1. Introduction. In the face of climate change caused by the burning of various fossil fuels for energy generation, it is urgent to improve the efficiency of energy usage and develop renewable and sustainable energy (such as solar, wind, geothermal, tidal, etc.) [1], [2], [3], [4].Particularly, the exorbitant utilization cost and intermittent …
Shell Structures: Introduction, Benefits, Types & Examples
The structural integrity of a lab-scale shell and tube latent heat thermal energy storage under transient conditions was investigated. The system was designed to use sodium at 750 °C as a heat transfer fluid with a high temperature phase change material, melting at 705.8 °C, as the heat storage medium.
The construction of the yolk-shell structure with an iron hydroxide@void@iron hydroxide/carbon configuration was confirmed through energy-dispersive X-ray (EDX) analysis, as shown in Fig. 1 e. h-Fe(OH) 3 /C synthesized from iron nitrate-carbon hollow nanospheres had a hollow structure, as shown in Fig. 2 a and b.
Recent advances in micro-/nano-structured hollow spheres for energy applications: From simple to complex systems. Hollow micro-/nano-structured materials …
The choice of active material for energy storage/conversion devices holds a pivotal role in determining their overall performance. Transition metal dichalcogenides (TMDs) for instance MoS 2, MoSe 2, VS 2, WS 2, WSe 2, and WTe 2 have been widely explored for these devices [22], [23], [24].Among these TMDs, MoS 2 has emerged as …
1. Introduction. LIBs have been widely used in electric vehicles and electronic devices as advanced energy storage applications [1], [2].However, the low specific capacity of commercial graphite anodes has made it difficult to meet the growing demand for the resource [3], [4], [5].Therefore, the development of high-capacity anode …
Request PDF | Using triply periodic minimal surfaces (TPMS)-based metal foams structures as skeleton for metal-foam-PCM composites for thermal energy storage and energy management applications ...
1 troduction. As global population growth and socioeconomic development continue, the demand for water and energy is steadily increasing. Currently, water usage for energy production accounts for 10 % of global water consumption [1].However, despite being one of the most critical resources, two-thirds of the world''s population is projected to face water …
The preparation of Cu 2 Se@MnSe heterojunction spherical shells combines the hydrothermal synthesis method and the fusion diffusion method. As shown in Fig. 1, isopropanol and glycerol are used as solvents, Cu(NO 3) 2 ·3H 2 O and Mn(NO 3) 2 ·4H 2 O are added, and the reaction is conducted at 180 °C for 6 h, centrifugation is …
Cost-effective synthesis of core-shell carbon spheres for supercapacitor applications remains a challenge. N/O codoped hierarchical porous carbon spheres with the core-shell architecture (MPG 2) are fabricated based on the dynamic Schiff-base chemistry free from any templates or complicated procedures.The nanoarchitectures of …
Silicon-based anode electrode materials prepared by reducing natural silicate minerals can not only improve the electrochemical properties of silicon materials using the special structure of natural minerals, but also have the advantages of environmental friendliness and low-cost, which has attracted more and more attention. In …
In this review, various core-shell structures of MoS 2 with carbon, metal oxides/sulfides, and conducting polymers are discussed for LIBs, SCs, and HERs. The …
The microstructures and morphologies of Co-ZIF-L and NCo-C-NS were systematically investigated (Fig. 2).The Co-ZIF-L exhibits a shape similar to leaves, with lateral dimensions of around 8 μm (Fig. 2 a, b).The XRD pattern (Fig. 2 c) matches the simulated XRD results, indicating the successful synthesis of Co-ZIF-L.As shown in Figure S2, when the …
1. Introduction. Deep decarbonization of current energy systems and associated productions remains a societal challenge that can be realized through high penetrations of various renewable energy [1], [2].However, due to the barriers of fluctuation and intermittence, the large-scale utilizations of renewable energy sources are usually …
The high performance of a pseudocapacitor electrode relies largely on a scrupulous design of nanoarchitectures and smart hybridization of bespoke active materials. We present a powerful two-step solution-based method …
Hard ceramic materials B 4 C are first used for Electrodes in flexible all-solid-state micro-supercapacitors.. Elaborated design of core-shell structure and small grain size endow with B 4 C an obvious advantage in energy storage.. Highly conductive graphene was used to serve as metal-free current collectors and the electrode …
A small-scale experimental LHTES system (Fig. 1) was designed to investigate the hydrothermal and mechanical performance of a high temperature shell and tube system with a PCM melting at 705.8 °C confined in the shell and sodium as the HTF passing through the tubes [50].The characteristics of high temperature crystalline salts …
The effective roles of Janus structures in different energy storage devices. 2. ... The presence of polar groups and a uniform pore distribution in the metal–organic framework (MOF) structure enabled efficient ion transport, reducing dendrite formation on the anode. ... Another intriguing advancement is the Janus shell structure, ...
