An ionic liquid incorporated in a quasi-solid-state electrolyte for high-temperature supercapacitor applications

Lee, Jeong Han; Chae, Ji Su; Jeong, Jun Hui; Ahn, Hyo‐Jun; Roh, Kwang Chul

doi:10.1039/c9cc07784g

Cited by 44 publications

(22 citation statements)

References 31 publications

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“…The above results show that PPTA/Ag/PCNTs-based supercapacitors have excellent heat resistance, while other water-based electrolyte supercapacitors cannot be placed in the higher-temperature environment for a long time because the electrolyte may dry out and affect the operation of the supercapacitor. − …”

Section: Results and Discussionmentioning

confidence: 90%

Heat-Resistant and High-Performance Solid-State Supercapacitors Based on Poly(para-phenylene terephthalamide) Fibers via Polymer-Assisted Metal Deposition

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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Heat-resistant supercapacitors with excellent mechanical strength are highly required for flexible and wearable electronics in our daily life. Here, high-performance and heat-resistant solid-state supercapacitors based on poly(para-phenylene terephthalamide) fibers/Ag/poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT:PSS)&carbon nanotubes (PPTA/Ag/PCNTs) have been fabricated for the first time. Due to the toughness of the PPTA fibers and the excellent electroconductivity of the composite fiber, the PPTA/Ag/PCNTs-based supercapacitor exhibits good electrochemical performance together with brilliant mechanical strength and bending durability. Moreover, the heat resistance of tough PPTA/Ag/PCNTs fiber and ionic liquid gel electrolyte endow the supercapacitor with stability at temperatures as high as 80 °C and the capacitance can return to more than 80% after the heat treatment. The power density or energy density of the supercapacitor assembled on PPTA/Ag/PCNTs fiber electrodes is higher than that of any other polymer fiber-related supercapacitor. This work adds to the study of high-performance supercapacitors based on polymer fibers and provides the possibility to apply PPTA fiber for energy storage devices with flexibility and heat resistance.

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Section: Results and Discussionmentioning

confidence: 90%

Heat-Resistant and High-Performance Solid-State Supercapacitors Based on Poly(para-phenylene terephthalamide) Fibers via Polymer-Assisted Metal Deposition

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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“…6f). The maximal energy density of the quasi-solid-state Zn//APZC ZHSC outperforms that of previously reported devices, such as flexible solid-state ZHS (59.7 W h kg −1 at 447.8 W kg −1 ), 15 quasi-solid-state WC–6ZnN–12U@CC//Zn@CC ZHS (27.7 W h kg −1 at 35.7 W kg −1 ), 58 MoO 2 @NC//PVA//CuCo 2 S 4 quasi-solid-state ASC (65.1 W h kg −1 at 800 W kg −1 ), 59 AC//ILQSE//AC SC (41.9 W h kg −1 at 270.6 W kg −1 ), 60 quasi-solid-state ZnHS (35.9 W h kg −1 at 149.6 W kg −1 ), 61 MXene–rGO2//ZnSO 4 //Zn ZHSC (34.9 W h kg −1 at 279.9 W kg −1 ), 62 and AMX–ZIS (60.2 W h kg −1 at 175 W kg −1 ). 63 In addition, the quasi-solid-state ZHSC shows a small capacity change (66.1, 60.6, 59.1, and 56.3 mA h g −1 ) under varied bending deformations (0°, 45°, 90°, and 135°).…”

Section: Resultsmentioning

confidence: 99%

Nitrogen-doped hollow carbon nanoboxes in zwitterionic polymer hydrogel electrolyte for superior quasi-solid-state zinc-ion hybrid supercapacitors

