Notice: I will post articles to “FuelCell japan-2” from now on, with some cause.
Fuelcell japan-2: http://fuelcelljapan-2.blogspot.jp/
2012年11月22日木曜日
2012年11月15日木曜日
Study of Polarization Effect and Thermal Stability in Aged Lithium-Ion Battery
Battery Safety 2012 December 6-7, 2012, Las Vegas, NV, USA
Advancements in System Design, Integration & Testing for Safety & Reliability
"Study of Polarization Effect and Thermal Stability in Aged Lithium-Ion Battery"- By Mahmood Tabaddor, PhD, Underwriters Laboratories
Research into the safety performance of lithium-ion cells has increased tremendously in recent years.
Field failures, though rare, may suggest that some failure mechanisms are dependent upon the state of the cell over a period of time, as such rechargeable sources of energy experience many charging and discharging cycles.
UL has hence proposed a project to investigate the safety performance in aged lithium-ion cells.
After a series of study, the polarization effect and the shift in the thermal properties in aged cells are found to be the major causes to safety concerns. >> More
Advancements in System Design, Integration & Testing for Safety & Reliability
"Study of Polarization Effect and Thermal Stability in Aged Lithium-Ion Battery"- By Mahmood Tabaddor, PhD, Underwriters Laboratories
Research into the safety performance of lithium-ion cells has increased tremendously in recent years.
Field failures, though rare, may suggest that some failure mechanisms are dependent upon the state of the cell over a period of time, as such rechargeable sources of energy experience many charging and discharging cycles.
UL has hence proposed a project to investigate the safety performance in aged lithium-ion cells.
After a series of study, the polarization effect and the shift in the thermal properties in aged cells are found to be the major causes to safety concerns. >> More
Large Capacity L-ion Battery Technologies and Market Prospects
A book, entitled “Large Capacity L-ion Battery Technologies and Market Prospects”, has been recently published.
The major points discussed in the book are the following two.
1) The material technology and the battery technology are both described.
2) Market prospects of L-ion batteries for medium- and large-scale applications, including electric cars.
The lithium resource is plentiful in amount. Lithium is dangerous due to its nature of corrosive and explosive, however. It is an urgent desire to improve the technology to extract lithium from seawater containing an infinite amount of lithium particularly in Japan. The all-solid-state L-ion battery, which copes with the explosive, has been developed to a significant level. Further, the current social circumstance demanding use of clean energy requires acceleration of the research and development of the L-ion battery which stores and discharges electrical energy.
The L-ion battery is expanding its market to the market of medium- to large-scale L-ion batteries for automotive and industrial applications.
Vigorous efforts are focused on development of elemental technologies of L-ion battery such as electrodes and electrolyte, and materials used for them. >> More
The major points discussed in the book are the following two.
1) The material technology and the battery technology are both described.
2) Market prospects of L-ion batteries for medium- and large-scale applications, including electric cars.
The lithium resource is plentiful in amount. Lithium is dangerous due to its nature of corrosive and explosive, however. It is an urgent desire to improve the technology to extract lithium from seawater containing an infinite amount of lithium particularly in Japan. The all-solid-state L-ion battery, which copes with the explosive, has been developed to a significant level. Further, the current social circumstance demanding use of clean energy requires acceleration of the research and development of the L-ion battery which stores and discharges electrical energy.
The L-ion battery is expanding its market to the market of medium- to large-scale L-ion batteries for automotive and industrial applications.
Vigorous efforts are focused on development of elemental technologies of L-ion battery such as electrodes and electrolyte, and materials used for them. >> More
2012年11月9日金曜日
"Characterizing Crash Safety of Cylindrical and Pouch Li-ion Batteries using Computational Modeling"
Battery Safety 2012 – December 6 – 7, LasVegas, NV
- Advancements in System Design, Integration & Testing for Safety & Reliability
"Characterizing Crash Safety of Cylindrical and Pouch Li-ion Batteries using Computational Modeling"- By Elham Sahraei, PhD and Tomasz Wierzbicki, PhD, Massachusetts Institute of Technology
Mechanical integrity of Lithium-ion batteries is one of the most important issues on safety of electric cars, but the least studied topic.