Recent Advanced Supercapacitor: A Review of Storage ...
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1. Introduction. Constructing energy storage devices such as asymmetric supercapacitors (ASC) with high energy and power densities, high-rate charge/discharge capability, long lifetime and excellent reliability is necessary to solve the exhaustion of fossil fuels and serious energy shortage issues [[1], [2], [3], [4]].Nickel cobalt sulfide (Ni-Co-S) …
We present a powerful two-step solution-based method for the fabrication of transition metal oxide core/shell nanostructure arrays on various conductive substrates. Demonstrated examples include Co 3 O 4 or ZnO nanowire …
Section snippets Role of lattice mismatch to produce stable core shell MOF structures. The combination of two or more MOFs in an efficient hetero-structural form can provide elegant structures and elaborate functional properties such as tuneable energy gradient, variable pore structure, the reduced energy barrier for ion transfer, increased …
The cylindrical shell is a widely used structure in engineering practice, and its main form of failure is instability due to buckling. As a classical problem in the field of mechanics, the stability of cylindrical shells has been studied extensively. However, the large difference between the theoretically predicted results of the critical buckling load and the …
In this work, a novel core-shell structure consisting of a porous graphite core, a nanosilicon filler layer, and a pitch coating carbon shell has been developed for lithium-ion battery anode material. This structure was prepared by liquid-phase milling and carbonization processes. Compared with other silicon (Si)-based anode materials, this ...
In this paper, silicon carbon composites with core–shell structure were prepared by aluminothermic reduction and solvent evaporation with natural sepiolite as …
The core–shell structure can provide improved conductivity, increased active material loading, and enhanced stability, leading to enhanced energy storage …
Polymer-based capacitors are essential components in modern electronics and power systems. The long-standing challenge that is the contradiction between the breakdown strength and permittivity of dielectric materials has severely impeded their development for high-power capacitors. Polymer blends have recent Journal of Materials …
Owing to their special physical and chemical properties, nanomaterials with core–shell structures have been extensively synthesized and widely studied in the field …
Core-shell structured nanomaterials applied to energy storage2.1. Core-shell structured nanomaterials for supercapacitors ... The process of Li storage in metal oxides consists of the decomposition and ... Construction of a core-shell structure is regarded as an effective method for electrochemical performance improvement because …
Section snippets The synthesis of mesosphere-petal-like shell (MPLS) structure of MoS 2. According to Ref. [19], 0.5 g Na 2 MoO 4 ·2H 2 O and 1.0 g CS(NH 2) 2 were dissolved in 30 mL DI water and stirred for 30 min. Then the mixed solution were transferred to Teflon reactor and kept 200 °C for 24 h, which was cooled to room …
The high performance of a pseudocapacitor electrode relies largely on a scrupulous design of nanoarchitectures and smart hybridization of bespoke active materials. We present a powerful two-step solution-based method for the fabrication of transition metal oxide core/shell nanostructure arrays on various conductive substrates. Demonstrated …
Design and operating evaluation of a finned shell-and-tube thermal energy storage unit filled with metal foam. ... natural graphite sheet is an innovative material for fins owing to its high thermal physical properties, ultra-lightweight, and non-corrosivity. ... Performance evaluation on the gradient design of pore parameters for …