Enhance supercapacitive performance of MnO2/3D carbon nanotubes-graphene as a binder-free electrode

Bi, Tiantian; Fang, Huaqing; Jiang, Jinlong; He, Xingxing; Zhen, Xuan; Yang, Hua; Wei, Zhiqiang; Jia, Zhengfeng

doi:10.1016/j.jallcom.2019.02.117

Cited by 47 publications

(21 citation statements)

References 58 publications

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“…Indeed, all reported composite electrodes based on G/rGO-CNT with MnO 2 were tested in the Na 2 SO 4 electrolyte as seen in Table S6 in Supplementary Materials . Comparing the values for the composites prepared with and without MnO 2 (also shown in Table S6 ) it can be seen that MnO 2 as a redox oxide can significantly increase the specific capacitance of rGO/CNT composite [ 47 , 48 , 49 , 50 , 51 ].…”

Section: Modified G/rgo-cnt Electrodes With Faradaic Contributionmentioning

confidence: 99%

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Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour

Okhay

Tkach

2021

Nanomaterials

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Thanks to the advanced technologies for energy generation such as solar cells and thermo- or piezo-generators the amount of electricity transformed from light, heat or mechanical pressure sources can be significantly enhanced. However, there is still a demand for effective storage devices to conserve electrical energy which addresses the wide range of large stationary applications from electric vehicles to small portable devices. Among the large variety of energy-storage systems available today, electrochemical energy sources and, in particular, supercapacitors (SC), are rather promising in terms of cost, scaling, power management, life cycle and safety. Therefore, this review surveys recent achievements in the development of SC based on composites of such carbon-derived materials as graphene (G) and reduced graphene oxide (rGO) with carbon nanotubes (CNT). Various factors influencing the specific capacitance are discussed, while specific energy and power as well as cycling stability of SC with G/rGO-CNT composite electrode materials are overviewed.

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Section: Modified G/rgo-cnt Electrodes With Faradaic Contributionmentioning

confidence: 99%

“…The highest enhancement was reported by Bi et al for the layered structure of graphene and CNT decorated by MnO 2 on Cu foil [ 47 ]. The long and complicated preparation of layered G/CNT with MnO 2 structure included CVD, immersion, a thermal decomposition process, etc.…”

Section: Modified G/rgo-cnt Electrodes With Faradaic Contributionmentioning

confidence: 99%

Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour

Okhay

Tkach

2021

Nanomaterials

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“…This composite material exerts a synergistic effect of electrical/mechanical benefits of CNTs and large pseudocapacitance of MnO 2 , achieving expected high specific capacity and long cycle durability. The preparation of MnO 2 /CNT composite electrode materials can be achieved by various synthetic methods such as electrodeposition techniques Jeong et al, 2019), hydrothermal treatment (Ramesh et al, 2017), microwave-assisted methods (Yan et al, 2009;Li M. et al, 2017), chemical coprecipitation (Subramanian et al, 2006), and thermal decomposition (Liu et al, 2017;Bi et al, 2019). In 2006, amorphous δ-MnO 2 and SWCNT composite electrode materials were first studied.…”

Section: Synthesis and Properties Of Mno 2 /Carbon Composites For Supmentioning

confidence: 99%

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

et al. 2020

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As an emerging energy storage device, the supercapacitor with high energy density, fast charging/discharging, and good cycle stability has aroused great interest. The performance of supercapacitors mainly depend on the electrode material. Manganese dioxide (MnO 2) has emerged as one of the most promising electrode materials for high theoretical specific capacitance, wide potential range, high electrochemical activity, and environmental friendliness. However, its deteriorated volume expansion and inherently low conductivity limit its development and application in supercapacitors. To circumvent the mentioned issues, the porous, thin film, or layered composite materials were prepared to enhance the electrical conductivity and specific surface area of MnO 2. Carbon materials are the ideal choice to compound with MnO 2 owing to their low electrical resistance, significant thermal stability, large specific surface area, and porosity. Up to now, several kinds of MnO 2 /carbon composites as supercapacitor electrodes have been designed and fabricated. Herein, we give a concise review of the latest researches on MnO 2 /carbon supercapacitor electrodes, focusing on the fabrication strategies and analyzing the influencing factors of electrochemical performance of MnO 2 /carbon materials. An outlook on the possible development directions in future of designing high-performance MnO 2 /carbon materials for the current challenges is also provided.

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“…[ 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. [ 143 ] Unlike to this, a helix model cable electrode with 80% superflexibility was fabricated by combining the CNT and graphene where the MnO 2 spheres were electrodeposited.…”

Section: Conventional Electrode Materialsmentioning

confidence: 99%

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

Benzigar

Dasireddy²,

Guan

et al. 2020

Adv Funct Materials

126

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The progressive size reduction of electronic components is experiencing bottlenecks in shrinking charge storage devices like batteries and supercapacitors, limiting their development into wearable and flexible zero-pollution technologies. The inherent long cycle life, rapid charge-discharge patterns, and power density of supercapacitors rank them superior over other energy storage devices. In the modern market of zero-pollution energy devices, currently the lightweight formula and shape adaptability are trending to meet the current requirement of wearables. Carbon nanomaterials have the potential to meet this demand, as they are the core of active electrode materials for supercapacitors and texturally tailored to demonstrate flexible and stretchable properties. With this perspective, the latest progress in novel materials from conventional carbons to recently developed and emerging nanomaterials toward lightweight stretchable active compounds for flexi-wearable supercapacitors is presented. In addition, the limitations and challenges in realizing wearable energy storage systems and integrating the future of nanomaterials for efficient wearable technology are provided. Moreover, future perspectives on economically viable materials for wearables are also discussed, which could motivate researchers to pursue fabrication of cheap and efficient flexible nanomaterials for energy storage and pave the way for enabling a widerange of material-based applications.

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Enhance supercapacitive performance of MnO2/3D carbon nanotubes-graphene as a binder-free electrode

Cited by 47 publications

References 58 publications

Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour

Graphene/Reduced Graphene Oxide-Carbon Nanotubes Composite Electrodes: From Capacitive to Battery-Type Behaviour

MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance

Advances on Emerging Materials for Flexible Supercapacitors: Current Trends and Beyond

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