Perforated two-dimensional nanoarchitectures for next-generation batteries: Recent advances and extensible perspectives

Nazarian-Samani, Masoud; Haghighat-Shishavan, Safa; Nazarian-Samani, Mahboobeh; Kashani-Bozorg, Seyed Farshid; Ramakrishna, Seeram; Kim, Kwang Bum

doi:10.1016/j.pmatsci.2020.100716

“…However, the strong coordination ability of MA with POMs leads to uncontrollable assembly and form irregular complex [44] . Our previous studies demonstrated that the interaction of oxygen‐containing groups and amine groups have played an important role in tuning the morphology and micro‐structure of nanomaterials [45, 46] . So, a proper agent with oxygen‐containing groups should be selected to combine with MA in advance, realizing the regulation on the subsequent assembly of POMs with MA.…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

Gu

¹

,

Wu

²

,

Jiao

³

et al. 2021

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Herein, we present a new strategy for the synthesis of 2D porous MoP/Mo2N heterojunction nanosheets based on the pyrolysis of 2D [PMo12O40]3−‐melamine (PMo12‐MA) nanosheet precursor from a polyethylene glycol (PEG)‐mediated assembly route. The heterostructure nanosheets are ca. 20 nm thick and have plentiful pores (<5 nm). These structure features offer advantages to promote the HER activity, including the favorable water dissociation kinetics around heterojunction as confirmed by theoretical calculations, large accessible surface of 2D nanosheets, and enhanced mass‐transport ability by pores. Consequently, the 2D porous MoP/Mo2N heterojunction nanosheets exhibit excellent HER activity with low overpotentials of 89, 91 and 89 mV to achieve a current density of 10 mA cm−2 in alkaline, neutral and acidic electrolytes, respectively. The HER performance is superior to the commercial Pt/C at a current density >55 mA cm−2 in neutral medium and >190 mA cm−2 in alkaline medium.

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“…Transition metal selenides have attracted much attention due to their high specific capacities and suitable working potentials, along with abundant reserves and good thermal stability. [1,2] significance for obtaining corresponding high-performance anode materials. As a consequence, it is urgent to take various strategies to not only promote charge migration and cyclic stability, but also make the Li/Na/K storage differences of ZnSe more pronounced.…”

Section: Introductionmentioning

confidence: 99%

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na⁺ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries

Li

¹

,

Han

²

,

Yang

³

et al. 2021

Adv Funct Materials

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Transition metal selenides have been widely used in alkali metal ion batteries owing to their high specific capacities and low cost. However, their reaction kinetics and structural stability are usually poor during cycling, along with ambiguous differences in Li/Na/K-storage behaviors. Herein, it is revealed that ZnSe possesses better Na + -diffusion kinetics (including lower diffusion barrier, smaller activation energy, and higher diffusion coefficients) in comparison with Li + and K + , as evidenced by theoretical calculations and electrochemical studies. The architectural designs of ZnSe-based anode, including nitrogen-doped carbon (N,C) and 3D ordered hierarchical pores (3DOHP) to form a 3DOHP ZnSe@N,C hybrid combined with regulating solid electrolyte interphase (SEI), significantly enhance Na + reaction kinetics and accommodate volume changes. The resulting 3DOHP ZnSe@N,C electrodes exhibit outstanding rate capability and good cycling stability (241.6 mAh g −1 in sodium-ion batteries (SIBs) at 10 A g −1 after 800 cycles), originating from improved electrical conductivity and shortened ion diffusion paths, accompanied by ultrathin and stable SEI with less Na 2 CO 3 /NaF in organic components and boosted Na 2 Se adsorption as sodiation. Moreover, the Na-storage mechanism in 3DOHP ZnSe@N,C hybrid is further revealed by in situ studies. Accordingly, this study provides a new perspective for designing high-performance electrode materials for SIBs.

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“…[44] Our previous studies demonstrated that the interaction of oxygen-containing groups and amine groups have played an important role in tuning the morphology and micro-structure of nanomaterials. [45,46] So,aproper agent with oxygen-containing groups should be selected to combine with MA in advance,realizing the regulation on the subsequent assembly of POMs with MA. Thep olyethylene glycol, bearing plentiful functional unity (-OH, and -O-), can form al ong-chain structure in water, thus being promising candidate as am ediator.T he theoretical calculation shows that the PEG-4000 can interact with MA through hydrogen bonds,t hus inducing the arrangement of MA along 2D direction (Supporting Information, Figure S1).…”

Section: Introductionmentioning

confidence: 99%

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

Gu

¹

,

Wu

²

,

Jiao

³

et al. 2021

View full text Add to dashboard Cite

Herein, we present a new strategy for the synthesis of 2D porous MoP/Mo2N heterojunction nanosheets based on the pyrolysis of 2D [PMo12O40]3−‐melamine (PMo12‐MA) nanosheet precursor from a polyethylene glycol (PEG)‐mediated assembly route. The heterostructure nanosheets are ca. 20 nm thick and have plentiful pores (<5 nm). These structure features offer advantages to promote the HER activity, including the favorable water dissociation kinetics around heterojunction as confirmed by theoretical calculations, large accessible surface of 2D nanosheets, and enhanced mass‐transport ability by pores. Consequently, the 2D porous MoP/Mo2N heterojunction nanosheets exhibit excellent HER activity with low overpotentials of 89, 91 and 89 mV to achieve a current density of 10 mA cm−2 in alkaline, neutral and acidic electrolytes, respectively. The HER performance is superior to the commercial Pt/C at a current density >55 mA cm−2 in neutral medium and >190 mA cm−2 in alkaline medium.

show abstract

Perforated two-dimensional nanoarchitectures for next-generation batteries: Recent advances and extensible perspectives

Cited by 40 publications

References 719 publications

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na⁺ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

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Perforated two-dimensional nanoarchitectures for next-generation batteries: Recent advances and extensible perspectives

Cited by 40 publications

References 719 publications

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na+ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries

Two‐Dimensional Porous Molybdenum Phosphide/Nitride Heterojunction Nanosheets for pH‐Universal Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na⁺ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries