Plasma engraved Bi2MoO6 nanosheet arrays towards high performance supercapacitor and oxygen evolution reaction

Ma, Ting; Jin, Shengming; Kong, Xiaodong; Lv, Miao; Wang, Hui; Luo, Xinyuan; Tan, Hengfeng; Zhang, Ying; Chang, Xinghua; Song, Xiaolan

doi:10.1016/j.apsusc.2021.149244

Cited by 17 publications

(10 citation statements)

References 57 publications

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“…In the work of Lin et al, NiCo 2 O 4 nanosheets are etched by the Ar plasma to form abundant O vacancies and porous and discontinuous edges, which enhance active sites and boost the catalytic kinetics in overall water splitting 122 . Ma et al have engraved Bi 2 MoO 6 nanosheets with the NH 3 /Ar plasma to regulate O vacancy formation and N atom injection 123 . The O defects and N dopants in Bi 2 MoO 6 modulate the band structure to improve the conductivity, wettability, capability for ionic infiltration, and surface adsorbate dissociation barrier.…”

Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

“…Liu et al have adopted N 2 plasma etching to create abundant and uniformly distributed defect/vacancy sites on the parallelaligned NiMoO 4 array surfaces, followed by filling of these atomic defects with Fe/Pt heteroatoms to obtain high electrocatalytic activity. 119 The O vacancies in Co 123 The O defects and N dopants in Bi 2 MoO 6 modulate the band structure to improve the conductivity, wettability, capability for ionic infiltration, and surface adsorbate dissociation barrier. Wang et al have employed plasma engineering to enhance the surface activity of MnO 2 nanosheets by doping P and Fe besides introducing vacancies into the surface.…”

Section: D Defectsmentioning

confidence: 99%

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Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Luo

Huang

et al. 2022

EcoMat

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Carbon dioxide generated by the combustion of fossil fuels exacerbates global environmental problems and hydrogen produced by renewable energy is a viable alternative in the continuous transition to sustainable and eco‐conscience development. Electrocatalysts are vital to electrocatalytic reactions and plasma surface modification is one of the promising techniques to modify nanoscale electrocatalysts for water splitting. Up to now, a comprehensive review on the latest developments, challenges, and opportunities of plasma‐tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells is lacking. This paper systematically summarizes the current status of hydrogen production and fuel cell technologies, plasma principles and advantages, plasma‐tailored defective electrocatalysts from the perspective of water splitting and fuel cell applications, advanced characterization of defects, relationship between materials structure and catalytic activity of electrocatalysts, and finally challenges, opportunities, and future roadmap of plasma technologies. This review serves as a reference for future development of hydrogen technologies and offers insights into the structural tailoring of catalytic materials.

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Section: Recent Advances Of Plasma‐modified Electrocatalystsmentioning

confidence: 99%

Section: D Defectsmentioning

confidence: 99%

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Luo

Huang

et al. 2022

EcoMat

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“…Other oxygen‐deficient MOs including Co 3 O 4 , [ 131 ] α‐Fe 2 O 3 , [ 132 ] BiVO 4 /TiO 2 , [ 133 ] SnO 2 , [ 134 ] MnCo 2 O 4 , [ 135 ] SnTiO, [ 136 ] NiCo 2 O 4 , [ 137 ] LaCoO 3 , [ 138 ] MnO 2 , [ 139 ] and Bi 2 MoO 6 , [ 140 ] can also be produced by plasma treatment.…”

Section: Synthetic Approaches Of Oxygen‐deficient Mosmentioning

confidence: 99%

Oxygen‐Deficient Metal Oxides for Supercapacitive Energy Storage: From Theoretical Calculation to Structural Regulation and Utilization

Wan

Wang

et al. 2022

Adv Energy and Sustain Res

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Supercapacitors (SCs) have attracted considerable research interest because of their complementary role to dominated lithium-ion batteries (LIBs) for powering the electrified society. [1] In contrast to the bulk-involved reactions for energy storage in LIBs, SCs mainly store charges in the electric double layers (EDLs) via electrostatic adsorption where highly porous and conductive materials, for example, activated carbons, are needed. [2] This storage mechanism allows SCs to exhibit excellent rate capability, long cyclic life, and high safety; therefore, it is indispensable in many fields. [3] However, despite these advantages, the limited charge storage space within electrode materials considerably restricts the energy density of SCs. To overcome this limitation, tremendous efforts have been devoted to the search for electrode materials that employ alternative charge-storage mechanisms that can improve energy storage. [4] Some metal oxides (MOs) can afford extremely fast surface redox reactions which compare favorably with those of electrostatic charge adsorption at the EDLs. Although these processes are faradaic in nature, they show an excellent rate capability that is similar to that of the EDL charge storage in the porous carbon electrodes of current SCs. Then, these MOs are defined as pseudocapacitive materials, and they can improve the energy density of current SCs. [5] The theoretical capacitance of the MO-based electrodes can be calculated using Equation (1) [6] Cwhere n, F, M, and V represent the number of transferred electrons, Faraday constant (C mol À1 ), the molar mass of the MOs (g mol À1 ), and operating voltage window (V), respectively. The specific capacitance of the typical MO electrode materials is summarized in Table 1.The MOs should have suitable electronic structures, desired electrical conductivity, and sufficient active sites to facilitate surface redox reactions. To this end, tremendous progress has been realized via research efforts in recent decades. [7] Heteroatomdoping has been widely used to engineer electronic structures. [8] Zeng et al. [9] synthesized a Ti-doped Fe 2 O 3 @poly

