Core-shell materials for advanced batteries

Lu, Wenjie; Guo, Xiaotian; Luo, Yuqing; Li, Qing; Zhu, Rui; Pang, Huan

doi:10.1016/j.cej.2018.08.132

Cited by 168 publications

(51 citation statements)

References 313 publications

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“…A wide range of different structural combinations such as inorganic/inorganic, inorganic/organic, organic/inorganic, and organic/organic materials can be found in core-shell systems 1 . Core-shell structures often possess superb chemical and physical properties compared to their single-component counterparts 2 . Coating the particles with a thin shell of a compatible material makes it possible to control the inherent properties of powders, and introduces others desirable (physical and chemical) characteristics according to the nature of coating material, thereby improving their functional properties and expanding a broader range of potential application 3,4 .…”

Section: Introductionmentioning

confidence: 99%

“…Core-shell structures are highly functional materials with modifiable surface properties, in some cases decreasing the sintering, increasing the surface area, reactivity and thermal stability, regarding single constituent materials 5,6 . Particularly, the applications of inorganic coreshell particles are found in many fields including biology, chemistry, physics and engineering 7 , because of their multiple functions such as electrical, optical, magnetic, catalytic and electrocatalytic, among others 2,4,8,9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…Different morphologies of core-shell materials have been reported, such as spheres, wires, rods, tubes, belts, fibers, plates, sheets, cubes, etc. 2 . It is generally accepted that the performance of a catalyst can be strongly affected by its morphology, structure, and composition 10 .…”

Section: Introductionmentioning

confidence: 99%

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Fe3O4-TiO2 and Fe3O4-SiO2 Core-shell Powders Synthesized from Industrially Processed Magnetite (Fe3O4) Microparticles

Noval

Carriazo

2019

Mat. Res.

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The interest for core-shells has been increased in the recent years due to their improved and modifiable properties. In this work, Fe 3 O 4 -TiO 2 and Fe 3 O 4 -SiO 2 core-shells were successfully synthesized from an industrially produced magnetite-rich powder with micro-and nanometric particle sizes, superparamagnetic behavior and saturation magnetization of 49 emu/g. The reverse microemulsion method was used to the synthesis of these core-shells. X-ray diffraction, energy dispersive X-ray analysis, electron microscopy (SEM-TEM), and magnetization curves were used to characterize the solids. Core-shells with different morphology and size, coating of crystalline TiO 2 (anatase) or amorphous silica, and superparamagnetic performance at room temperature (300 K) were obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fe3O4-TiO2 and Fe3O4-SiO2 Core-shell Powders Synthesized from Industrially Processed Magnetite (Fe3O4) Microparticles

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Carriazo

2019

Mat. Res.

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“…Taking the core/shell ZnCo sulfides/Ni(OH) 2 as an example, both the pseudocapacitive sulfide nanowires and hydroxide nanoflakes contribute to the enriched redox reactions, resulting in the enhanced specific capacitance . For batteries, 2D shell materials can also serve as a protective outer layer and preserve the backbone during charge/discharge cycles . In LSBs, for example, the protective layer can suppress the diffusion of soluble polysulfides into the electrolyte, thereby achieving much improved cycling life .…”

Section: D‐2d Synergized Nanostructurementioning

confidence: 99%

One‐dimensional and two‐dimensional synergized nanostructures for high‐performing energy storage and conversion

Wang

2019

InfoMat

220

142

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To address the worldwide energy challenges, advanced energy storage and conversion systems with high comprehensive performances, as the promising technologies, are inevitably required on a timely basis. The performance of these energy systems is intimately dependent on the properties of their electrodes. In addition to the electrode materials selection and their compositional optimization, materials fabrication with the designed nanostructure also provides significant benefits for their performances. In the past decade, considerable efforts have been made to promote the search for multidimensional nanostructures containing both onedimensional (1D) and two-dimensional (2D) nanostructures in synergy, namely, 1D-2D synergized nanostructures. By developing the freestanding electrodes with such unique nanoarchitectures, the structural features and electroactivities of each component can be manifested, where the synergistic properties among them can be simultaneously obtained for further enhanced properties, such as the increased number of active sites, fast electronic/ionic transport, and so forth. This review overviews the state-of-the-art on the 1D-2D synergized nanostructures, which can be broadly divided into three groups, namely, core/shell, cactus-like, and sandwich-like nanostructures. For each category, we introduce them from the aspects of structural features, fabrication methodologies to their successful applications in different types of energy storage/conversion devices, including rechargeable batteries, supercapacitors, water splitting, and so forth. Finally, the main challenges faced by and perspectives on the 1D-2D synergized nanostructures are discussed. K E Y W O R D S1D-2D synergized nanostructure, cactus-like nanostructure, core/shell nanostructure, energy storage/conversion, sandwich-like nanostructure

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“…In comparison with batteries, SCs have higher power density but lower energy density due to the high ion flow in the redox reaction . Typical rechargeable batteries such as lithium‐ion batteries (LIBs) and sodium‐ion batteries (SIBs) have been widely studied for their safe operation, large capacity and good cycle stability . The electrode materials and electrochemical performancees are summarized in Table .…”

Section: Applicationsmentioning

confidence: 99%

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

Guo

Yang

et al. 2019

ChemElectroChem

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Iron(III) oxide (Fe 2 O 3 ) has attracted great attention, owing to its abundant natural resources, environmental friendliness, and low cost. Nevertheless, this material possesses an inferior rate capability and a cycle stability that is similar to most transition metal oxides. Graphene, with a one-atom-thick 2D structure, possesses superior mechanical properties, electrical conductivity, and stability, and excellent electrical and electrochemical behaviors. The hierarchical structure of graphene/Fe 2 O 3 composites provides a porous conductive network, close contact between the graphene and Fe 2 O 3 , a stress buffer space for charge transport, and superior structural stability. This composite consists of high conductivity graphene with interconnected Fe 2 O 3 , thus exposing abundant active sites for redox reactions and providing sufficient contacts with the electrolyte. Consequently, materials composed of Fe 2 O 3 and graphene have been widely explored, owing to their outstanding synergistic effects. Graphene can effectively limit the volume expansion and agglomeration of Fe 2 O 3 , whereas Fe 2 O 3 can prevent the restacking of graphene at the same time. This article mainly discusses the preparation of Fe 2 O 3 /graphene materials and their applications, including supercapacitors, rechargeable batteries, catalysis, and so forth. In addition, the perspectives and challenges of Fe 2 O 3 /graphene materials for different applications are also discussed.

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Core-shell materials for advanced batteries

Cited by 168 publications

References 313 publications

Fe3O4-TiO2 and Fe3O4-SiO2 Core-shell Powders Synthesized from Industrially Processed Magnetite (Fe3O4) Microparticles

Fe3O4-TiO2 and Fe3O4-SiO2 Core-shell Powders Synthesized from Industrially Processed Magnetite (Fe3O4) Microparticles

One‐dimensional and two‐dimensional synergized nanostructures for high‐performing energy storage and conversion

Synthesis and Applications of Graphene/Iron(III) Oxide Composites

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