Carbon-Coated Three-Dimensional MXene/Iron Selenide Ball
Two-dimensional (2D) MXenes are promising as electrode materials for energy storage, owing to their high electronic conductivity and low diffusion barrier. Unfortunately, similar to most 2D materials, MXene nanosheets easily restack during the electrode preparation, which degrades the electrochemical performance of MXene-based
Improved Sodium-Ion Storage Performance of Ultrasmall Iron Selenide
Iron selenide nanoparticles-encapsulated within bamboo-like N-doped carbon nanotubes as composite anodes for superior lithium and sodium-ion storage. Boosting energy and power performance of aqueous energy storage by engineering ultra-fine metallic VSe2 nanoparticles anchored reduced graphene oxide. Journal of Power
Iron-selenide-based titanium dioxide nanocomposites as a novel
This study portrays a facile wet-chemical synthesis of FeSe 2 /TiO 2 nanocomposites for the first time for advanced asymmetric supercapacitor (SC) energy storage applications. Two different composites were prepared with varying ratios of TiO 2 (90 and 60%, symbolized as KT-1 and KT-2) and their electrochemical properties were investigated to obtain an
Two‐dimensional Amorphous Iron Selenide Sulfide
Here, it is proposed to apply 2D amorphous iron selenide sulfide. nanosheets (a-FeSeS NSs) as an anode material for SIBs and demonstrate. that they exhibit remarkable rate capability of 528.7 mAh
Hierarchical iron selenide nanoarchitecture as an advanced anode
Herein, we report submicron-sized flower-like iron selenide (FeSe 2, FS) nanostructure facilely prepared using a KCl-templated solvothermal technique followed by calcination treatment under an inert atmosphere.As an anode material in lithium ion batteries (LIBs), the as-prepared flower-like FS nanostructure exhibits a specific discharge/charge
Spatially dual-confined metallic selenide double active centers for
Herein, a multi-interface engineered iron-nickel bimetallic selenide (NiSe 2 /FeSe 2, NFS) space-confined in a dual-carbon structure is designed as an efficient anode for PIBs. The NFS heterostructure with different band structures endows a built-in electric field, which facilitates fast interfacial electron transport and reduced ionic
Iron selenide nanoparticles-encapsulated within bamboo-like N
Iron selenide nanoparticles-encapsulated within bamboo-like N-doped carbon nanotubes as composite anodes for superior lithium and sodium-ion storage. The energy storage mechanism and reaction pathways of FeSe 2 @CNTs composite were simultaneously studied by the in situ electrochemical techniques and DFT calculations.
Research progress and future aspects: Metal selenides as effective
1. Introduction. The energy deficiency and ever-increasing environmental pollutions encouraged researchers over the globe to explore sustainable energy storage/conversion devices [1, 2].With rapid improvement in this field, numerous clean and green energy devices have been constructed [2, 3], such as, lithium ion batteries (LIBs)
In-situ construction of vacancies and schottky junctions in nickel-iron
The exploration of suitable anode materials to overcome key issues of electrode volume fluctuation and sluggish electronic/ionic transport dynamics caused by the large radius of sodium/potassium ions is an urgent need for energy storage. Herein, a heterogenetic nickel-iron selenide containing vacancies and schottky junctions within N
All ternary metal selenide nanostructures for high energy flexible
1. Introduction. Serious environmental pollution and the exploitation of fossil fuels have resulted in an urgent need for advanced energy storage systems based on renewable and green energy resources, which is one of the emerging natural concerns in modern society [[1], [2], [3]].As one of the advanced energy storage systems,
Iron Selenide‐Based Heterojunction
The porous composite possesses enriched active sites and facilitates transport for both ion and electron. Ni-doping is adopted to enrich the lattice defects and
Boosting fast and stable potassium storage of iron selenide
Introduction. The blooming development of electric vehicles and large-scale energy storage devices demands for high-performance and low-cost energy storage technologies; however, the large-scale application of advanced lithium-ion batteries (LIBs) are seriously hindered due to the limited reserve, high cost and uneven distribution of
Combined electrochemical and DFT investigations of iron selenide
The developed bendable solid-state supercapacitor reveals a remarkable power density of 5.1 kW kg −1 with outstanding deformation tolerance, including its use in a practical demo to run a small fan, demonstrating its capability for advanced energy storage applications. A complementary first-principles density functional theory (DFT) approach
Aerosol-assisted synthesis of 3D hybridized reduced
The bimetallic cobalt-iron nanocrystals enveloped in graphitic carbon were subsequently transformed into cobalt-iron selenide through a straightforward selenization process, enhancing its potential for potassium-ion storage. The resulting cobalt-iron selenide-rGO-CNT composite anode exhibited exceptional capacity and remarkable
Enhancing the long-term Na-storage cyclability of conversion-type iron
Electrochemical conversion reactions provide more selections for Na-storage materials, but the reaction suffers from low reversibility and poor cyclability. Introducing an electrochemically inactive component is a common strategy, but the effect is quite limited since it could not stabilize the structure during long-term cycling. In this
High energy storage quasi-solid-state supercapacitor enabled
1. Introduction. Growing demands for energy globally and rising environmental pollution have led to the depletion of non-renewable fossil fuels. To preserve the environmental pollution and generated greenhouse effect, a firm must instantly probe the sustainable renewable energy resources with no environmental impacts [1], [2] the
1D to 3D hierarchical iron selenide hollow nanocubes assembled from
The demand for large-scale energy storage has increasingly desired due to the shortage of natural fossil fuel and the urgent demand for renewable energy resources [1]. Various electrochemical energy conversion technologies such as supercapacitor, lithium ions batteries, lithium sulfur batteries and metal air batteries have been developed to
Ultrafast and durable Li/Na storage by an iron selenide anode
Ultrafast and durable Li/Na storage by an iron selenide anode using an elastic hierarchical structure a Department of Advanced Energy Materials, College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China E-mail: wangqian1215@scu .cn. b Engineering Research
Iron Selenide-Based Heterojunction Construction and Defect
Iron Selenide-Based Heterojunction Construction and Defect Engineering for Fast Potassium/Sodium-Ion Storage Small. 2022 Apr;18 (15 2 Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage & Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Shandong, 252000, China.