As these batteries are not limited to stationary applications anymore, and are being used in vehicle battery packs, this aspect of their safety is more urgent to be characterized and quantified.
The automotive industry has realized that no battery pack could be rigid enough to ensure zero deformation to battery pack in severe enough crash conditions.
In this research, two common form factors of cylindrical and pouch batteries are characterized for several scenarios of deformation applied to these cells.
A comprehensive testing program was used to characterize the material properties of the cells under combined tension and predominantly compression and shear loading.
Then, computational models of the cells were developed.
The models successfully predict load-deformation trajectory and kinematics of the cell under various types of tests.
Additionally, the models are capable of predicting failure in the jelly-roll of the cell, indicating an internal short-circuit under mechanical deformation.
To compare the pouch and cylindrical cells tested in this research, the cylindrical cell tolerated a load of 5,500N and a deformation of about 7 mm before reaching short circuit,
while the pouch cell tolerated a load of 7,500N and a deformation of 3 mm before failure.
Predicting onset of electric short circuit is a necessary condition for possible thermal runaway.
>> More
- Advancements in System Design, Integration & Testing for Safety & Reliability
"Characterizing Crash Safety of Cylindrical and Pouch Li-ion Batteries using Computational Modeling"- By Elham Sahraei, PhD and Tomasz Wierzbicki, PhD, Massachusetts Institute of Technology
Mechanical integrity of Lithium-ion batteries is one of the most important issues on safety of electric cars, but the least studied topic.
As these batteries are not limited to stationary applications anymore, and are being used in vehicle battery packs, this aspect of their safety is more urgent to be characterized and quantified.
The automotive industry has realized that no battery pack could be rigid enough to ensure zero deformation to battery pack in severe enough crash conditions.
In this research, two common form factors of cylindrical and pouch batteries are characterized for several scenarios of deformation applied to these cells.
A comprehensive testing program was used to characterize the material properties of the cells under combined tension and predominantly compression and shear loading.
Then, computational models of the cells were developed.
The models successfully predict load-deformation trajectory and kinematics of the cell under various types of tests.
Additionally, the models are capable of predicting failure in the jelly-roll of the cell, indicating an internal short-circuit under mechanical deformation.
To compare the pouch and cylindrical cells tested in this research, the cylindrical cell tolerated a load of 5,500N and a deformation of about 7 mm before reaching short circuit,
while the pouch cell tolerated a load of 7,500N and a deformation of 3 mm before failure.
Predicting onset of electric short circuit is a necessary condition for possible thermal runaway.
>> More
L-ion battery monitor chip set for automotive-use L-ion batteries
A chip set has been used for monitoring L-ion battery conditions with the intention of securing battery safe and preventing battery performance deterioration. Toshiba is scheduled to commercialize a new chip set for monitoring L-ion battery conditions.
The new chip set is capable of detecting the residual amounts of battery capacities and troubles, and to equalize the capacity residual amounts of L-ion batteries being used.
The chip set = Monitor IC (TB9141FG) + TMPM358FDTFG (micro-controller) >> More
The new chip set is capable of detecting the residual amounts of battery capacities and troubles, and to equalize the capacity residual amounts of L-ion batteries being used.
The chip set = Monitor IC (TB9141FG) + TMPM358FDTFG (micro-controller) >> More
2012年11月8日木曜日
"High Energy Density Lithium Ion Batteries with Hetero-Hybrid Si/Ge-Carbon Nanotube Anodes"
Lithium Battery Power 2012(11) – December 4 – 5, LasVegas, NV
"High Energy Density Lithium Ion Batteries with Hetero-Hybrid Si/Ge-Carbon Nanotube Anodes"
– By Brian J. Landi, PhD, Rochester Institute of Technology
Combined benefits of LPCVD (low pressure chemical vapor deposition ) or PECVD (plasma enhanced chemical vapor deposition) Si with Ge nanoparticles and carbon nanotube has led to an ultra high capacity anode (>1000 mAh/g electrode), along with enhanced coulombic efficiency.
