pastel, Glenn; Kornfeld, Robert; Zhu, Hongli; Sanghadasa, Mohan; Bekyarova, Elena; Hu, Liangbing

doi:10.1039/c7ta02638b

Cited by 36 publications

(5 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Advanced flexible energy storage devices, including batteries, 2,3 supercapacitors, 4,5 solar cells, 6,7 and fuel cells, 8 have been prevalent due to the demand for substitutional energy resources in response to climate change. Supercapacitors are one alternative or complementary technology to batteries as significant energy supply in hybrid capacitor‐battery devices due to their fast charging‐discharging, high safety, and high power density 9,10 . However, traditional supercapacitors have several issues, including environmental pollution by the leakage of liquid electrolytes, self‐discharging over time, and low energy density.…”

Section: Introductionmentioning

confidence: 99%

“…Supercapacitors are one alternative or complementary technology to batteries as significant energy supply in hybrid capacitor-battery devices due to their fast charging-discharging, high safety, and high power density. 9,10 However, traditional supercapacitors have several issues, including environmental pollution by the leakage of liquid electrolytes, self-discharging over time, and low energy density. Gel polymer electrolytes (GPE) provide an opportunity to address some of these challenges for realizing flexible supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D printing flexible supercapacitors based on crosslinked poly (acrylic acid‐co‐vinylimidazole)

Wang

Auad

Beckingham

2023

Engineering Reports

View full text Add to dashboard Cite

Supercapacitors are an attractive technology for energy storage applications as they allow for fast charging of devices. The fabrication of flexible supercapacitors by additive manufacturing is a promising approach to produce energy storage components for applications where material flexibility and complex geometries are desirable. In this work, digital light projection (DLP) additive manufacturing is used to fabricate polymer electrolytes for flexible supercapacitors based on crosslinked poly(acrylic acid‐co‐vinylimidazole) (PAAVim). Ion gels are prepared through equilibration with 4M lithium chloride (LiCl) in ethylene glycol, deionized (DI) water and ethylene glycol/DI water mixtures. Flexibility and stretchability varied depending on the equilibration solvent with prepared PAAVim/LiCl polymer electrolytes exhibiting up to ˜700% elongation at break. Subsequent flexible supercapacitors fabricated by sandwiching the ion gel between carbon cloth electrodes delivered 60 F/g specific capacitance at the scan rate of 0.2 A/g with an energy density of 8.3 Wh/kg and a power density of 99.8 W/kg. Overall, this work demonstrates the fabrication of flexible capacitors through DLP additive manufacturing, where the resulting material physical and electrochemical properties can be varied through control over the resin chemistry.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

3D printing flexible supercapacitors based on crosslinked poly (acrylic acid‐co‐vinylimidazole)

Wang

Auad

Beckingham

2023

Engineering Reports

View full text Add to dashboard Cite

show abstract

“…9−11 Currently, textile-based SCs have been required to have multiple functions such as enhancing resistant properties when exposed to complex systems and extreme conditions and adapting practical smart textile applications. 12,13 More specifically, enhancing the resistant properties when exposed to complex systems and long-term working durability, which is determined by the electrolyte system, have been vital roles for smart textile applications. 14,15 Presently, most of the reported fabric-based SCs have been based on poly(vinyl alcohol) (PVA) gel electrolyte, which has been proved to be a promising candidate to fabricate high-performance flexible energy storage devices.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, textile-based SCs have been required to have multiple functions such as enhancing resistant properties when exposed to complex systems and extreme conditions and adapting practical smart textile applications. , More specifically, enhancing the resistant properties when exposed to complex systems and long-term working durability, which is determined by the electrolyte system, have been vital roles for smart textile applications. , Presently, most of the reported fabric-based SCs have been based on poly(vinyl alcohol) (PVA) gel electrolyte, which has been proved to be a promising candidate to fabricate high-performance flexible energy storage devices. ,− However, the rapid evaporation effect of water moisture even at room temperature has become a huge challenge for SCs based on aqueous gel electrolytes. ,− A sequential decrease in water moisture would result in dehydration of the gel electrolyte and further deprive the ion diffusion path between SC electrodes and reduce or even destroy the ion migration ability of aqueous gel electrolytes, degrading the durability of the entire SC device. In severe cases, with water moisture decreasing excessively, the pressure inside SC devices would significantly increase and might be a risk of explosion. , Thereby, it is urgent to improve the water retention ability to ensure long-term durability.…”

