Porous Ge@C materials via twin polymerization of germanium(<scp>ii</scp>) salicyl alcoholates for Li-ion batteries

Kitschke, Philipp; Walter, Marc; Rüffer, Tobias; Seifert, Andreas; Speck, Florian; Seyller, Thomas; Spange, Stefan; Lang, Heinrich; Auer, Alexander A.; Kovalenko, Maksym V.; Mehring, M.

doi:10.1039/c5ta09891b

Cited by 20 publications

(11 citation statements)

References 109 publications

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“…[7] Overall, various inorganic elements such as metals and metalloid elements could be implemented. [13,23,32,[24][25][26][27][28][29][30][31] In addition, functional groups can easily be introduced. Hence, TP is an excellent modular concept for numerous hybrid material formations, including nanoparticle loaded hybrid materials.…”

Section: Introductionmentioning

confidence: 99%

Twin Polymerization: A Unique Strategy towards Versatile Functional Materials

Scharf,

Notz,

Lang

2023

Eur J Inorg Chem

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Twin polymerization (=TP), a non‐aqueous synthetic methodology for the preparation of inorganic‐organic hybrid materials, by using, for example, salicylic‐ or furfurylic‐functionalized main‐group elements and/or transition metal‐based twin monomers, results in the formation of interpenetrating phase (nano)domains in a single step. The chemical, analytical and physical properties including theoretical studies of the (co)polymerization process of the respective twin monomers, polymers and the as‐generated hybrid and composite materials are described. Furthermore, the synthesis of hierarchical materials such as carbon hollow spheres as well as the encapsulation of nanoparticles (=NPs) within them by applying TP is envisaged. TP gives access to a wide range of applications (e. g., coatings for a variety of substrates, textile functionalization, carbon materials for Li−S or redox‐flow batteries) which will be discussed herein. The use of NP‐decorated hybrid and composite materials and nanoparticular MgO as catalysts in heterogeneous catalysis is reported as well.

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Section: Introductionmentioning

confidence: 99%

Twin Polymerization: A Unique Strategy towards Versatile Functional Materials

Scharf,

Notz,

Lang

2023

Eur J Inorg Chem

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“…[1] Therefore, to develop new anode materials as replacements for graphite is more important. [2][3][4][5] As the most promising substitute, Sn [6][7][8][9] has attracted considerable attention due to its high theoretical capacity (993 mAh• g -1 ). During lithiation/delithiation process, Sn anode produce volume expansion so that it cannot form a stable SEI film (solid electrolyte interface film), resulting in low coulombic efficiency, poor cycle life ability and rapid capacity fading.…”

Section: Introductionmentioning

confidence: 99%

“…During lithiation/delithiation process, Sn anode produce volume expansion so that it cannot form a stable SEI film (solid electrolyte interface film), resulting in low coulombic efficiency, poor cycle life ability and rapid capacity fading. [9][10][11][12] These problems limit the application of Sn in the field of lithium-ion battery anode. In order to overcome above problems, IMC has been brought into focus such as Cu6Sn5.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nanometer Cu6Sn5 and Its Application in Lithium-Ion Batteries Anode for Mass Production

Yu¹,

Zhang²,

Ji³

2020

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Cu6Sn5 nanoparticles have been synthesized successfully via chemical reduction method in aqueous solutions, which is a kind of intermetallic compound (IMC) with active/inert Sn-Cu interfaces. The active layer reacted with Li + and the inert layer inhibited the volume change effectively. Meanwhile, reduced oxide graphene (RGO)/Cu6Sn5 composites were also prepared by the similar method for the reason that the presence of RGO alleviated the aggregation of Cu6Sn5 nanoparticles. Therefore, RGO/Cu6Sn5 nanoparticles showed more superior electrochemical performance compared with Cu6Sn5 nanoparticles. The results showed that RGO/Cu6Sn5 nanoparticles exhibited promising cycling stability (461 mAh• g-1 after 18 cycles), high rate capability and prominent capacity retention, which can be extensively used in the field of lithium-ion battery anode. Herein, we also develop a simple and environmantal friendly fabrication approach to prepare Cu6Sn5 nanocomposites, which is suitable for mass production.

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“…By simple post-processing [10], a microporous organic phenolic resin or mesoporous inorganic silica network can be obtained for various applications. It appeared that these materials are of special interest in the fields of anodes for accumulators and gas adsorption systems [11] or for lithium ion batteries [12].…”

Section: Introductionmentioning

confidence: 99%

Morphology on Reaction Mechanism Dependency for Twin Polymerization

Prehl

Huster

2019

Polymers

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An in-depth knowledge of the structure formation process and the resulting dependency of the morphology on the reaction mechanism is a key requirement in order to design application-oriented materials. For twin polymerization, the basic idea of the reaction process is established, and important structural properties of the final nanoporous hybrid materials are known. However, the effects of changing the reaction mechanism parameters on the final morphology is still an open issue. In this work, the dependence of the morphology on the reaction mechanism is investigated based on a previously introduced lattice-based Monte Carlo method, the reactive bond fluctuation model. We analyze the effects of the model parameters, such as movability, attraction, or reaction probabilities on structural properties, like the specific surface area, the radial distribution function, the local porosity distribution, or the total fraction of percolating elements. From these examinations, we can identify key factors to adapt structural properties to fulfill desired requirements for possible applications. Hereby, we point out which implications theses parameter changes have on the underlying chemical structure.

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Porous Ge@C materials via twin polymerization of germanium(ii) salicyl alcoholates for Li-ion batteries

Abstract: Porous Ge@C materials as anode materials for Li-ion batteries were synthesized by the novel concept of twin polymerization starting from germylenes based on salicyl alcoholates.

Cited by 20 publications

References 109 publications

Twin Polymerization: A Unique Strategy towards Versatile Functional Materials

Twin Polymerization: A Unique Strategy towards Versatile Functional Materials

Preparation of Nanometer Cu6Sn5 and Its Application in Lithium-Ion Batteries Anode for Mass Production

Morphology on Reaction Mechanism Dependency for Twin Polymerization

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