Carbon‐MEMS‐Based Alternating Stacked MoS<sub>2</sub>@rGO‐CNT Micro‐Supercapacitor with High Capacitance and Energy Density

Yang, Wei; He, Liang; Tian, Xiaocong; Yan, Mengyu; Yuan, Hui; Liao, Xiaobin; Meng, Jiashen; Hao, Zhimeng; Mai, Liqiang

doi:10.1002/smll.201700639

Cited by 152 publications

(71 citation statements)

References 43 publications

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“…As shown in Fig. 5h, the areal and gravimetric values are plotted in violet and orange, respectively, and it shows that a high energy density of 0.013 mWh cm −2 (5.55 Wh kg −1 ) was achieved at a power density of 0.24 mW cm −2 (100 W kg −1 ), which is comparable and even superior to the recently reported studies with the interdigital configuration based on MoS 2 @ rGO (0.0019 mWh cm −2 at 0.08 mW cm −2 ) [38], 3D graphene (0.00042 mWh cm −2 at 1 mW cm −2 ) [62], polyaniline (0.00092 mWh cm −2 at 1 mW cm −2 ) [63], graphene film (0.0025 mWh cm −2 at 1.2 mW cm −2 ) [64], cellular graphene film (0.00022 mWh cm −2 at 0.98 mW cm −2 ) [65], graphene/ CNTs film (0.00034 mWh cm −2 at 0.68 mW cm −2 ) [66], MnO 2 CNTs (0.00088 mWh cm −2 at 0.16 mW cm −2 ) [67].…”

Section: Electrochemical Properties Of the All-solid-state Embroiderysupporting

confidence: 55%

“…Instead, more works paid their attention to the pure synthesis of the electroactive materials [31][32][33]. And the commonly reported flexible substrates mainly include carbon-derived materials (e.g., activated carbon (AC), carbon nanotubes (CNTs), and graphene) [34][35][36], polymer-based films (e.g., PET) [37][38][39], and metallic foils (e.g., Cu foil and Ti foil) [40,41], which showed only limited flexibility when compared to the real garments. By contrast, the embroidery stitches, originating from the conventional hand sewing, can not only produce various patterns on the fabric, but also realize the standardized batch processing via the computer-aided programming techniques [42].…”

Section: Introductionmentioning

confidence: 99%

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Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Wen

Zhou

2019

Nano-Micro Lett.

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HIGHLIGHTS• The conductive silver-plated nylon yarns fully fit the demand for wearable supercapacitor skeleton, owing to the advantages of high conductivity and flexibility.• The computerized programming embroidering technique was firstly applied for realizing standardized batch processing of the flexible supercapacitor skeleton in various patterns.• Cobalt phosphides were properly electrodeposited on the conductive embroidery as the pseudocapacitive materials, providing remarkable electrochemical performance. ABSTRACT Wearable supercapacitors (SCs)are gaining prominence as portable energy storage devices. To develop high-performance wearable SCs, the significant relationship among material, structure, and performance inspired us with a delicate design of the highly wearable embroidered supercapacitors made from the conductive fibers composited. By rendering the conductive interdigitally patterned embroidery as both the current collector and skeleton for the SCs, the novel pseudocapacitive material cobalt phosphides were then successfully electrodeposited, forming the first flexible and wearable in-plane embroidery SCs. The electrochemical measurements manifested that the highest specific capacitance was nearly 156.6 mF cm −2 (65.72 F g −1 ) at the current density of 0.6 mA cm −2 (0.25 A g −1 ), with a high energy density of 0.013 mWh cm −2 (5.55 Wh kg −1 ) at a power density of 0.24 mW cm −2 (100 W kg −1 ). As a demonstration, a monogrammed pattern was ingeniously designed and embroidered on the laboratory gown as the wearable in-plane SCs, which showed both decent electrochemical performance and excellent flexibility.

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Section: Electrochemical Properties Of the All-solid-state Embroiderysupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Wen

Zhou

2019

Nano-Micro Lett.

