High-performance germanium nanowire-based lithium-ion battery anodes extending over 1000 cycles through in situ formation of a continuous porous network. Nano Lett., 14 (2014 ... A commercial conducting polymer as both binder and conductive additive for silicon nanoparticle-based lithium-ion battery negative electrodes. ACS Nano, 10 …
An in situ study of stress evolution and mechanical behavior of germanium as a lithium-ion battery electrode material is presented. Thin films of germanium are …
1. Introduction Recently, silicon (Si), germanium (Ge) and tin (Sn) are recognised as high performance lithium-ion battery (LIB) anodes due to their much higher theoretical capacities of 4200,1600 and 990 mAh g −1, respectively [1, 2].Although Si is demonstrated as ...
Novel Germanium/Polypyrrole Composite for High Power ...
Germanium (Ge)-based materials can serve as promising anode candidates for high-energy lithium-ion batteries (LIBs). However, the rapid capacity decay caused by huge volume expansion severely retards their application. Herein, we report a facile and controllable synthesis of Ge nanowire anode materials through molten-salt …
Introduction. Recently, silicon (Si), germanium (Ge) and tin (Sn) are recognised as high performance lithium-ion battery (LIB) anodes due to their much higher theoretical capacities of 4200,1600 and 990 mAh g −1, respectively [1,2].Although Si is demonstrated as an attractive anode candidate, however, Ge possesses unique …
Germanium and germanium-based compounds are widely used in microelectronics, optics, solar cells, and sensors. Recently, germanium and its oxides, nitrides, and phosphides have been studied as active electrode materials in lithium- and sodium-ion battery anodes. Herein, the newly introduced highly s …
Lithium-ion batteries using germanium as the anode material are attracting attention because of their high-capacity, higher conductivity, and lithium-ion diffusivity relative to silicon. Despite recent studies on Ge electrode reactions, there is still limited understanding of the reaction mechanisms governing crystalline Ge and the …
Metallic germanium is a promising anode material in secondary lithium-ion batteries (LIBs) due to its high theoretical capacity (1623 mAh/g) and low operating voltage, coupled with the high lithium-ion diffusivity and electronic conductivity of lithiated Ge. Here, the lithiation mechanism of micron-sized Ge anodes has been investigated with X-ray …
The original version of a negative electrode of lithium-ion battery is prepared. To this end the arrays of Ge nanowires were electrodeposited from an aqueous solution onto a titanium substrate with drop-like indium crystallization centers. ... High-performance germanium nanowire-based lithium-ion battery anodes extending over …
The continuous development of portable devices and new energy vehicles has led to an increasing demand for high‐performance lithium‐ion batteries (LIBs), and anode materials, as a key part of LIBs, are being explored. Germanium‐based anode materials are considered to have good potential for application because of their high …
The lithium storage performance of np-Ge and Ge particle was characterized by cyclic voltammetry (CV) and static-current charge-discharge. Figure 4 a shows typical CV curves of the np-Ge electrode in the 0.1–2.9 V versus Li/Li + potential window at a scan rate of 0.1 mV s −1.The reduction peak of the first discharge could be …
Here we report the formation of high-performance and high-capacity lithium-ion battery anodes from high-density germanium nanowire arrays grown directly from the current collector. The anodes retain capacities of ∼900 mAh/g after 1100 cycles with excellent rate performance characteristics, even at very high discharge rates of 20–100C. We show by …
Germanium-based materials with extremely high theoretical energy capacities have gained a lot of attention recently as potential anodes for lithium ion batteries. These materials can also offer improved Li insertion/extraction kinetics and cycling performance, providing a promising candidate of anode to meet the increasing …
Mesoporous Germanium Anode Materials for Lithium-Ion Battery with Exceptional Cycling Stability in Wide Temperature Range. Sinho Choi, Sinho Choi. School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919 South Korea ... This study reports a synthesis of newly developed …
A nanowire battery uses nanowires to increase the surface area of one or both of its electrodes, which improves the capacity of the battery.Some designs (silicon, germanium and transition metal oxides), variations of the lithium-ion battery have been announced, although none are commercially available. All of the concepts replace the traditional …
Here we report the formation of high-performance and high-capacity lithium-ion battery anodes from high-density germanium nanowire arrays grown directly from the current collector. The anodes retain capacities of ∼ 900 mAh/g after 1100 cycles with excellent rate performance characteristics, even at …
