Rational design of MXene/activated carbon/polyoxometalate triple hybrid electrodes with enhanced capacitance for organic-electrolyte supercapacitors

Zhu, Jun‐Jie; Avireddy, Hemesh; Biendicho, Jordi Jacas; Martinez-Soria, Luis; Rueda-García, Daniel; Morante, Joan Ramón; Ballesteros, Belén; Gómez‐Romero, Pedro

doi:10.1016/j.jcis.2022.04.170

Cited by 33 publications

(18 citation statements)

References 55 publications

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“…CTAMX-PW12 delivered higher specific capacitance than TBAMX-PW12 and TMAMX-PW12 in the whole range, which must be attributed to the larger interlayer distance. 31 However, compared with pristine MXene (30 F g -1 at 10 mV s -1 in the same electrolyte 35 ), the inclusion of CTAPW12 did not enhance the capacitance remarkably. PW12 has a large molecular weight (> 2800 g mol -1 ), making it less effective to enhance specific capacitance but more effective to enhance volumetric capacitance.…”

Section: Resultsmentioning

confidence: 95%

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Polyoxometalate intercalated MXene with enhanced electrochemical stability

Zhu

Gómez‐Romero

2022

Nanoscale

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Section: Resultsmentioning

confidence: 95%

“…This phenomenon was also reported in other direct-anchored MXene/POM hybrid materials. 35 The PW12 clusters are around 1 nm. If we only consider the size, the interlayer space of around 1.4 nm can accommodate the PW12 clusters.…”

Section: Resultsmentioning

confidence: 99%

Polyoxometalate intercalated MXene with enhanced electrochemical stability

Zhu

Gómez‐Romero

2022

Nanoscale

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“…Recently, POMs have been regarded as one of the most promising materials for supercapacitors and H 2 O 2 -sensing electrodes due to their reversible redox activity, high charge density and electron storage capacity. In the existing literature, hybrids of Keggin-type POMs have been studied more [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. However, Dawson-type POMs are rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterial with Core–Shell Structure Composed of {P2W18O62} and Cobalt Homobenzotrizoate for Supercapacitors and H2O2-Sensing Applications

Zhang

Lin

et al. 2023

Nanomaterials

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Designing and preparing dual-functional Dawson-type polyoxometalate-based metal–organic framework (POMOF) energy storage materials is challenging. Here, the Dawson-type POMOF nanomaterial with the molecular formula CoK4[P2W18O62]@Co3(btc)2 (abbreviated as {P2W18}@Co-BTC, H3btc = 1,3,5-benzylcarboxylic acid) was prepared using a solid-phase grinding method. XRD, SEM, TEM et al. analyses prove that this nanomaterial has a core–shell structure of Co-BTC wrapping around the {P2W18}. In the three-electrode system, it was found that {P2W18}@Co-BTC has the best supercapacitance performance, with a specific capacitance of 490.7 F g−1 (1 A g−1) and good stability, compared to nanomaterials synthesized with different feedstock ratios and two precursors. In the symmetrical double-electrode system, both the power density (800.00 W kg−1) and the energy density (11.36 Wh kg−1) are greater. In addition, as the electrode material for the H2O2 sensor, {P2W18}@Co-BTC also exhibits a better H2O2-sensing performance, such as a wide linear range (1.9 μM–1.67 mM), low detection limit (0.633 μM), high selectivity, stability (92.4%) and high recovery for the detection of H2O2 in human serum samples. This study provides a new strategy for the development of Dawson-type POMOF nanomaterial compounds.

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“…[16,17] Yu et al [18] synthesized three new POM-based supramolecular frameworks and directly used as supercapacitor electrode material, which exhibited high specific capacitance and excellent capacitance retention. Zhu et al [19] prepared a Mxene/activated carbon/POMs triple hybrid electrode which facilitated charge storage, resulting in improved volumetric and gravimetric capacitances. Apparently, POMs can be used as candidate bifunctional material for electrochromic and energy storage devices.…”

Section: Introductionmentioning

confidence: 99%

Bifuntional Materials Containing Preyssler‐type Polyoxometalates and Iron Phenanthroline Stabilized with Poly (Allylamine Hydrochloride) for Electrochromic Energy Storage Devices

et al. 2022

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Electrochromic supercapacitors have received extensive attention owing to their ability to combine electrochromism and energy storage properties. In this paper, a bifunctional electrode material based on Preyssler-type tungstophosphate (P 5 W 30 ), polyelectrolyte poly(allylamine hydrochloride) chain (PAH) modified by the iron complex (Fe(phen) 3 ) was synthesized by Layer-by-Layer method (LbL). Compared with the film without PAH, the composite film displays large optical contrast (35.17 %), fast response time (2.49/0.90 s for coloring/bleaching), great coloration efficiency (94.73 cm 2 • C À 1 ) and high specific capacitance (10.45 mF cm À 2 ). Moreover, the good cycling stability (83.66 % retention of the original optical modulation after 1500 cycles, capacity retention rate is 91.46 % after 500 cycles) is achieved. In addition, the composite film is also able to visually detect the energy storage level through reversible and rapid color changes, and further use it to assemble device. This work provides an promising candidate for electrochromic and energy storage devices.

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Rational design of MXene/activated carbon/polyoxometalate triple hybrid electrodes with enhanced capacitance for organic-electrolyte supercapacitors

Cited by 33 publications

References 55 publications

Polyoxometalate intercalated MXene with enhanced electrochemical stability

Polyoxometalate intercalated MXene with enhanced electrochemical stability

Nanomaterial with Core–Shell Structure Composed of {P2W18O62} and Cobalt Homobenzotrizoate for Supercapacitors and H2O2-Sensing Applications

Bifuntional Materials Containing Preyssler‐type Polyoxometalates and Iron Phenanthroline Stabilized with Poly (Allylamine Hydrochloride) for Electrochromic Energy Storage Devices

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