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“…[1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors. [1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors.…”

mentioning

confidence: 99%

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Huang

Zhang

et al. 2018

Adv Elect Materials

108

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as well as light-weight, remarkable flexibility, and security. [1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors. [20][21][22] Although these breakthroughs were made, development of MSCs is still in its infancy. And lots of importance and challenges such as 3D architecture design, highconductive leakage-free electrolytes, low self-discharge effect, large-scale on-chip integration at microscale, high mechanical reliability, and outstanding performances in areal and volumetric need to be further addressed. Similar to conventional supercapacitors with inflexibility and liquid electrolytes, the intrinsic properties of the electrode materials, which are critical to high-performance supercapacitors and the method of electrode fabrication, evidently play the most important role in developing state-of-the-art MSCs. In this respect, it is the key to find one material that possesses both outstanding mechanical flexibility and electrochemical performance.MXenes, one kind of novel 2D materials, are promising candidates for developing state-of-the-art MSCs because of their outstanding electrical conductivity, superior areal and Approaching state-of-the-art areal and volumetric capacitances while maintaining high-power characteristic is a big challenge that promotes practical application of flexible solid-state micro-supercapacitors (MSCs), which have recently attracted great attention with the rapid development of flexible microelectronics. Herein, it is reported that freestanding extrahigh conductive Ti 3 C 2 T x (MXene) films with excellent flexibility and effectively controlled thickness ranging from 1-21 µm performed as excellently scalable and flexible solid-state MSCs owing to their ultrahigh underlying electrical conductivity (up to 1.25 × 10 5 S m −1 ) and self-functionalized surfaces (O, OH, and F terminations). Amazingly, freestanding conductive Ti 3 C 2 T x based flexible solid-state MSCs with interdigital electrodes and polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) gel electrolyte display outstanding areal capacitances of 340 mF cm −2 at 0.25 mA cm −2 based on the two working electrodes. Moreover, the maximum corresponding volumetric capacitance and energy density of flexible solid-state MSCs reach up to 183 F cm −3 and 12.4 mWh cm −3 , which is on the topmost level among all the unconventional supercapacitors to date. Compared with materials currently used in MSCs, this freestanding conductive Ti 3 C 2 T x shows potential and scalability in increasing overall

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“…Furthermore, this Ni//Bi MB can reach a remarkable energy density of 9.5 μWh cm −2 at a high power density of 3.98 mW cm −2 , demonstrating the superior charge–discharge capability of Ni//Bi MB. These energy densities are higher than those of MnO 2 ‐based MSC, MoS 2 /reduced graphene oxide‐carbon nanotube (rGO‐CNT) MSC, MnO 2 //Fe 2 O 3 MSC, and 3D graphene pellet (GP)‐MSC, and the competitive advantages in electrochemical performance make the planar Ni//Bi MB highly promising for practical applications.…”

Section: Resultsmentioning

confidence: 99%

Ultrastable High‐Energy On‐Chip Nickel–Bismuth Microbattery Powered by Crystalline Bi Anode and Ni–Co Hydroxide Cathode

Hong

et al. 2019

Energy Tech

Self Cite

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On‐chip microbatteries (MBs) with excellent electrochemical performance have attracted great attention for applications in miniaturized electronics. However, the lack of strategy for well‐suited integration of microelectrodes with decent mechanical properties and high electrochemical performance in microdevices restricts the development of on‐chip MBs. This work proposes a promising planar nickel–bismuth (Ni//Bi) MB, constructed through the microelectromechanical system‐based fabrication process and facile electrodeposition of Bi anode and Ni1−xCox(OH)2 cathode. Benefiting from the large surface area and effective integration of electrodes, the fabricated Ni//Bi MB achieves a relatively high energy density of 12.3 μWh cm−2 and high stability with 84.44% capacity retention after 1000 cycles. With an attractive fabrication technique and outstanding electrochemical performance, the Ni//Bi MB shows great potential for prospective applications in portable devices/systems.

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Carbon‐MEMS‐Based Alternating Stacked MoS₂@rGO‐CNT Micro‐Supercapacitor with High Capacitance and Energy Density

Cited by 152 publications

References 43 publications

Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Ultrastable High‐Energy On‐Chip Nickel–Bismuth Microbattery Powered by Crystalline Bi Anode and Ni–Co Hydroxide Cathode

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Carbon‐MEMS‐Based Alternating Stacked MoS2@rGO‐CNT Micro‐Supercapacitor with High Capacitance and Energy Density

Cited by 152 publications

References 43 publications

Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Toward Flexible and Wearable Embroidered Supercapacitors from Cobalt Phosphides-Decorated Conductive Fibers

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti3C2Tx Films

Ultrastable High‐Energy On‐Chip Nickel–Bismuth Microbattery Powered by Crystalline Bi Anode and Ni–Co Hydroxide Cathode

Contact Info

Product

Resources

About

Carbon‐MEMS‐Based Alternating Stacked MoS₂@rGO‐CNT Micro‐Supercapacitor with High Capacitance and Energy Density

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films