A5052197982- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- Fullerene Chemistry and Applications
- Reliability and Maintenance Optimization
- Electromagnetic wave absorption materials
- Conducting polymers and applications
- Thermal Expansion and Ionic Conductivity
- Carbon Nanotubes in Composites
- Advanced Memory and Neural Computing
- Boron and Carbon Nanomaterials Research
- Magnetic Properties and Synthesis of Ferrites
- Nanomaterials for catalytic reactions
- Anodic Oxide Films and Nanostructures
- Semiconductor materials and interfaces
- Electric Vehicles and Infrastructure
ABB (Switzerland)
2022-2024
Paul Scherrer Institute
2015-2018
Jiangsu University of Technology
2010-2014
Wuhan University
2012
A new type of water electrolysis is implemented using an alkaline polymer electrolyte (APE) and non-precious metal catalysts, working only with pure water. The membrane–electrode assembly (MEA) fabricated by sandwiching a self-crosslinking quaternary ammonia polysulfone (xQAPS) membrane between Ni–Fe anode Ni–Mo cathode, both impregnated xQAPS ionomer. Such initial prototype APE has exhibited decent performance comparable to that the well-developed electrolyzer.
High-voltage aqueous electrolyte based supercapacitors (U > 1.23 V) attract significant attention for next-generation high power, low cost and environmentally friendly energy storage applications. Cell ageing is however markedly pronounced at elevated voltages results in accelerated overall performance fade increased safety concerns. Online electrochemical mass spectrometry, combined with cell pressure analysis, the first time shown to provide a powerful means situ investigation of...
The chemical and electrochemical instabilities of LiPF6 in carbonate electrolytes for Li-ion batteries were studied with online mass spectrometry (OEMS). Decomposition based on eventually results the formation POF3, which is readily detected followed situ during operation Li-rich HE-NCM-based cells. Electrode potentials above ∼4.2 V leads to solvent oxidation presumably ROH species, subsequently hydrolyze salt initiate a thermally activated autocatalytic electrolyte decomposition cycle...
In Li-ion batteries, Li4Ti5O12 (LTO) has merits of an excellent cycling stability combined with a safe working potential 1.55 V vs. Li+/Li at which no adverse side-reactions the electrolyte are expected. Concerns regarding gassing LTO, especially elevated temperatures, have however recently been reported. this work, LTO behavior 50°C is investigated by in situ pressure and online electrochemical mass spectrometry (OEMS), allowing for both qualitative quantitative analysis evolving gases. H2,...
Spinel LiNi0.5Mn1.5O4 (LNMO) is an attractive next-generation cathode material for Li-ion batteries because of its reversible specific charge at high operating potentials. However, the cycling efficiency cells with LNMO-based cathodes limited by poor anodic stability most commonly employed alkyl carbonate electrolytes. The electrolyte/electrode investigated in situ gas analysis techniques, including cell pressure measurements and online electrochemical mass spectrometry (OEMS), to monitor...
Phosphorus is considered as a promising candidate for the replacement of graphite active material in Li-ion battery electrodes owing to its 6-fold higher theoretical specific charge. Unfortunately, phosphorus-based suffer from large volume changes upon cycling, leading poor electrochemical performance. Furthermore, red phosphorus (Pred) known release phosphine gas (PH3) once contact with water (even at ppm level), and thus, safety profile needs be assessed. In this context,...
Abstract Electrical double‐layer capacitors (EDLCs) commonly denoted supercapacitors are rechargeable energy storage devices with excellent power and delivery metrics intermediate to conventional batteries. High‐voltage aqueous electrolyte based EDLCs particularly attractive due their high‐power capability, facile production, environmental advantages. should last for thousands of cycles evaluation future cell chemistries require long‐term costly galvanostatic cycling. Voltage holding tests...
Sub-micrometer-sized magnesium ferrite spheres consisting of uniform small particles have been prepared using a facile, large-scale solid-state reaction employing molten salt technique. Extensive structural characterization the as-prepared samples has performed scanning electron microscope, transmission microscopy, high-resolution selected area diffraction, and X-ray diffraction. The yield sub-micrometer is up to 90%, these are made square rectangular nanosheets. magnetic properties...
Stationary battery energy storage systems (BESS) have been developed for a variety of uses, facilitating the integration renewables and transition. Over last decade, installed base BESSs has grown considerably, following an increasing trend in number BESS failure incidents. An in-depth analysis these incidents provides valuable lessons improving safety BESS. This paper discusses multiple layers at cell, module, rack levels to elucidate mechanisms thermal runaway failures. We further provide...
Li-ion cathode materials based on xLi 2 MnO 3 ·(1–x)(Ni y Co z Mn 1-y-z )O (NCM), including both the stoichiometric (x = 0) as well Li-rich derivatives > 0), are currently under intensive research and development to be implemented in next-generation batteries because of their high specific charge operating potential [1, 2]. By tuning transition metal composition, properties can tailored according application requirements: charge, rate capability cycle life. However, compositions offering...
Spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) is one of the most promising next-generation cathode candidates for Li-ion batteries because its reversible specific charge 147 mAh/g and a high operating potential 4.7 V.[1] However, cycling performance high-voltage cathodes limited by poor anodic stability commonly employed alkyl carbonate electrolytes, e.g. ethylene (EC) dimethyl (DMC).[2] Increasing attention paid to based electrolytes applications, including selection co-solvents, additives, role...
Abstract Carbon nanorods are prepared at large scale from CS 2 and metallic Li (autoclave, 600 °C, 10 h, yield given in g) characterized by powder XRD, SEM, TEM, N physisorption.