Improved Sodium-Ion Storage Performance of Ultrasmall Iron
In this work, we demonstrated that ultrasmall (∼5 nm) iron selenide (FeSe 2) nanoparticles exhibited a remarkable activity for sodium-ion storage. They were
Iron Selenide‐Based Heterojunction Construction and
Iron Selenide-Based Heterojunction Construction and Defect Engineering for Fast Potassium/Sodium-Ion Storage Zhen Kong, Lu Wang, Sikandar Iqbal, Bo Zhang, Bin Wang, Jianmin Dou, Fengbo Wang,
Structural Stability Boosted in 3D Carbon‐Free Iron Selenide
Herein, a 3D carbon-free iron selenide electrode is designed by heterointerface with Se P bond engineering strategy to realize outstanding Na +-storage performance. Theoretical calculations on the stress deformation confirm the construction of Fe 7 Se 8 /Fe 3 (PO 4 ) 2 not only enables excellent resistance-to-deformation ability but
Carbon-Coated Three-Dimensional MXene/Iron Selenide Ball
Combining iron selenides and carbon with 3D MXene balls offer many more sites for ion storage and enhance the structural robustness of the composite balls.
1D to 3D hierarchical iron selenide hollow nanocubes assembled
A bimetallic selenide encapsulated in nitrogen, sulfur-codoped hollow carbon nanospheres interconnected reduced graphene oxide nanosheets (rGO@MCSe) are successfully designed as advanced anode materials for Na/K-ion batteries and show excellent energy storage properties in Na/ K-ion full cells when coupled with Na3 V2 (PO4 )2 O2 F and
Boosting the sodium storage performance of iron selenides by a
1. Introduction. In recent years, lithium-ion batteries (LIBs) have been widely used in electronic devices and electric vehicles because of their high energy density, long service life and portability [1], [2], [3].Nevertheless, due to the extreme shortage and geographically uneven distribution of lithium resources, the cost of LIBs is much higher
Iron Selenide Particles for High-Performance Supercapacitors
Nowadays, iron (II) selenide (FeSe), which has been widely studied for years to unveil the high-temperature superconductivity in iron-based superconductors, is drawing increasing attention in the electrical energy storage (EES) field as a supercapacitor electrode because of its many advantages.
Iron-selenide-based titanium dioxide nanocomposites as a novel
Among these appealing compounds, iron selenide (symbolized as FeSe 2) is a p-type semiconductor with a quiet narrow bandgap energy of (1.0 eV), one of the most appealing candidates for supercapacitors owing to its fascinating features, such as high theoretical capacity, high adsorption coefficient and fast electron transfer applied in
Boosting fast and stable potassium storage of iron
Abstract. Metal selenides with good electronic conductivity and high theoretical capacities are regarded as potential anodes for potassium-ion batteries
Ultrafast and durable Li/Na storage by an iron selenide anode
Abstract. In this work, FeSe nanoparticles were encapsulated into a polycystic carbon matrix (FeSe/C) followed by graphene coating (GF@FeSe/C) via a facile strategy, resulting in a
Rational design heterostructured bimetallic selenides for high
As the counterpart of lithium ion batteries (LIBs), the researches on sodium ion batteries (SIBs) and potassium ion batteries (KIBs) open up a vast range of prospects for large-scale energy storage system, which is a tribute to high economic efficiency due to the abundant Na/K resource and the analogous mechanism of energy storage with LIBs [1
Iron Selenide Microcapsules as Universal Conversion‐Typed
1 Introduction. Rechargeable alkali metal-ion (such as Li +, Na +, and K +) batteries (AMIBs) are significant potential and practical energy storage devices. [1-3] As the most famous example, rechargeable lithium-ion batteries (LIBs) have dominated the market in portable electronics and electric vehicles over the past two decades.[4, 5] However,
Boosting the sodium storage performance of iron selenides by a
The introduction of S induces a large number of Se vacancies in iron selenide, adjusts the electronic structure of iron selenide, reduces the Na + diffusion barrier, and optimizes the sodium storage performance of iron selenide together with the carbon confinement strategy.
In Situ Monitoring the Potassium-Ion Storage Enhancement in Iron
The iron selenide composite with ether-based electrolyte presents excellent potassium storage performance. We develop in situ visualization technique to monitor the potassiation–depotassiation process.
سابق：energy storage battery automatic container loading system
التالي：explaining the storage modulus
