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What is the difference with a traditional micro battery ?
Team develops electroplating method for Li-ion cathode production; high performance and new form factors, functionalities
Researchers at the University of Illinois, Xerion Advanced Battery Corporation and Nanjing University in China have developed a method for electroplating lithium-ion battery cathodes, yielding high-quality, high-performance battery materials that could also enable flexible and solid-state batte...
This website is depressing.
Previous news, published 2 days ago : http://www.greencarcongress.com/2015/10/20151026-gr%C3%B6ger.html
(open-acess review)
"On the Li-sulfur side, it is difficult to achieve the expected gravimetric energy density from a lithium sulfur battery-system. Along with that, the requirements of the automotive industry have also changed over the years, with increased focus on volumetric energy density rather than only gravimetric energy density. The achievable volumetric energy densities for lithium—sulfur batteries, independent of the anode, will always be substantially lower than that of lithium ion batteries, the authors observe"
And then a news like that is published, only describing a nice scientific work, and people in the comment section are already talking about commercialization, 5-5-5 goals... You really think that this paper does change something ? Use of silicium, sulfur, graphene, the worst materials for volumetric densities, change anything in terms of energy densities ? Warping silicium in polymer increases energy densities ?
And it is like that all the time. It will be the same for the next Si-graphene-ionic-liquid-nano-sulfur-whatever-battery, with excellent cycle life obviously. When are you going to understand that scientific work is only scientific ? They don't even use relevant metrics (mAh/g ?) for pratical applications.
(Don't get me wrong, this is a really good work in terms of material science.)
U Waterloo, GM R&D team develops new very high-performance silicon-sulfur-graphene electrode for Li-ion batteries
Researchers from the University of Waterloo and General Motors Global Research and Development Center have developed a new electrode material for Li-ion batteries that leverages the strong covalent interactions that occur between silicon, sulfur, defects and nitrogen. In an open-access paper in ...
Also, there are way too many scientific publications. Some blogs take their generic sentences, like "to the point that the battery is now considered to be near to industrial production", way too seriously.
Metrics used in scientific publications are often not even relevent for industrial applications... mAh/g ? amazing, but in your lab you avec so few mg/battery that there are no links to real application.
LISSEN researchers develop energy-dense Li-metal free Li-sulfur battery; Volkswagen the automotive partner
EU-funded researchers in the €3.7-million (US$4.2-million) LISSEN (Lithium Sulfur Superbattery Exploiting Nanotechnology) project have developed a new energy-dense lithium-sulfur battery using a new lithium metal-free battery configuration based on the use of lithiated silicon as the anode and ...
The article cited here is a review, which means that they did not do anything but reviewed the previous work made by others. I don't see any report claimed in this article in the sources.
Problems with all the Si and sulfur based batteries is 1/ cyclability in full cell (i.e. not vs. lithium) and 2/ volumetric energy density (expansion more than 200%, porous electrode needed...). If you do Si-Li-S battery, you have both of them. I will just cite the article cited here :
"However, regardless of the way of introduction of lithium ions into the system, the reported full-cells – Li–Si/S–C72b and Si/Li2S–C73a – showed relatively low specific capacities (e.g., a first discharge capacity of 423 mA gLi2S at a specific current of 389 mA g1 ) as well as a constant and rather rapid capacity fading after 20 cycles."
If you talk with project managers in auto industry (nissan, bmw, vw), they don't expect to use sulfur as batteries because at the moment you don't gain any energy density compared to optimized Li-ion systems. Newt generation batteries will be all-solid-state (for safety, and maybe the use of lithium metal) and silicium-Ni/Mn-rich batteries, which will be benefit from the work made on current Li-ion.
LISSEN researchers develop energy-dense Li-metal free Li-sulfur battery; Volkswagen the automotive partner
EU-funded researchers in the €3.7-million (US$4.2-million) LISSEN (Lithium Sulfur Superbattery Exploiting Nanotechnology) project have developed a new energy-dense lithium-sulfur battery using a new lithium metal-free battery configuration based on the use of lithiated silicon as the anode and ...
Interesting paper. No data about thermal stability (critical issue for nano) and volumetric density (how do you make thicker electrodes ?), so I guess you guys can continue talking about commercialization for a long long time...
Hybrid cellular nanosheets show promise as basis for high performance anodes for Li-ion batteries
Researchers in S. Korea have developed a simple synthetic method for producing carbon-based hybrid cellular nanosheets that exhibit strong electrochemical performance for many key aspects of high-performance lithium-ion battery anodes. The nanosheets consist of close-packed cubic cavity cells pa...
Should work with LFP, but it does not increase cycle life (see Fig5 in the paper). Problems with nanosized structures are their long-term stability, and their thermal stability (never discussed in any paper).
New Samsung silicon anode with graphene boosts volumetric capacity of LiCoO2 Li-ion cell 1.5x after 200 cycles; gravimetric capacity the same
A team at Samsung Advanced Institue of Technology (SAIT, Samsung’s global R&D hub) reports in an open access paper published in the journal Nature Communications on a new approach to advance high-capacity silicon (Si) anodes for Li-ion batteries (LIBs) to commercial viability, with a particular ...
