Showing papers in "Journal of Power Sources in 2012"

TL;DR: In this paper, a review of the lithium ion battery hazards, thermal runaway theory, basic reactions, thermal models, simulations and experimental works is presented, and the related prevention techniques are summarized and discussed on the inherent safety methods and safety device methods.

TL;DR: In this paper, a comparative study of twelve equivalent circuit models for Li-ion batteries is presented, which are selected from state-of-the-art lumped models reported in the literature.

TL;DR: In this paper, the performance and issues associated with a variety of carbon based materials such as carbon nanotubes (CNT), carbon nanofibers (CNF), mesoporous carbon and graphene as well as non-carbonaceous based materials, e.g. titania, indium oxides, alumina, silica and tungsten oxide and carbide, ceria, zirconia nanostructures and conducting polymers catalyst support materials are clearly described in this review.

TL;DR: In this article, solid oxide electrolysis cells (SOEC) have attracted a great interest in the last few years, as they offer significant power and higher efficiencies compared to conventional low temperature electrolysers.

TL;DR: In this paper, a review of the recent progress of using carbon nanotubes as components of anode material to improve the performance of lithium ion batteries is presented, where the authors show that the highly conductive carbon-nanotubes offer enhanced electronic transport in these nanostructured anode materials.

TL;DR: In this paper, a mechanistic model that can enable battery diagnosis and prognosis is presented, which can simulate various "what-if" scenarios of battery degradation modes via a synthetic approach based on specific electrode behavior with proper adjustment of the loading ratio and the extent of degradation in and between the two electrodes.

TL;DR: In this paper, a recycling process for portable Li-ion batteries was developed combining a mechanical pretreatment with hydro-and pyrometallurgical process steps for the recovery of cobalt and lithium.

TL;DR: In this article, a multivariable analysis of a detailed series of accelerated lifetime experiments representing typical operating conditions in a hybrid electric vehicle is presented, where the impact of temperature and state of charge on impedance rise and capacity loss is quantified.

TL;DR: In this paper, a vanadium redox flow battery with a peak power density of 557mW cm −2 at a state of charge of 60% was demonstrated with a zero-gap flow field cell architecture and non-wetproofed carbon paper electrodes.

TL;DR: In this paper, a self-template strategy based on banana peel is proposed to create hierarchical porous carbon foams (HPCFs) for supercapacitors. But the results show that the resulting HPCFs are composed of macroporous cores with mesoporous and microporous channels.

TL;DR: In this paper, the authors show that cubic stabilizing substitutions outside of the Li-ion sub-lattice are preferable to obtain faster Li ion conductivity, and they also suggest that cubic stabilization substitutions are preferable for obtaining faster Liion conductivity.

TL;DR: In this article, the effects of interlayer spacing, oxygen content, BET specific surface area and disorder degree on the specific capacitance of pyrolytic graphene sheets were explored systematically, and the variation of oxygen-containing groups was shown to be a main factor influencing the EDL capacitor performances of the pyrolysic graphene.

TL;DR: In this article, the authors investigated the most important limiting parameters of a Li/S cell and concluded that the cell capacity limitation may be linked to dissolution of sulfur material and to passivation of the positive electrode.

TL;DR: In this article, the dissolution behavior of the NCM cathode at different charge states in 1M LiPF 6 /EC:DEC (1:1) electrolyte is determined with inductively coupled plasma (ICP) technique.

TL;DR: In this paper, a combination of ultrasonic washing, calcination, and organic acid leaching was used to recover the major components from spent Li-ion batteries (LIBs) to prevent environmental pollution and recycle valuable metals.

TL;DR: In this paper, a mathematical model coupling electronic conduction, mass transfer, energy balance and electrochemical mechanism is developed to estimate lithium ion diffusivity and chemical reaction rate of cathode material.

TL;DR: In this article, the electrochemical performance and charge transfer resistance of an all-solid-state lithium ion battery consisting of LiCoO2 (LCO; cathode), Li6.75La3Zr1.75Nb0.25O12 (LLZONb; solid electrolyte), and lithium (anode) were investigated.

TL;DR: In this article, the authors evaluated battery performance and cost in the short, medium and long term for battery electric vehicles (BEVs) and compared them to diesel and petrol cars.

TL;DR: In this article, the capacity fade of graphite/LFP commercial cells was investigated under three different conditions of temperature (30, 45, and 60 °C) and SOC (30-, 65, and 100%) during up to 8 months.

TL;DR: In this paper, the authors used LS Dyna numerical simulation and test results for the through-thickness compression, hemispherical punch indentation and confined compression to develop a constitutive model for Li-ion batteries.

TL;DR: In this article, two types of graphene materials with very different morphologies, namely flat sheets of paper and crumpled particles, were used to modify anode and cathode electrodes in MFCs.

TL;DR: In this article, the first part of a complete ex-situ characterisation of a wide range of commercial Gas Diffusion Layers (GDLs) used in low temperature and high temperature Proton Exchange Membrane (PEM) fuel cells is presented.

TL;DR: In this article, double chamber microbial fuel cells (MFCs) with vanadium containing wastewater as the cathodic electron acceptor were used to reduce V(V) and chromium (VI) together with electricity generation.

TL;DR: In this paper, mesoporous Co 3 O 4 nanowire (NW) arrays are prepared via two-step strategy: precipitating hydroxides followed by calcinating process, and the results show that these arrays deliver a specific capacitance (SC) of 1160 F g −1 at 2

TL;DR: Li et al. as mentioned in this paper introduced a new direction for the performance improvement of rechargeable lithium/sulfur batteries by employing an electrolyte that promotes Li anode passivation in lithium polysulfide solutions.

TL;DR: A supercapacitor based on a novel redox-mediated gel polymer electrolyte (PVA-H 2 SO 4 -P-benzenediol) and activated carbon electrodes is assembled in this article.

TL;DR: In this paper, an overview of the causes and consequences of performance degradation after frequent startup-shutdown cycles is presented, including the use of novel catalyst supports and the application of system strategies to prevent performance degradation in PEMFCs.

TL;DR: In this article, the authors presented highly conductive carbon nanofiber/MnO2 coaxial cables in which individual electrospun carbon nanibers are coated with an ultrathin hierarchical MnO2 layer.

TL;DR: In this article, a finite element model was developed, composed of shell elements representing outside casing, and solid elements for the active material with a binder lumped together with the current collectors and the separator.

TL;DR: In this paper, the authors examined the problem of identifying the physical parameters of fundamental electrochemistry-based battery models from non-invasive voltage/current cycling tests and proposed a genetic algorithm to identify the full set of DFN model parameters from cycling data.