High-performance germanium nanowire-based lithium-ion battery anodes extending over 1000 cycles through in situ formation of a continuous porous network Nano Lett., 14 (2) (2014), pp. 716-723, 10.1021/nl403979s View in Scopus Google Scholar [11]
The high-energy lithium ion battery is an ideal power source for electric vehicles and grid-scale energy storage applications. Germanium is a promising anode material for lithium ion batteries due to its high specific capacity, but still suffers from poor cyclability. Here, we report a facile preparation of a germanium–graphene nanocomposite using a low …
The anode materials based on conversion or alloying reaction typically show a large specific capacity and suitable working potential in lithium-ion batteries (LIBs). However, the large volume change and relatively low ionic/electronic conductivity lead to poor reversibility and cycle life. In the present work, we report a new lithium–niobium germanate LiNbGeO5 …
Mesoporous germanium materials were synthesized via the self-templating method. When used as the anode for lithium ion batteries, the mesoporous germanium exhibits excellent cycling stability with a high reversible specific capacity (803 mA h g −1) within 100 cycles at 0.5 C rate, in addition to improved rate performance (655 …
Semantic Scholar extracted view of "Nanoporous germanium as high-capacity lithium-ion battery anode" by Shuai Liu et al. DOI: 10.1016/J.NANOEN.2015.03.039 Corpus ID: 97760306 Nanoporous germanium as high-capacity lithium-ion battery anode @article ...
Germanium is a highly promising anode material for lithium-ion batteries as a consequence of its large theoretical specific capacity, good electrical conductivity, and fast lithium ion diffusivity. In this work, Co3O4 nanowire array fabricated on nickel foam was designed as a nanostructured current …
Germanium and germanium-based compounds are widely used in microelectronics, optics, solar cells, and sensors. Recently, germanium and its oxides, nitrides, and phosphides have been studied as active electrode materials in lithium- and sodium-ion battery anodes.
The high-energy lithium ion battery is an ideal power source for electric vehicles and grid-scale energy storage applications. Germanium is a promising anode material for lithium ion batteries due to its high specific capacity, but still suffers from poor cyclability. Here, we report a facile preparation of
In recent decade, special interest is paid to germanium as potential material of negative electrodes in lithium-ion and, the more so, sodium-ion batteries. In the …
Germanium is a promising anode for lithium ion batteries (LIB) because of its potential rate capability and high theoretical specific capacity. Here we demonstrate a seamlessly connected graphene and carbon nanotube (GCNT) hybrid that serves as an integral current collector for a Ge anode.
3D nitrogen-doped graphene foam with encapsulated germanium/nitrogen-doped graphene yolk-shell nanoarchitecture for high-performance flexible Li-ion battery Download PDF Article
Germanium (Ge)-based materials can serve as promising anode candidates for high-energy lithium-ion batteries (LIBs). However, the rapid capacity decay caused by huge volume expansion severely retards their application. Herein, we report a facile and controllable synthesis of Ge nanowire anode materials through molten-salt …
Germanium phosphide is a potential anode material because of its high theoretical capacity and incredible rate capability on lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). However, the huge volume change that occurs while germanium phosphide is converted to Na3P or Li3P directly leads to poor cyclability and …
Lithium-alloyable materials such as Ge and P have attracted considerable attention as promising anode materials for lithium-ion batteries (LIBs) owing to their high theoretical …
Germanium and germanium-based compounds are widely used in microelectronics, optics, solar cells, and sensors. Recently, germanium and its oxides, nitrides, and phosphides have been studied as active electrode materials in lithium- and sodium-ion battery anodes. Herein, the newly introduced highly s …
Germanium (Ge) is a promising anode material for lithium-ion batteries (LIBs) due to its large theoretical specific capacity (1600 mA h g −1), high Li diffusivity and large intrinsic electrical conductivity spite these merits, its large volumetric change during lithiation/delithiation process and relatively high production cost make it difficult to use in …
This study reports a synthesis of newly developed mesoporous germanium (Ge) particles prepared by a zincothermic reduction at a mild temperature for high …
The formation of high-performance and high-capacity lithium-ion battery anodes from high-density germanium nanowire arrays grown directly from the current collector with excellent rate performance characteristics is reported. Here we report the formation of high-performance and high-capacity lithium-ion battery anodes from high …
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