LiNO3 has been used for like forever in lithium-sulfur batteries for its well-known passivation of lithium metal, and these guys just do a nature coms on it today... As if it was a big news.
(and magnesium metal does not form dendrites...)
Researchers find synergy between lithium polysulfide and lithium nitrate as electrolyte additives prevent dendrite growth on Li metal anodes
Researchers from SLAC and Stanford led by Prof. Yi Cui, with Prof. Yet-Min Chiang (a co-founder of A123 Systems) at MIT, have discovered that a synergetic effect resulting from the addition of both lithium polysulfide and lithium nitrate to ether-based electrolyte prevents dendrite growth on Li...
Regarding battery research, a lot is funded by private companies such as car manufacturers or chemical producer. I have never been more free to do research than when I was funded by a private company actually, so it is not that easy.
I still believe that comparison with moore's law, a-bomb or other technologies are very misleading. One has to look at into details to anticipate what will be the leading technology in the battery market. Oversimplifying is not always that good.
Toyota Research team reports significant advance in electrolytes for high-energy Mg batteries
A team at Toyota Research Institute of North America (TRINA) reports a critical advance in the the development of electrolytes for magnesium (Mg) batteries in the journal Angewandte Chemie. The researchers, led by Dr. Rana Mohtadi, Principal Scientist at TRINA, developed an electrolyte based on ...
These comparisons made very often here and there are very misleading. First because there is no point of comparison between making a battery and putting a guy on the moon (some challenges that could appear way "easier", because less fancy ?, than getting on the moon have been unsolved for decades).
But also because, industrial work is not comparable with very specialized work. Put one man on the moon, at any cost, is something. Develop an industrially viable device - especially for mass production - is something totally different.
Toyota Research team reports significant advance in electrolytes for high-energy Mg batteries
A team at Toyota Research Institute of North America (TRINA) reports a critical advance in the the development of electrolytes for magnesium (Mg) batteries in the journal Angewandte Chemie. The researchers, led by Dr. Rana Mohtadi, Principal Scientist at TRINA, developed an electrolyte based on ...
@Sublime voltage (around 1.5-3.5V) and energy densities are pretty low, but the article is a proof of concept. I don't think they aim any commercialization of the system.
University of Maryland team creates solid-state Li-ion battery out of one material
UMD Engineers made a battery of all one material simply by sprinkling carbon (red) into each side of a new material (blue) that forms the electrolyte and both electrodes at the ends of the battery. Credit: Maryland NanoCenter Click to enlarge. Engineers at the University of Maryland have cr...
I agree with the last comment, I have seen many Eos presentations and they only show results from a small prototype. 160¤/kWh is only based on assumptions.
Generally, estimations of battery costs are very very difficult to analyse. In the case of li-ion batteries, research have totally under-estimated the capabilities of market-leading manufacturers (Nissan, Tesla...) to reduce costs, as shown in this recent paper (sorry if you don't have access) : http://www.nature.com/nclimate/journal/v5/n4/full/nclimate2564.html
As it has been said above, major breakthroughs at the pack level are today coming from process. It cannot be easily taken into consideration since manufacturers do not communicate about it.
Lux Research: Li-ion battery costs to drop to as low as $172/kWh by 2025; big boost for EVs in mid- to late 2020s
The electric vehicle opportunity is set to expand, as leading battery developers such as Panasonic drive down prices of Li-ion battery packs by 35% to $172/kWh in 2025, according to a new report, “Crossing the Line: Li-ion Battery Cost Reduction and Its Effect on Vehicles and Stationary Storage...
It's 44Wh/kg in the article. They are comparing to all-solid LCO/LTO.
"The respective first discharge capacities of the SE-NW-SE and pNW-SE-pNW LCO/LTO cells, 85 and 89 mA h gLCO–1, translate to energy density values of 42 and 44 Wh kgcell–1. Figure 4e shows the cell energy density of all-solid-state cells as a function of the overall weight fraction of SE. The energy density obtained in this work (44 Wh kgcell–1) is still much lower than that (100–200 Wh kgcell–1) of commercialized LIBs(52) and also some conventional ASLB adopting high-capacity electrode materials such as sulfur (e.g., ∼150 Wh kgcell–1 assuming that Li metal can be used.). It should be noted, however, that by applying the bendable and thin NW-SE film, the energy density of the LCO/LTO ASLB was almost three times higher than that of the conventional ASLB (15 Wh kgcell–1) that does not contain NW. "
New bendable and thin sulfide solid electrolyte films enable higher performance solid-state Li-ion batteries
Schematic diagram of new cell. Credit: ACS, Nam et al. Click to enlarge. Researchers in South Korea have developed free-standing and stackable all-solid-state lithium batteries (ASLBs) with high energy density and high rate capabilities. A paper on their work is published in the ACS journal ...
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May 3, 2015
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