Large-scale synthesis of highly porous carbon nanosheets for supercapacitor electrodes

Wang, Yanzhong; Liu, Yang; Liu, Wei; Zhang, Guoxiang; Liu, Guiwu; Chen, Huiyu; JinlongYang,

doi:10.1016/j.jallcom.2016.03.232

Cited by 69 publications

(24 citation statements)

References 43 publications

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“…Based on the above properties, crystal salt particles have been widely used as templates for the synthesis of nanomaterials. [ 13,47–69 ] The universal procedure comprises coating a precursor solution on the salt template, heat treating in a tube furnace under specific atmosphere, and washing out of the salt template with DI water to obtain 2D materials. [ 48–51,58,59 ] Differing from the CVD and other template methods, STM has the following characteristics: 1) Considering the removal of template, salt templates can be easily removed using water, as most salts are water soluble, whereas graphene and SBA‐15 require treatment with high temperatures or strong acid or base solutions.…”

Section: Stmmentioning

confidence: 99%

“…Carbon materials are of excellent electronic conductivity, chemical activity and durability, light weight, and high SSA; thus, they are widely used as catalysts, [ 45,64 ] electronic materials, [ 50,62 ] and adsorbents. [ 46 ] Carbon materials with 2D morphology have a unique electron transport channel due to confined 2D structure features such as graphene.…”

Section: Stmmentioning

confidence: 99%

“…[ 46 ] Carbon materials with 2D morphology have a unique electron transport channel due to confined 2D structure features such as graphene. [ 34 ] Salt templates can provide a confined growing space and is an effective synthesis route to produce carbon materials including graphene, [ 46 ] porous carbon, [ 45,50,62 ] metal ion‐doped carbon, [ 64 ] and carbon‐based hybrid composites. [ 65–67 ]…”

Section: Stmmentioning

confidence: 99%

“…2D porous carbon is a promising electrode material in electrochemical devices due to the short diffusion distance and good electrolyte accessibility. [ 50,62 ] Graphene oxide has been widely used as the template to construct 2D porous carbon nanosheets. [ 71 ] From the perspective of cost, salt as template to produce 2D porous carbon is a better choice.…”

Section: Stmmentioning

confidence: 99%

See 3 more Smart Citations

Salt‐Assisted Synthesis of 2D Materials

Huang

Jin

et al. 2020

Adv Funct Materials

136

112

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2D materials have demonstrated good chemical, optical, electrical, and magnetic characteristics, and offer great potential in numerous applications. Corresponding synthesis technologies of 2D materials that are highquality, high-yield, low-cost, and time-saving are highly desired. Salt-assisted methods are emerging technologies that can meet these requirements for the fabrication of 2D materials. Herein, the recent process for the salt-assisted synthesis of 2D materials and their typical applications are summarized. First, the properties of salt crystals and molten salts are briefly introduced, and then some examples of 2D materials synthesis with the assistance of salt as well as their representative applications are presented. The underlying mechanisms of salts with different states on the formation of 2D morphology are discussed to aid in the rational design of synthetic route of 2D materials. At last, the challenges and future perspectives for salt-assisted methods are briefly described. This review provides guidance for the controllable synthesis of 2D materials based on the salt-assisted approaches.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201908486.MoO 3 , and LaNb 2 O 7 ), [14][15][16] layered double hydroxides (LDHs, e.g., Mg 6 Al 2 (OH) 16 CO 3 •4H 2 O), [17] hexagonal-boron nitride (h-BN), [2,18] transition metal halides (such as MoCl 2 and CrCl 3 ), [19] black phosphorus, [20] graphitic carbon nitride (g-C 3 N 4 ), [5] MXene (such as Ti 2 C and Ti 3 CN), [21][22][23][24][25] and clays (for instance, [(Mg 3 )(Si 2 O 5 ) 2 (OH) 2 ] and [(Al 2 )(Si 3 Al) O 10 (OH) 2 ]K). [19] Notably, many nonlayered structure species can also form 2D morphology with specific synthetic methods, largely expanding the 2D family (such as hexagonal-MoO 3 (h-MoO 3 ), hexagonal-WO 3 (h-WO 3 ), [15] transition metal nitrides (TMNs), [26,27] and transition metal phosphides (TMPs)). [28] To exploit the applications of 2D materials, the development of a synthetic method should be prioritized. Currently, synthesis processes of 2D materials could be divided into two categories, naming the top-down and bottom-up approaches. [29][30][31] Generally, exfoliation is the most common top-down method to produce monolayer or few-layer 2D materials. [19,32] Graphene was first prepared by mechanical exfoliation of highly oriented pyrolytic graphite with sellotape in 2004. [33] The exfoliation can weaken the interlayer Van der Waals force for bulk materials with layered crystal structures while maintain the covalent bonding in plane to produce monolayer or few-layer nanosheets. Although the productivity based on this method is limited due to the low efficiency, the exfoliation approach provides a new synthesis methodology for 2D materials. A series of studies on liquid exfoliation have been conducted by Coleman and co-workers. [19,34,35] By sonicating the bulk material in an appropriate solvent with similar interface energy, 2D material ink can be prepared. After the liq...

