Graphene's Role in Emerging Trends of Capacitive Energy Storage

Wang, Chenxiang; Muni, Mit; Strauß, Volker; Borenstein, Arie; Chang, Xueying; Huang, Ailun; Qu, Sanyin; Sung, Kimberly; Gilham, Tera; Kaner, Richard B.

doi:10.1002/smll.202006875

Cited by 32 publications

(20 citation statements)

References 184 publications

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“…Conductive 2D materials readily overcome two bottlenecks of both the surface area and resistance. Typically, graphene is one of the most ideal materials to achieve this, and there has been significant related research into graphene 1305,1306 . Even graphene synthesized using simple laser-induced reduction of graphene oxide or polymer could achieve capacitance in the range of 10 mF•cm −2 and up to 32 mF•cm −2 using KOH activation [1307][1308][1309] .…”

Section: D Materials For Micro-supercapacitorsmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

295

119

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Research on two-dimensional (2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications.In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief background 物理化学学报 Acta Phys. -Chim. Sin. 2021, 37 (12), 2108017 (3 of 151) introduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials (PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.

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Section: D Materials For Micro-supercapacitorsmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

295

119

View full text Add to dashboard Cite

show abstract

“…Because of the increasing energy demand, fuel cells have attracted considerable interest, as they are an environmentally friendly and efficient alternative energy source for many applications [135][136][137] . There is a plethora of articles on the use of functionalized GO for energy-related applications 15,138,139 .…”

Section: Energy Applicationsmentioning

confidence: 99%

Controlling covalent chemistry on graphene oxide

et al. 2022

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“…The booming portable and wearable electronics have raised huge demands on the development of power sources with a high power density as well as flexible configuration. − Benefiting from the short charging time, long cycling stability, and structure designability, supercapacitors have been considered promising energy storage candidates for modern electronics. , Recently, graphene has emerged as a promising material for energy storage applications because of its high electrical conductivities, large specific surface areas, and excellent electrochemical properties. , The modification of graphene-based electrode materials, including optimizing the pore structures, − defect engineering, or introducing abundant pseudocapacitive components , are adopted to enhance the energy storage ability. Besides, many efforts have been made on constructing 3D architecture electrodes to achieve a high mass loading. ,− However, conventional sandwich supercapacitors (Figure a) always suffer from the finite thickness for efficient ion transport between electrodes and electrolytes, inducing low area power density . Recently, in-plane supercapacitors (Figure b) with the interdigitated design can increase electrode materials loading by increasing the thickness to achieve high area energy density.…”

Section: Introductionmentioning

confidence: 99%

Spatial-Interleaving Graphene Supercapacitor with High Area Energy Density and Mechanical Flexibility

et al. 2022

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The booming portable electronics market has raised huge demands for the development of supercapacitors with mechanical flexibility and high power density in the finite area; however, this is still unsatisfied by the currently thickness-confined sandwich design or the in-plane interdigital configuration with limited mechanical features. Here, a spatial-interleaving supercapacitor (SI-SC) is first designed and constructed, in which the graphene microelectrodes are reversely stacked layer by layer within a three-dimensional (3D) space. Because each microelectrode matches well with four counter microelectrodes and all 3D spatial-interleaving microelectrodes have narrow interspaces that maintain the efficient ions transport in the whole device, this SI-SC has a prominent liner capacitance increase along with the device thickness. As a result, the high specific areal capacitance of 36.46 mF cm–2 and 5.34 μWh cm–2 energy density is achieved on the 100 μm thick device. Especially, the microelectrodes in each layer are interdigitated, ensuring the outstanding mechanical flexibility of SI-SC, with ∼98.7% performance retention after 104 cycles of bending tests, realizing the excellent integration of high area energy density and mechanical flexibility in the finite area. Furthermore, the SI-SC units can be easily integrated into wearable electronics to power wristwatches, light-emitting diodes (LEDs), calculators, and so on for practical applications.

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Graphene's Role in Emerging Trends of Capacitive Energy Storage

Cited by 32 publications

References 184 publications

Recent Progress on Two-Dimensional Materials

Recent Progress on Two-Dimensional Materials

Controlling covalent chemistry on graphene oxide

Spatial-Interleaving Graphene Supercapacitor with High Area Energy Density and Mechanical Flexibility

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