Zhu

Guo

et al. 2022

J. Mater. Chem. A

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“…[57,61] However, the inferior ionic conductivity and intrinsic viscosity of PVDF-HFP limit its the power and temperature range in real applications. [62] To the best of our knowledge, plastic crystalline succinonitrile (SN) can be used as a solid solvent to increase the ion mobility of the gel polymer electrolyte. [63] Hence, SN as a nonionic additive was added to the PVDF-HFP and IL gel matrix (inset of Figure 5a) to form the PVDF-HFP/EMIM•BF 4 /SN gel electrolyte.…”

Section: Resultsmentioning

confidence: 99%

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

Liang

Shi

et al. 2021

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communication stations of switching 5G signal are inevitable. In that case, supercapacitors that can work at high temperatures must be explored to expand the application range and improve equipment security. However, studies on the development of high-temperature supercapacitors are few because of several challenges, such as: poor cycling stability of the electrode material at high temperature and low boiling point of the electrolyte. [11][12][13] Therefore, supercapacitors operating at high temperatures impose strict requirements on materials and electrolytes.Carbon-based supercapacitors have elicited extensive attention because of their rapid charge/discharge rate, high electrical conductivity, and good thermostability. [14][15][16][17][18][19][20] Extensive effort has been exerted to obtain high-temperature, carbon-based supercapacitors with improved the performance. For example, Yury et al. reported on wide range of temperature supercapacitors based on active carbon (AC). By adjusting the size and shape of AC, the double-layer capacitors could be operated in a wide range of temperature from −100 to 60 °C. [21] Bao et al. reported an all-solid-state planar with activated graphene as the cathode; the planar showed excellent electrochemical performance and safety at 80 °C. [22] However, the cycling stability was unsatisfactory, and the inherent low energy density of pure carbon resulted in a limited application. Motivated by this challenging issue, researchers have conducted studies to improve the electrochemical property. Recent research has shown that the doping of nitrogen (N), boron (B), phosphorus (P), sulfur (S), and fluorine (F) heteroatoms in carbon frame can improve the stability and energy density of carbon materials. [23][24][25][26][27] For example, Feng et al. reported graphene aerogels with N and B doping; the aerogels showed an enhanced energy density of 8.65 W h kg −1 and improved cycling stability close to 100% after 1000 cycles. [28] Our previous work also proved that the introduction of B and N can alter the electrostatic attraction of materials, thereby expanding the operating voltage window to 4.8 V and resulting in a high energy density of 200 Wh kg −1 . [29] Furthermore, the inserted B and N in C lattice structures can effectively improve the charge density and activate the C electron around B and N. [30] Carbon nanomaterials have elicited much research interest in the energy storage field, but most of them cannot be used at high temperatures. Thus, a supercapacitor with high energy and desired stability at high temperatures is urgently required. Herein, BCN nanotubes (BCNNTs) with excellent performance at high temperatures are generated on carbon fibers by optimizing the ratio of B and N. The nanotubes' morphology can effectively alleviate the structural damage caused by the rapid adsorption/ desorption of the electrolyte during long-time charge/discharge cycles at high temperatures, thus improving the high-temperature cycle stability. The symmetric supercapacitors that are assembled with...

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An ionic liquid incorporated in a quasi-solid-state electrolyte for high-temperature supercapacitor applications

Abstract: An ionic liquid incorporated in a cross-linked quasi-solid-state electrolyte is prepared for high-temperature application of supercapacitors.

Cited by 44 publications

References 31 publications

Heat-Resistant and High-Performance Solid-State Supercapacitors Based on Poly(para-phenylene terephthalamide) Fibers via Polymer-Assisted Metal Deposition

Heat-Resistant and High-Performance Solid-State Supercapacitors Based on Poly(para-phenylene terephthalamide) Fibers via Polymer-Assisted Metal Deposition

Nitrogen-doped hollow carbon nanoboxes in zwitterionic polymer hydrogel electrolyte for superior quasi-solid-state zinc-ion hybrid supercapacitors

In Situ Growing BCN Nanotubes on Carbon Fibers for Novel High‐Temperature Supercapacitor with Excellent Cycling Performance

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