Zinc-salt templating of hierarchical porous carbons for low electrolyte high energy lithium-sulfur batteries (LE-LiS)

Strubel, Patrick; Althues, Holger; Kaskel, Stefan

doi:10.1016/j.carbon.2016.06.075

Cited by 28 publications

(26 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From previous studies, we know that a high specific surface area in combination with a high pore volume is needed in DME/DOL‐based polysulfide‐dissolving standard electrolyte. The specific surface area enables electron transfer to the sulfur molecules . The free pore volume acts as sulfur and electrolyte reservoirs.…”

Section: Resultsmentioning

confidence: 99%

“…The specific surface area enables electron transfer to the sulfur molecules. [78,79] The free pore volumea cts as sulfur and electrolyte reservoirs. We emphasize the electrochemical results of LUPC/S and WWUPC/ Sc omposites owing to their comparable porosity,s ulfur loadings, and relatively high electrode densities.…”

Section: Electrochemical Performance Of Li-s Cathodesmentioning

confidence: 99%

See 1 more Smart Citation

Nitrogen‐Doped Biomass‐Derived Carbon Formed by Mechanochemical Synthesis for Lithium–Sulfur Batteries

et al. 2018

Self Cite

View full text Add to dashboard Cite

Nitrogen‐doped carbons were synthesized by a solvent‐free mechanochemically induced one‐pot synthesis by using renewable biomass waste. Three solid materials are used: sawdust as a carbon source, urea and/or melamine as a nitrogen source, and potassium carbonate as an activation agent. The resulting nitrogen‐doped porous carbons offer a very high specific surface area of up to 3000 m2 g−1 and a large pore volume up to 2 cm3 g−1. Also, a high nitrogen content of 4 wt % (urea only) up to 12 wt % (melamine only) is generated, depending on the nitrogen and carbon sources. The mechanochemical reaction and the impact of different wood components on the porosity and surface functionalities are investigated by nitrogen physisorption and high‐resolution X‐ray photoelectron spectroscopy (XPS). These N‐doped carbons are highly suitable as cathode materials for Li–S batteries, showing high initial discharge capacities of up to 1300 mAh gsulfur−1 (95 % coulombic efficiency) and >75 % capacity retention within the first 50 cycles at low electrolyte volume.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Performance Of Li-s Cathodesmentioning

confidence: 99%

Nitrogen‐Doped Biomass‐Derived Carbon Formed by Mechanochemical Synthesis for Lithium–Sulfur Batteries

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…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%

Salt‐Assisted Synthesis of 2D Materials

Huang

Jin

et al. 2020

Adv Funct Materials

136

112

View full text Add to dashboard Cite

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...

show abstract

“…In detail, we apply the Pechini method, an approach commonly used for the synthesis of uniform metal oxide nanoparticles to synthesize a titanium(IV) citrate-based polymer [ 44 – 45 ]. The Pechini method is applicable to synthesize templated mesoporous carbons [ 46 – 49 ], but has never been utilized for a solvent-free and rapid process based on mechanochemistry.…”

Section: Introductionmentioning

confidence: 99%

Mechanochemistry-assisted synthesis of hierarchical porous carbons applied as supercapacitors

Leistenschneider

Jäckel

Hippauf

et al. 2017

Beilstein J. Org. Chem.

View full text Add to dashboard Cite

A solvent-free synthesis of hierarchical porous carbons is conducted by a facile and fast mechanochemical reaction in a ball mill. By means of a mechanochemical ball-milling approach, we obtained titanium(IV) citrate-based polymers, which have been processed via high temperature chlorine treatment to hierarchical porous carbons with a high specific surface area of up to 1814 m2 g−1 and well-defined pore structures. The carbons are applied as electrode materials in electric double-layer capacitors showing high specific capacitances with 98 F g−1 in organic and 138 F g−1 in an ionic liquid electrolyte as well as good rate capabilities, maintaining 87% of the initial capacitance with 1 M TEA-BF4 in acetonitrile (ACN) and 81% at 10 A g−1 in EMIM-BF4.

show abstract

Zinc-salt templating of hierarchical porous carbons for low electrolyte high energy lithium-sulfur batteries (LE-LiS)

Cited by 28 publications

References 44 publications

Nitrogen‐Doped Biomass‐Derived Carbon Formed by Mechanochemical Synthesis for Lithium–Sulfur Batteries

Nitrogen‐Doped Biomass‐Derived Carbon Formed by Mechanochemical Synthesis for Lithium–Sulfur Batteries

Salt‐Assisted Synthesis of 2D Materials

Mechanochemistry-assisted synthesis of hierarchical porous carbons applied as supercapacitors

Contact Info

Product

Resources

About