A5055375254- Advancements in Battery Materials
- Electronic and Structural Properties of Oxides
- Advanced Battery Materials and Technologies
- Advancements in Solid Oxide Fuel Cells
- Magnetic and transport properties of perovskites and related materials
- Supercapacitor Materials and Fabrication
- Ferroelectric and Piezoelectric Materials
- Fuel Cells and Related Materials
- Perovskite Materials and Applications
- Advanced Battery Technologies Research
- Semiconductor materials and devices
- Conducting polymers and applications
- Ionic liquids properties and applications
- Advanced Condensed Matter Physics
- Solid-state spectroscopy and crystallography
- Electrochemical Analysis and Applications
- Analytical Chemistry and Sensors
- Gas Sensing Nanomaterials and Sensors
- Electrocatalysts for Energy Conversion
- Inorganic Fluorides and Related Compounds
- Catalytic Processes in Materials Science
- Physics of Superconductivity and Magnetism
- Thermal Expansion and Ionic Conductivity
- Extraction and Separation Processes
- biodegradable polymer synthesis and properties
Max Planck Institute for Solid State Research
2016-2025
Georgia Institute of Technology
2012-2024
Stuttgart Observatory
1995-2021
Max Planck Institute for Metabolism Research
2021
Max Planck Society
2007-2019
Hegau-Bodensee-Klinikum Singen
2013-2019
John Wiley & Sons (Germany)
2012-2017
Superconducting and other Innovative Materials and Devices Institute
2017
Maier Foundation
2017
Integrated Systems Solutions (United States)
2016
Abstract Heteroatom (N or S)‐doped graphene with high surface area is successfully synthesized via thermal reaction between oxide and guest gases (NH 3 H 2 S) on the basis of ultrathin oxide‐porous silica sheets at temperatures. It found that both N S‐doping can occur annealing temperatures from 500 to 1000 °C form different binding configurations edges planes graphene, such as pyridinic‐N, pyrrolic‐N, graphitic‐N for N‐doped thiophene‐like S, oxidized S S‐doped graphene. Moreover, resulting...
Abstract Hybrid organic–inorganic lead halide perovskite APbX 3 pigments, such as methylammonium iodide, have recently emerged excellent light harvesters in solid‐state mesoscopic solar cells. An important target for the further improvement of performance perovskite‐based photovoltaics is to extend their optical‐absorption onset into red enhance solar‐light harvesting. Herein, we show that this goal can be reached by using a mixture formamidinium (HN=CHNH + , FA) and (CH NH MA) cations A...
This critical review presents the state of art research progress, proposes strategies to improve conductivity solid electrolytes, discusses chemical and electrochemical stabilities, uncovers future perspectives for batteries.
Hollow carbon nanospheres are synthesized via the hydrothermal carbonization of glucose in presence nanosized latexes templates. The resulting disordered hollow exhibits excellent characteristics terms reversible capacities, cycling performance, and rate capability for application as an anode material Na-based batteries.
Full charge ahead: Hydrothermal carbonization of glucose in the presence Si nanoparticles yields a [email protected]x/C nanocomposite that has high reversible lithium-storage capacity, excellent cycling performance, and rate capability. This material shows promise as an anode lithium-ion batteries. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z704287_s.pdf or from author. Please note: The publisher not responsible content...
The preparation and electrochemical storage behavior of MoS2 nanodots--more precisely single-layered ultrasmall nanoplates--embedded in carbon nanowires has been studied. is achieved by an electrospinning process that can be easily scaled up. rate performance cycling stability both lithium sodium were found to outstanding. is, moreover, highly exciting from a fundamental point view, as the differences between usual modes--insertion, conversion, interfacial storage--are beneficially blurred....
Nanometer-sized rutile shows much higher electroactivity towards Li insertion than micrometer-sized rutile. Up to 0.8 mol of per mole TiO2 can be inserted into nanometer-sized at room temperature (see figure), which is able reversibly accommodate up Li0.5TiO2 with excellent capacity retention and high rate capability on cycling, rendering it a promising anode material for high-power lithium-ion batteries.
Abstract In this paper, we report on Li storage in hierarchically porous carbon monoliths with a relatively higher graphite‐like ordered structure. Macroscopic both mesopores and macropores were successfully prepared by using meso‐/macroporous silica as template mesophase pitch precursor. Owing to the high porosity (providing ionic transport channels) electronic conductivity (ca. 0.1 S cm –1 ), monolith mixed conducting 3D network shows superior high‐rate performance if used anode material...
Nanostructured materials offer the possibility to make use of small transport lengths and separation distances almost like in fluids, but unlike higher structural stability solid state can be taken advantage of. Recent findings field Li-batteries highlight potential for room temperature applications. This paper addresses advantages disadvantages nanostructured matter with respect stability, storage capacity, voltage charging/discharging rates. In this context we discuss a novel interfacial...
An optimized nanostructure design of electrode material for high power, energy lithium batteries is realized. Highly Li-permeable materials are obtained by introducing hierarchical mixed conducting networks on both nanoscale and microscale levels (see figure). A mesoporous TiO2:RuO2 composite selected as an example this new design.
Abstract In this paper, we report that Li can be stored in RuO 2 with an unusually high coulombic efficiency. The process involves three electrochemical steps: i) formation of a Ru/Li O nanocomposite, ii) Li‐containing surface film, and iii) interfacial deposition within the matrix. Corresponding to storage 5.6 mole ions per , capacity 1130 mAh g –1 is achieved. Furthermore, virtually all inserted extracted, corresponding nearly 100 % efficiency at first cycle. Achieving complete...
Three-dimensional macroporous silicon (see image) was synthesized by a magnesiothermic reduction method as an anode material for lithium ion batteries. An improved storage performance obtained after coating silver nanoparticles on the surface of silicon. The silver-coated 3D shows promise in Detailed facts importance to specialist readers are published "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted authors. Please note:...
We report on electrochemical reactions of a variety metal fluorides oxides (TiO, NbO, and TiN with lithium in nonaqueous cells over wide voltage range (0.02-4.3 V) at room temperature. In most cases, deep Li uptake occurs via heterogeneous reaction resulting transformation or O S N) into nanocrystalline amorphous composite from which can be extracted under restoration the phase. Thermodynamic kinetic aspects, especially overpotential its possible origins for both extraction processes, are...
Nitrogen-doped activated porous carbon fibres (ACFs) were prepared as anode materials for Na-ion batteries. They exhibit excellent electrochemical performance, especially rate performance. The performance is ascribed to the fibre-like morphology and facilitated charge transfer. influence of nitrogen functionalities on transfer N-doped anodes Na ion batteries discussed.
Abstract A hierarchical, nanoporous TiO 2 structure is successfully prepared by a simple in situ hydrolysis method. Used as an anode material, it achieves sustained high lithium storage performance especially at charge/discharge rates due to its substantially surface area. The material shows two different major modes: a) bulk insertion, and b) pseudo‐capacitive interfacial storage, which responsible for 64% of the total capacity. In order kinetically emphasize even further, we cycle directly...
Carbon-coated Sn nanoparticles in carbon nanofibers (see image) were fabricated by pyrolysis of coaxially electrospun as an anode material for Li-ion batteries. The significantly improved electrochemical performance such electrode is believed to result from the unique nanostructure consisting a thin shell around tin nanoparticles, which are further encapsulated hollow nanofibers. Detailed facts importance specialist readers published "Supporting Information". Such documents peer-reviewed,...