2018
DOI: 10.1088/1361-6528/aab4c2
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Uniformly coated highly porous graphene/MnO2foams for flexible asymmetric supercapacitors

Abstract: Supercapacitors are called to play a prominent role in the newly emerging markets of electric vehicles, flexible displays and sensors, and wearable electronics. In order to compete with current battery technology, supercapacitors have to be designed with highly conductive current collectors exhibiting high surface area per unit volume and uniformly coated with pseudocapacitive materials, which is crucial to boost the energy density while maintaining a high power density. Here, we present a versatile technique … Show more

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Cited by 18 publications
(8 citation statements)
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“…However, this quasi-solid-state ASC still achieves an impressive C s and energy densities (Figure e,f). The maximum C s and energy density of our quasi-solid-state ASC are calculated to be 234 mF cm –2 and 0.104 mWh cm –2 , respectively, which are much better than the values reported for many similar solid-state ASC devices (Figure e,f). , To further explore the flexibility of our quasi-solid-state ASC, its CV curves under various bending angles were tested and compared in Figure g. The CV curves are almost changeless under different bending angels, indicating its good flexibility.…”
Section: Resultsmentioning
confidence: 71%
See 2 more Smart Citations
“…However, this quasi-solid-state ASC still achieves an impressive C s and energy densities (Figure e,f). The maximum C s and energy density of our quasi-solid-state ASC are calculated to be 234 mF cm –2 and 0.104 mWh cm –2 , respectively, which are much better than the values reported for many similar solid-state ASC devices (Figure e,f). , To further explore the flexibility of our quasi-solid-state ASC, its CV curves under various bending angles were tested and compared in Figure g. The CV curves are almost changeless under different bending angels, indicating its good flexibility.…”
Section: Resultsmentioning
confidence: 71%
“…In addition, both the CV curve and the Nyquist plot only exhibit a slight change before and after the cycling test (the insets of Figure 4g), further confirming a good cycling stability of this ASC. As a demonstration, a quasi-solid-state MnO 2 @CC//ACF ASC was further assembled to explore the feasibility of the as- 39 blue triangle up solid, 52 green triangle down solid, 41 purple diamond solid, yellow triangle left-pointing solid, 53 brown triangle right-pointing solid 54 ) and (f) energy densities (red circle solid, 39 blue triangle up solid, 40 green triangle down solid, 41 purple diamond solid, 42 yellow triangle left-pointing solid 43 ) of this quasi-solid-state ASC and similar ASCs. prepared ACF for practical applications.…”
Section: Electrochemical Properties Of Ascmentioning
confidence: 99%
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“…But the addition of the Ni–Cu alloy as the substrate the GE foams coated with the MnO 2 with similar principle resulted in stable 1000 bending cycles even after bending up to the angle 180° confirming mechanical strength and elasticity. [ 141 ] While, the Mn precursor under thermal degradation loaded on CNT/GR hybrid composite were also carried out in a single step synthesis route. [ 142 ] When the carbon fiber was added tothe similar hybrid composite with rGO, an increase in the capacitance and bending stability could be observed.…”
Section: Conventional Electrode Materialsmentioning
confidence: 99%
“…However, traditional strain sensors made with metals, alloys, or piezoresistors have poor stretchability and flexiblility which limit their application areas as flexible electronics . Nowadays, more considerable attention is focused on flexible strain sensors due to their diverse applications in electronic skin, wearable electronics, soft robotics, smart textiles, and structural health monitoring, etc. A variety of carbonaceous nanomaterials or even metals were used to compound with flexible matrix as conductive fillers, such as carbon black (CB), carbon nanotube (CNT), and graphene, etc .…”
Section: Introductionmentioning
confidence: 99%