Section: Introductionmentioning

confidence: 99%

Smart-Fabric-Based Supercapacitor with Long-Term Durability and Waterproof Properties toward Wearable Applications

Fan

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The rapid development of wearable electronics and smart textiles has dramatically motivated the generation of flexible textile-based supercapacitors (SCs). However, the rapid evaporation of water moisture in gel electrolyte substantially limits the working durability and performance enhancements of the flexible devices. Therefore, a high-performance multifunctional textilebased SC with long-term durability is highly desired. Herein, a poly(vinyl alcohol) (PVA)/polyacrylamide (PAM) composite gel electrolyte was developed to fabricate multifunctional device with water-retaining and water-proofing properties based on multidimensional hierarchical fabric. And the assembled SC based on composite gel exhibited a superior water-retaining property and long-term working durability (93.29% retention rate after operation for 15 days), whereas the performance of SC based on pure PVA gel declined sharply and only 43.2% capacitance remained. In addition, the assembled SC exhibited enhanced specific capacitance of 707.9 mF/cm 2 and high energy density of 62.92 μWh/cm 2 and maintained a good stability of 80.8% even after 10 000 cyclic tests. After water repellency treatment, the integrated device immersed in water could still work normally. What's more, the assembled devices could be charged by a portable hand generator, which could be potentially applied for field rescue and military applications. We foresee that this strategy would be a potential route to prepare high-performance multifunctional textile-based SCs for wearable electronic systems and smart textile applications.

show abstract

“…This paper analyzes the deficiencies of the topology and control strategies of traditional HESSs, improves the previous topology, and proposes an optimized power allocation strategy based on the current control of EVs, thereby accurately predicting future power requirements. In addition, on the basis of current control, we herein add the SOC control of SCs based on the driving speed of EVs, thereby reducing the overcharge and overdischarge of the battery, improving the climbing performance of the EV, improving the energy utilization rate and reducing the battery aging effect [31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

An Improved SOC Control Strategy for Electric Vehicle Hybrid Energy Storage Systems

Wang

et al. 2020

Energies

View full text Add to dashboard Cite

In this paper, we propose an optimized power distribution method for hybrid electric energy storage systems for electric vehicles (EVs). The hybrid energy storage system (HESS) uses two isolated soft-switching symmetrical half-bridge bidirectional converters connected to the battery and supercapacitor (SC) as a composite structure of the protection structure. The bidirectional converter can precisely control the charge and discharge of the SC and battery. Spiral wound SCs with mesoporous carbon electrodes are used as the energy storage units of EVs. Under the 1050 operating conditions of the EV driving cycle, the SC acts as a “peak load transfer” with a charge and discharge current of 2isc~3ibat. An improved energy allocation strategy under state of charge (SOC) control is proposed, that enables SC to charge and discharge with a peak current of approximately 4ibat. Compared with the pure battery mode, the acceleration performance of the EV is improved by approximately 50%, and the energy loss is reduced by approximately 69%. This strategy accommodates different types of load curves, and helps improve the energy utilization rate and reduce the battery aging effect.

show abstract

A solid state energy storage device with supercapacitor–battery hybrid design

Abstract: High power and high energy density are important requirements for advanced energy storage systems in mobile electronic devices, electric vehicles, and military-grade high-rate energy storage systems.

Cited by 36 publications

References 46 publications

3D printing flexible supercapacitors based on crosslinked poly (acrylic acid‐co‐vinylimidazole)

3D printing flexible supercapacitors based on crosslinked poly (acrylic acid‐co‐vinylimidazole)

Smart-Fabric-Based Supercapacitor with Long-Term Durability and Waterproof Properties toward Wearable Applications

An Improved SOC Control Strategy for Electric Vehicle Hybrid Energy Storage Systems

Contact Info

Product

Resources

About