Inclusion of Poly(tetramethyl-p-phenyl- enediamine dihydrochloride) into MoO3:  A Cooperative Formation Route to Construct a Polymer/MoO3 Layered Structure

Shao, Kang; Ma, Ying; Ya-An, Cao; Chen, Zhaohui; Xue-hai, and Ji; Yao, Jiannian

doi:10.1021/cm000519u

Cited by 27 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Molybdenum bronze, a long-known mixed-valent metal oxide colored material, was first reported by Alfred Stavenhagen and E. Engels in 1895 and is nothing but a hydronium- or hydrated-alkali-metal-cation-inserted MoO 3 compound. − Even though the literature of MoO 3 is vast for MoO 3 intercalations, − we did not come across any MoO 3 material intercalated with a transition metal–aqua coordination complex. In the present work, we could synthesize a hitherto unknown α-MoO 3 -intercalated {Ni(H 2 O) 6 } 2+ compound, [Mo VI 2 O 6 (CH 3 COO){Ni II (H 2 O) 6 } 0.5 ]·H 2 O ( 1 ), in a simple one-pot wet synthesis and characterize this composite by single-crystal X-ray crystallography.…”

mentioning

confidence: 66%

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

2022

View full text Add to dashboard Cite

We have successfully intercalated {NiII(H2O)6}2+ into the α-MoO3 layer, leading to the isolation of green single crystals of [MoVI 2O6(CH3COO){NiII(H2O)6}0.5]·H2O (1). The homogeneous electrochemistry of 1 in its aqueous solution exhibits electrocatalytic hydrogen evolution reaction (HER) with concomitant electrochemical deposition of [HMo3 VIMoVO12(CH3COO){NiII(H2O)5(OH)}] (2). Compound 2, a new molybdenum bronze, acts as an efficient and stable heterogeneous electrocatalyst for water reduction to molecular hydrogen. This work represents the first paradigm of a molybdenum bronze intercalating a transition metal–aqua ion.

show abstract

mentioning

confidence: 66%

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

2022

View full text Add to dashboard Cite

show abstract

“…The stoichiometry is similar with reported (polymer) x MoO 3 hybrids, such as (polyaniline) 0.24 MoO 3 [ 22 ] and [poly(tetramethyl‐p‐phenylenediamine dihydrochloride)] 0.23 MoO 3 . [ 23 ] Thus, it can be concluded that the sample PEDOT‐MoO 3 is composed of Mo‐O layered sheets, a monolayer of PEDOT chains, and H 2 O molecules within the MoO 3 interlamellar spacings.…”

Section: Resultsmentioning

confidence: 99%

Systematic Modification of MoO₃‐Based Cathode by the Intercalation Engineering for High‐Performance Aqueous Zinc‐Ion Batteries

Fang

Liu

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Aqueous Zn-ion batteries are attracting extensive attention, but their largescale application is prevented by the poor electrochemical kinetics and terrible lifespan. Herein, a strategy of introducing the conductive poly(3,4ethylenedioxythiophene) (PEDOT) into the interlayers of α-MoO 3 is reported to systematically overcome the above shortcomings. Through data analyses of the cyclic coltammetry, electrochemical impedance spectroscopy, and galvanostatic intermittent titration technique, the electrochemical kinetics of the PEDOT-intercalated MoO 3 (PEDOT-MoO 3 ) is proved to be significantly improved. The first-principles calculations microscopically disclose that the changed energy band and the lowered binding energy between Zn 2+ and host O 2− boost electrochemical kinetics of PEDOT-MoO 3 . Meanwhile, its decreased hydrophilicity and the suppressed dissolution of molybdenum stabilizes the repeated cycling processes. Interestingly, it is found that excellent electrochemical kinetics of cathode electrode can restrain the growth of zinc dendrite on the Zn anode, prolonging the lifespan of aqueous Zn-ion batteries. As a result, the PEDOT-MoO 3 exhibits the enhanced specific capacity (341.5 vs 146.7 mAh g −1 at 0.1 A g −1 ), high rate capacity (178.2 vs 19.4 mAh g −1 at 30 A g −1 ) and prolonged cycling stability (77.6% capacity retention over 500 cycles vs 2.3% capacity retention over 100 cycles at 30 A g −1 ) compared with pristine MoO 3 . Moreover, the PEDOT-MoO 3 as cathode of quasi-solidstate ZIBs also delivers an impressive electrochemical performance.