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Section: Stmmentioning

confidence: 99%

Section: Stmmentioning

confidence: 99%

Section: Stmmentioning

confidence: 99%

Section: Stmmentioning

confidence: 99%

See 2 more Smart Citations

Salt‐Assisted Synthesis of 2D Materials

Huang

Jin

et al. 2020

Adv Funct Materials

136

112

View full text Add to dashboard Cite

show abstract

“…Wang et al reported that porous carbon nanosheets were synthesized by using glucose as carbon precursor and sodium chloride (NaCl) as water-soluble template. [105] In this work, the NaCl template and glucose precursor were dissolved in deionized water to obtain a homogeneous solution. After the polymerization and carbonization process, the composition formed thin carbon nanosheets on the NaCl template surface.…”

Section: Wwwadvsustainsyscommentioning

confidence: 99%

Progress of Nanostructured Electrode Materials for Supercapacitors

Jiang

Yadi

Nie

et al. 2017

Advanced Sustainable Systems

108

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Supercapacitors, as a type of energy storage system, bridge the power/energy gap between conventional capacitors and batteries due to attractive properties such as high power density, long cycle lifespan, and large temperature range. However, the low energy density of supercapacitors compared to lithium‐ion batteries has hindered their general application. In general, the electrochemical performance of supercapacitors is closely related to the structure of their electrode materials, electrolytes, and device design. The main materials used in electrochemical double‐layer capacitors (EDLCs) are carbon materials with various architectures. This is due to their high surface area, good electric conductivity, and intrinsic stability. In this review, recently reported carbon‐based nanostructured electrode materials with 0D, 1D, 2D, and 3D structures are systematically reviewed. The effect of nanostructuring on the properties of supercapacitors including specific capacitance, rate capability, and cycle stability is explored, the details of which may serve as a guide to electrode design for the next generation of EDLCs.

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Self‐Supported Earth‐Abundant Carbon‐Based Substrates in Electrocatalysis Landscape: Unleashing the Potentials Toward Paving the Way for Water Splitting and Alcohol Oxidation

Yap,

Loh,

et al. 2023

Advanced Energy Materials

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In the vast realm of scientific inquiry, the pursuit of hydrogen fuel production through electrochemical water splitting offers a promising gateway to green energy generation, alleviating the challenges posed by resource scarcity. However, conventional water splitting encounters hurdles like low efficiency and the sluggish oxygen evolution reaction (OER), which prompt searchers to seek for alternative oxidation process. Significant strides are made in conventional electrocatalytic research employing polymeric binders, resulting in commendable catalytic activity and minimal electron migration resistance. Yet, a pivotal breakthrough in this rapidly evolving field lies in the innovative conception of carbon‐based self‐supported electrocatalysts, heralding a promising trajectory ahead. This review delves into the essential electro‐activity parameters to establish the property‐activity nexus, emphasizing the benefits of self‐supported carbon‐based electrodes. Noteworthy advancements are demonstrated in electrochemical hydrogen evolution reaction (HER), OER, overall water splitting (OWS), and bifunctional HER and alcohol oxidation reaction (AOR), driven by a diverse range of self‐supported electrocatalysts. These include structure‐dependent materials such as metal oxides, hydroxides/oxyhydroxides, phosphides, sulfides, selenides, nitrides, and carbides, each meticulously tailored with nuanced modifications that shape their distinctive attributes. This field also acknowledges its challenges and opportunities, providing guidance for potential research directions and inspiring interdisciplinary collaboration among scientists.

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Large-scale synthesis of highly porous carbon nanosheets for supercapacitor electrodes

Cited by 69 publications

References 43 publications

Salt‐Assisted Synthesis of 2D Materials

Salt‐Assisted Synthesis of 2D Materials

Progress of Nanostructured Electrode Materials for Supercapacitors

Self‐Supported Earth‐Abundant Carbon‐Based Substrates in Electrocatalysis Landscape: Unleashing the Potentials Toward Paving the Way for Water Splitting and Alcohol Oxidation

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