“…7d exhibits the specific capacitance of the MM//PM ASC with different charging current densities. The specific capacitance decreases with the increasing of current density, indicating less active material access and reducing the effective utilization of material at a higher scan rate [20]. Among them, the maximum specific capacitance of 138.13 F/g is observed for the quasi-solid-state MM//PM ASC at 1 A/g.Fig.…”
Molybdenum disulfide (MoS
2
) and polyaniline (PANI) electrodes were decorated with multi-walled carbon nanotubes (MWCNTs) on the basis of a facial hydrothermal and in situ polymerization methods and served in the asymmetric supercapacitor (ASC). The MoS
2
and MWCNTs with a mole ratio of 1:1 in MoS
2
|MWCNTs electrode exhibited better electrochemical properties through extensive electrochemical studies, in terms of the highest specific capacitance of 255.8 F/g at 1 A/g, low internal resistance, and notable electrochemical stability with retention of the initial specific capacitance at 91.6% after 1000 cycles. The as-prepared PANI|MWCNTs electrode also exhibited good specific capacitance of 267.5 F/g at 1 A/g and remained 97.9% capacitance retention after 1000 cycles. Then, the ASC with MoS
2
|MWCNTs and PANI|MWCNTs composite electrodes were assembled with polyvinyl alcohol (PVA)-Na
2
SO
4
gel electrolyte, which displayed good electrochemical performance with the specific capacitance of 138.1 F/g at 1 A/g, and remained the energy density of 15.09 Wh/kg at a high power density of 2217.95 W/kg. This result shows that this ASC device possesses excellent electrochemical properties of high energy density and power output and thus showing a potential application prospect.
“…7d exhibits the specific capacitance of the MM//PM ASC with different charging current densities. The specific capacitance decreases with the increasing of current density, indicating less active material access and reducing the effective utilization of material at a higher scan rate [20]. Among them, the maximum specific capacitance of 138.13 F/g is observed for the quasi-solid-state MM//PM ASC at 1 A/g.Fig.…”
Molybdenum disulfide (MoS
2
) and polyaniline (PANI) electrodes were decorated with multi-walled carbon nanotubes (MWCNTs) on the basis of a facial hydrothermal and in situ polymerization methods and served in the asymmetric supercapacitor (ASC). The MoS
2
and MWCNTs with a mole ratio of 1:1 in MoS
2
|MWCNTs electrode exhibited better electrochemical properties through extensive electrochemical studies, in terms of the highest specific capacitance of 255.8 F/g at 1 A/g, low internal resistance, and notable electrochemical stability with retention of the initial specific capacitance at 91.6% after 1000 cycles. The as-prepared PANI|MWCNTs electrode also exhibited good specific capacitance of 267.5 F/g at 1 A/g and remained 97.9% capacitance retention after 1000 cycles. Then, the ASC with MoS
2
|MWCNTs and PANI|MWCNTs composite electrodes were assembled with polyvinyl alcohol (PVA)-Na
2
SO
4
gel electrolyte, which displayed good electrochemical performance with the specific capacitance of 138.1 F/g at 1 A/g, and remained the energy density of 15.09 Wh/kg at a high power density of 2217.95 W/kg. This result shows that this ASC device possesses excellent electrochemical properties of high energy density and power output and thus showing a potential application prospect.