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“…In the past few decades, the gradual depletion of fossil fuels and the pollution environment problems associated with greenhouse gas emissions, alternative energy storage, and conversion of wearable and sustainable devices that causes to develop renewable environmentally friendly methods, relatively cost-effective, and applicable to energy improvement and storage has gained significant attention. − Supercapacitors for their good cycle stability, high power density, and fast charging speed are some of the most promising candidates that have been considered in the realm of energy storage devices. , As an important part of wearable devices, new flexible supercapacitors have attracted more and more attention, for energy storage and functional requirements. , As one of the high potential candidate’s energy storage devices and high-power components for portable functional integrated electronics, flexible supercapacitors should have an amazing power density, swift charging and discharging rates, robust thermal operating range, and longer cycle life than batteries, and they are a better replacement. − Characteristics of the electrode materials and the electrolytes are the most important factors involved in the performance of supercapacitors, including their energy density, which are improved by increasing the specific capacitance and working voltage . The working voltage of organic electrolytes compared to aqueous counterparts is much higher; however, due to the high ionic conductivity of aqueous electrolytes, they show a higher specific capacitance and they are safe, environmentally friendly, and low cost .…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Fe₂O₃/Na₂WO₄ Nanofibers Supported on Conductive Carbon Cloth as a High-Performance Supercapacitor

et al. 2021

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Nanofibrous single metal oxides are promising electrode agents for electrochemical supercapacitors (ESCs). However, their cycling stability, capacitance, and rate efficiency still are required to be promoted for practical applications. To boost electrochemical supercapacitor (ESC) performance, it is critical to progressively develop a desirable morphology and high-surface-area electrode material as well as to design preferable electrode architecture. Therefore, we fabricated the α-Fe2O3/Na2WO4 nanofibers (NFs) by one-step coaxial syringe electrospinning of PVP-Fe(NO3)3 and PVP/Na2WO4 followed by the calcination of the product. Polyvinylidene fluoride/N-methyl-2-pyrrolidone solution containing different amounts of as-prepared α-Fe2O3/Na2WO4 NFs with excellent processability and tolerability is prepared followed by casting on conductive carbon cloth (CC) as a distinguished electrode material, which satisfactorily reveals a specific capacitance up to 265.54 F g–1 between −0.8 and 0.8 V vs Ag/AgCl. The Cottrell and Dunn equations were applied to obtain 75.6% capacitive (non-faradaic) and 24.4% diffusion intercalation (faradaic) current. The coin-cell-based symmetric structured ESC assembled by two segments of CC-Fe2O3/Na2WO4 NF electrodes achieved 1.6 V operating voltage in 3.0 M Na2SO4 aqueous electrolyte and a specific capacitance of 160 F g–1 with superficial cycling stability, with 93% of initial capacitance retained after 200 cycles, revealing rapid ion-captive redox reactions on Fe2O3/Na2WO4 NF surfaces. The CC-Fe2O3/Na2WO4 NF symmetric ESC can carry an energy density of 50 Wh kg–1 at a power density of 514.28 W g–1. Our founding confirms that the CC-Fe2O3/Na2WO4 NF composite can act as a promising ideal electrode material for high-performance symmetric ESCs.

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Plasma engraved Bi2MoO6 nanosheet arrays towards high performance supercapacitor and oxygen evolution reaction

Cited by 17 publications

References 57 publications

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Oxygen‐Deficient Metal Oxides for Supercapacitive Energy Storage: From Theoretical Calculation to Structural Regulation and Utilization

Hierarchical Fe₂O₃/Na₂WO₄ Nanofibers Supported on Conductive Carbon Cloth as a High-Performance Supercapacitor

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Plasma engraved Bi2MoO6 nanosheet arrays towards high performance supercapacitor and oxygen evolution reaction

Cited by 17 publications

References 57 publications

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Plasma modified and tailored defective electrocatalysts for water electrolysis and hydrogen fuel cells

Oxygen‐Deficient Metal Oxides for Supercapacitive Energy Storage: From Theoretical Calculation to Structural Regulation and Utilization

Hierarchical Fe2O3/Na2WO4 Nanofibers Supported on Conductive Carbon Cloth as a High-Performance Supercapacitor

Contact Info

Product

Resources

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Hierarchical Fe₂O₃/Na₂WO₄ Nanofibers Supported on Conductive Carbon Cloth as a High-Performance Supercapacitor