show abstract

“…The intercalation science of layered molybdenum trioxide (α-MoO 3 ) opens an exciting field for tuning their structural, physical, and chemical properties. Diverse guest species, including organic and inorganic materials, have been intercalated into these layers, resulting in “intercalated MoO 3 ” materials. − Above all, the intercalation of alkali ions into layered MoO 3 has been strongly documented and widely used as efficient energy storage and electrochemical systems . Interestingly, the intercalation of any proton or alkali ion into layered MoO 3 leads to the formation of reduced molybdenum trioxide (MoO 3– x ), so-called molybdenum bronze (shiny and lustrous material). − Being versatile structures with a wide range of physical and chemical properties, MoO 3 gains enormous attention for its application as optical, electronic, catalytic, bio, and energy materials .…”

Section: Introductionmentioning

confidence: 99%

Co(OH)₂ Intercalated in MoO₃ by Molecular Electrodeposition Resulting in a Conductive Material: A Molybdenum Bronze for Efficient Electrocatalytic Hydrogen Evolution

2023

View full text Add to dashboard Cite

Today, in modern material research, molybdenum trioxide (MoO 3 ), a versatile and smart metal oxide, is placed as one of the topmost advanced materials as far as its publication record goes. Specially, the intercalation science of MoO 3 , intercalating any organic and inorganic species into its lamellar space, has a huge impact not only in materials chemistry but also in overall chemical science. This is because such host−guest materials have enormous potential toward electrocatalysis. Surprisingly, the transition-metal-aqua complex intercalated in MoO 3 was not known until we had reported recently (as a communication) by characterizing it using single-crystal X-ray crystallography, even though the applications of transition metals are unbeatable in any field of research. In this work, we have successfully intercalated {Co II (H 2 O) 6 } 2+ into α-MoO 3 layers, leading to the isolation of pink-colored water-soluble crystals of [Mo 2 VI O 6 (CH 3 COO){Co II (H 2 O) 6 } 0.5 ]•H 2 O (1), synthesized in a one-step aqueous-green synthesis and characterized by single-crystal X-ray crystallography. The homogeneous electrochemistry of compound 1 in its acidic aqueous solution results in the concomitant electrochemical deposition of Co(OH) 2 @MoO 3−x (2). Compound 2, representing a new class of molybdenum bronzes, intercalates β-Co(OH) 2 into the α-MoO 3 layers. The bronze-like properties of compound 2 have been validated by measuring its electrical conductivity values. Compound 2 exhibits a modest electrical conductivity of 1.41 × 10 −5 S cm −1 and a low activation energy (Ea) value of 390 meV at 25 °C. The electrical conductivity of compound 2 increases with increasing temperature. A conductive material is known to be a good electrocatalyst. Compound 2 acts as an efficient heterogeneous electrocatalyst for hydrogen evolution reaction (HER) at a low overpotential of 168 mV to achieve 10 mA cm −2 current density with a Tafel slope value of 98 mV dec −1 . The catalytic performance of compound 2 is demonstrated by its long-term electrolysis stability for 10 h with its Faradic efficiency of 91%.

show abstract

Inclusion of Poly(tetramethyl-p-phenyl- enediamine dihydrochloride) into MoO₃: A Cooperative Formation Route to Construct a Polymer/MoO₃ Layered Structure

Cited by 27 publications

References 14 publications

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Systematic Modification of MoO₃‐Based Cathode by the Intercalation Engineering for High‐Performance Aqueous Zinc‐Ion Batteries

Co(OH)₂ Intercalated in MoO₃ by Molecular Electrodeposition Resulting in a Conductive Material: A Molybdenum Bronze for Efficient Electrocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About

Inclusion of Poly(tetramethyl-p-phenyl- enediamine dihydrochloride) into MoO3: A Cooperative Formation Route to Construct a Polymer/MoO3 Layered Structure

Cited by 27 publications

References 14 publications

Single Crystals of α-MoO3-Intercalated {Ni(H2O)6}2+ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Single Crystals of α-MoO3-Intercalated {Ni(H2O)6}2+ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Systematic Modification of MoO3‐Based Cathode by the Intercalation Engineering for High‐Performance Aqueous Zinc‐Ion Batteries

Co(OH)2 Intercalated in MoO3 by Molecular Electrodeposition Resulting in a Conductive Material: A Molybdenum Bronze for Efficient Electrocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About

Inclusion of Poly(tetramethyl-p-phenyl- enediamine dihydrochloride) into MoO₃: A Cooperative Formation Route to Construct a Polymer/MoO₃ Layered Structure

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Single Crystals of α-MoO₃-Intercalated {Ni(H₂O)₆}²⁺ and Electrocatalytic Water Reduction: Toward a Class of Molybdenum Bronzes

Systematic Modification of MoO₃‐Based Cathode by the Intercalation Engineering for High‐Performance Aqueous Zinc‐Ion Batteries

Co(OH)₂ Intercalated in MoO₃ by Molecular Electrodeposition Resulting in a Conductive Material: A Molybdenum Bronze for Efficient Electrocatalytic Hydrogen Evolution