Nanostructured Li<sub>2</sub>MnSiO<sub>4</sub>/C Cathodes with Hierarchical Macro‐/Mesoporosity for Lithium‐Ion Batteries

He, Guang; Manthiram, Arumugam

doi:10.1002/adfm.201400610

Cited by 53 publications

(28 citation statements)

References 58 publications

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“…[112][113][114][115][116] Yang and co-workers reported a Li 2 MnSiO 4 /C nanocomposite with a discharge capacity of 209 mAh g −1 at 5 mA g −1 , which first material to achieve a reaction of more than one e − among the silicate cathode materials. Furthermore, Li 2 MnSiO 4 undergoes a gradual decrease in its crystallinity during cycling owing to the position exchange between Li and Mn.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

Zhou

Zhang

et al. 2017

Advanced Energy Materials

485

218

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mobile phones, and digital cameras. [1][2][3][4][5][6] Recently, LIBs have also been intensively pursued as an energy-storage technology for electrical vehicles and stationary power stations. [7][8][9][10] The reaction equations, structures, and costs of the individual components of LIBs with the common LiCoO 2 ‖polymer electrolyte‖graphite system are shown in Figure 1. It can be seen that cathode and anode materials, which serve as the most important components of LIBs, largely decide the electrochemical performance and cost of the batteries. According to the intrinsic features and reaction mechanisms of materials, four types of cathode materials and three sorts of anode materials have been investigated. [11][12][13][14][15][16] The traditional electrode material LiCoO 2 is hindered, however, by its relatively low specific capacity and the high price of Co resources, along with its inferiority in terms of environmental friendliness. LiMn 2 O 4 suffers from the Jahn-Teller distortion of Mn 3+ and the dissolution of Mn 2+ in the electrolyte, resulting in severe capacity attenuation and poor cycling performance. Graphite, as the most widely employed anode material, is limited by its finite capacity. Though Li 4 Ti 5 O 12 typically offers excellent cycle life and high safety, its relatively high potential would entail low energy density. In contrast, high-capacity Si material cannot offer long Since their successful commercialization in 1990s, lithium-ion batteries (LIBs) have been widely applied in portable digital products. The energy density and power density of LIBs are inadequate, however, to satisfy the continuous growth in demand. Considering the cost distribution in battery system, it is essential to explore cathode/anode materials with excellent rate capability and long cycle life. Nanometer-sized electrode materials could quickly take up and store numerous Li + ions, afforded by short diffusion channels and large surface area. Unfortunately, low thermodynamic stability of nanoparticles results in electrochemical agglomeration and raises the risk of side reactions on electrolyte. Thus, micro/nano and hetero/hierarchical structures, characterized by ordered assembly of different sizes, phases, and/or pores, have been developed, which enable us to effectively improve the utilization, reaction kinetics, and structural stability of electrode materials. This review summarizes the recent efforts on electrode materials with hierarchical structures, and discusses the effects of hierarchical structures on electrochemical performance in detail. Multidimensional self-assembled structures can achieve integration of the advantages of materials with different sizes. Core/yolk-shell structures provide synergistic effects between the shell and the core/yolk. Porous structures with macro-, meso-, and micropores can accommodate volume expansion and facilitate electrolyte infiltration.

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Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

Zhou

Zhang

et al. 2017

Advanced Energy Materials

485

218

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“…For example, high surface area in solar cells can improve the rate, but it can also lead to increased recombination. 438 The simple fabrication methods of CBPM allow one to make mixed structures, for example a conducting matrix with embedded active particles, 62,464 as shown in Figure 28. Because the nanoparticles are fully embedded in the matrix, they do not dislodge from the structure, and the efficiency is stable even after hundreds of cycles ( Figure 28B).…”

Section: Factors Influencing Electrode Applicationsmentioning

confidence: 99%

A colloidoscope of colloid-based porous materials and their uses

et al. 2016

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Nature evolved a variety of hierarchical structures that produce sophisticated functions. Inspired by these natural materials, colloidal self-assembly provides a convenient way to produce structures from simple building blocks with a variety of complex functions beyond those found in nature. In particular, colloid-based porous materials (CBPM) can be made from a wide variety of materials. The internal structure of CBPM also has several key attributes, namely porosity on a sub-micrometer length scale, interconnectivity of these pores, and a controllable degree of order. The combination of structure and composition allow CBPM to attain properties important for modern applications such as photonic inks, colorimetric sensors, self-cleaning surfaces, water purification systems, or batteries. This review summarizes recent developments in the field of CBPM, including principles for their design, fabrication, and applications, with a particular focus on structural features and materials' properties that enable these applications. We begin with a short introduction to the wide variety of patterns that can be generated by colloidal self-assembly and templating processes. We then discuss different applications of such structures, focusing on optics, wetting, sensing, catalysis, and electrodes. Different fields of applications require different properties, yet the modularity of the assembly process of CBPM provides a high degree of tunability and tailorability in composition and structure. We examine the significance of properties such as structure, composition, and degree of order on the materials' functions and use, as well as trends in and future directions for the development of CBPM.

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“…The nanoscaled subunits provide shorter lithium diffusion distance and larger contact area between electrode and electrolyte, and the self-assembled hierarchical microstructures improve the energy packing density2930. Therefore, constructing carbon and active material hierarchical structures is believed a promising way to achieve good electrochemical performance and desired energy density313233.…”

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confidence: 99%

Carbon wrapped hierarchical Li3V2(PO4)3 microspheres for high performance lithium ion batteries

Liang

Tan

Xiong

et al. 2016

Sci Rep

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Nanomaterials are extensively studied in electrochemical energy storage and conversion systems because of their structural advantages. However, their volumetric energy density still needs improvement due to the high surface area, especially the carbon based nanocomposites. Constructing hierarchical micro-scaled materials from closely stacked subunits is proposed as an effective way to solve the problem. In this work, Li3V2(PO4)3@carbon hierarchical microspheres are prepared by a solvothermal reaction and subsequent annealing. Hierarchical Li3V2(PO4)3 structures with different subunits are obtained with the aid of polyvinyl pyrrolidone (PVP). Moreover, excessive PVP interconnect and form PVP-based hydrogels, which later convert into conductive carbon layer on the surface of Li3V2(PO4)3 microspheres during the annealing process. As a cathode material for lithium ion batteries, the 3D carbon wrapped Li3V2(PO4)3 hierarchical microspheres exhibit high rate capability and excellent cycling stability. The electrode has the capacity retention of 80% after 5000 cycles even at 50C.

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Nanostructured Li₂MnSiO₄/C Cathodes with Hierarchical Macro‐/Mesoporosity for Lithium‐Ion Batteries

Cited by 53 publications

References 58 publications

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

A colloidoscope of colloid-based porous materials and their uses

Carbon wrapped hierarchical Li3V2(PO4)3 microspheres for high performance lithium ion batteries

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Nanostructured Li2MnSiO4/C Cathodes with Hierarchical Macro‐/Mesoporosity for Lithium‐Ion Batteries

Cited by 53 publications

References 58 publications

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

Recent Developments on and Prospects for Electrode Materials with Hierarchical Structures for Lithium‐Ion Batteries

A colloidoscope of colloid-based porous materials and their uses

Carbon wrapped hierarchical Li3V2(PO4)3 microspheres for high performance lithium ion batteries

Contact Info

Product

Resources

About

Nanostructured Li₂MnSiO₄/C Cathodes with Hierarchical Macro‐/Mesoporosity for Lithium‐Ion Batteries