“…Figure a exhibits the Ragone plots of the ASC and the device shows high energy density of 29.2 Wh kg −1 at 449.8 W kg −1 and still maintained 6.4 Wh kg −1 at high power density of 4517.7 W kg −1 . The device is superior to the recently reported MoS 2 electrode material in both energy density and power density, such as MoS 2 /RCF//MnO 2 /RCF (22.5 Wh kg −1 at 703 W kg −1 ), PIn/CB/MoS 2 (8.71 Wh kg −1 at 217 W kg −1 ), PANI/MoS 2 /CC (17.18 Wh kg −1 at 420 W kg −1 ), BCN/MoS 2 (9.8 Wh kg −1 at 258 W kg −1 ) and SNG/MoS 2 //SNG/MoS 2 (13.54 Wh kg −1 at 500 W kg −1 ) . Figure b exhibits the cycling performance of ASC at 2Ag −1 , which could remain 80% of its initial capacitance after 6000 cycles, indicating excellent cycle stability.…”
Molybdenum disulfide (MoS2) is a two‐dimensional layer structure with high edge energy state, resulting in high chemical activity. It can be widely used in the supercapacitors. Herein, a novel conductive architectures of MoS2/reduced graphene oxide (rGO) nanosheets was immobilized on carbon cloth (CC) via hydrothermal method. The MoS2/rGO nanosheets are uniformly grown on CC, which can provide a higher specific surface area and increase additional active sites. The intimate contact between nanostructured MoS2/rGO and active CC is in favor of maintaining the stability of structure. As a result, MoS2/rGO as a supercapacitor electrode material shows high specific capacitance of 331 F g−1 at 0.75 A g−1 and excellent cycling stability with a specific capacitance retention of 110.7% after 15000 cycles. Moreover, the asymmetric supercapacitor is assembled and the device shows a high energy density of 29.2 Wh kg−1 and a high power density of 4517.7 W kg−1. These results indicate that MoS2/rGO as an electrode material has an important application potential in supercapacitors.
“…Polyaniline (PANI) shows excellent pseudocapacitive behavior in acid electrolyte mainly due to its high conductivity, which is conducive to ultrafast charge transport [28,29] . Introducing polyaniline into the interlayer of RuO 2 can effectively prevent high‐active RuO 2 from self‐restacking, as well as alleviate structural breakdown of PANI chains during the electrochemical reaction progress because of its sandwich structure [30] . Therefore, a heterostructured PANI/RuO 2 nanocomposite combining two different types of pseudocapacitive materials were fabricated by the intercalation of PANI nanofibres into the delaminated RuO 2 nanosheets using in‐situ oxidative polymerization method.…”
Section: Introductionmentioning
confidence: 99%
“…[28,29] Introducing polyaniline into the interlayer of RuO 2 can effectively prevent high-active RuO 2 from self-restacking, as well as alleviate structural breakdown of PANI chains during the electrochemical reaction progress because of its sandwich structure. [30] Therefore, a heterostructured PANI/RuO 2 nanocomposite combining two different types of pseudocapacitive materials were fabricated by the intercalation of PANI nanofibres into the delaminated RuO 2 nanosheets using in-situ oxidative polymerization method. Due to its unique intercalated structure and synergistic contribution of both the components, the optimal PANI/RuO 2 -38 electrode delivers a high gravimetric capacity, good rate performance, and a long durability.…”
Ruthenium oxide (RuO2) and polyaniline (PANI) are attracting extensive attention as electrode materials due to their remarkable pseudocapacitance. However, RuO2 suffers from low utilization and PANI sustains poor stability. Herein, both defects were optimized by designing intercalated‐structure PANI/RuO2 composites, which were fabricated for the first time by controllable chemical polymerization of aniline on the delaminated RuO2 nanosheets. Intercalated PANI nanofibers not only highly prevent the RuO2 nanosheets from their reassembling as well as increase the interlayer spacing among RuO2 nanosheets but also alleviate the swelling/shrinking of PANI during charge‐discharge progress. In comparison to the pristine RuO2 nanosheets, the obtained intercalated structure is beneficial for creating channels for better ion transfer and electron transport, which leads to a high‐efficiency utilization of RuO2 nanosheets. The optimized PANI/RuO2‐38 electrode with a RuO2 content of 61.7 wt% shows the highest utilization of 72.1 % of RuO2, resulting in the highest specific capacity of 816 F g−1. The asymmetric supercapacitor PANI/RuO2//AC offers a high energy density of 25.7 Wh kg−1 at 375 kW kg−1, further indicating a good potential as energy‐storage device.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