Full batteries incorporating properly matched hetero-hybrid anodes with conventional cathodes shows cell improvements in gravimetric energy density over state-of-the-art by more than 50%
Recent significant innovations within lithium-ion batteries have propelled the technology into a position in the marketplace far exceeding recent market survey results. Breakthroughs in new battery chemistries, novel electrode and electrolyte materials, system integration for a vast array of mobile and portable applications, from micro medical devices to high-energy/high-power automotive, have paved the roadmap for an emerging market with unlimited potential.
* New chemistries & materials to increase energy & decrease cost
* Meeting the EV challenge: cycle life, power & energy, cost and safety
* Advanced materials for improved electrode & electrolyte performance
* Application driven lithium ion battery development
* Advanced technology for greater safety, reliability and performance
* From novel materials and components to systems design and integration
* Role of nanotechnology in improving power and energy density
>> More
"High Energy Density Lithium Ion Batteries with Hetero-Hybrid Si/Ge-Carbon Nanotube Anodes"
– By Brian J. Landi, PhD, Rochester Institute of Technology
Combined benefits of LPCVD (low pressure chemical vapor deposition ) or PECVD (plasma enhanced chemical vapor deposition) Si with Ge nanoparticles and carbon nanotube has led to an ultra high capacity anode (>1000 mAh/g electrode), along with enhanced coulombic efficiency.
Full batteries incorporating properly matched hetero-hybrid anodes with conventional cathodes shows cell improvements in gravimetric energy density over state-of-the-art by more than 50%
Recent significant innovations within lithium-ion batteries have propelled the technology into a position in the marketplace far exceeding recent market survey results. Breakthroughs in new battery chemistries, novel electrode and electrolyte materials, system integration for a vast array of mobile and portable applications, from micro medical devices to high-energy/high-power automotive, have paved the roadmap for an emerging market with unlimited potential.
* New chemistries & materials to increase energy & decrease cost
* Meeting the EV challenge: cycle life, power & energy, cost and safety
* Advanced materials for improved electrode & electrolyte performance
* Application driven lithium ion battery development
* Advanced technology for greater safety, reliability and performance
* From novel materials and components to systems design and integration
* Role of nanotechnology in improving power and energy density
>> More
Current and Prospective Markets of L-ion Battery Negative-Electrode Materials - 2012 market research report
The 2012 market research of the negative-electrode materials of the L-ion battery (LiB) has been reported by Yano research Institute Ltd.
The world LiB market scale in 2011 is just over 1-Cho Yen, and in 2015 it will be two times or larger than that in 2011. The L-ion batteries are expanding their application from small consumer applications to industrial and automotive applications. The 2011 market scale of the L-ion batteries for automotive applications is a little under 1,000 Oku-Yen. The 2015 market scale will reach around 10 times than in 2011. The 2015 market scale of the L-ion batteries for industrial fields will expand to be around 100 times than in 2011. In the LiB negative-electrode material market, focus will be made on the L-ion batteries for the automotive applications. >> More
The world LiB market scale in 2011 is just over 1-Cho Yen, and in 2015 it will be two times or larger than that in 2011. The L-ion batteries are expanding their application from small consumer applications to industrial and automotive applications. The 2011 market scale of the L-ion batteries for automotive applications is a little under 1,000 Oku-Yen. The 2015 market scale will reach around 10 times than in 2011. The 2015 market scale of the L-ion batteries for industrial fields will expand to be around 100 times than in 2011. In the LiB negative-electrode material market, focus will be made on the L-ion batteries for the automotive applications. >> More
2012年11月3日土曜日
Battery Safety 2012, December 6-7, 2012
- Advancements in System Design, Integration & Testing for Safety & Reliability>> More
Widely publicized safety incidents and recalls of lithium-ion batteries have raised legitimate concerns regarding lithium-ion battery safety. Battery Safety 2012 is conveniently timed with Lithium Battery Power 2012, and will address these concerns by exploring the following topics:
* Application specific battery safety issues affecting battery performance
* Major battery degradation and reliability factors
* Battery management systems
* Commercial cells evaluation and failure analysis
* Advances in testing techniques and protocols
* High throughput testing, automation and modeling for better safety
* Standardization and regulatory issues
Participating Organizations to date (related to Japan):
Honda R&D Americas
Kobelco Research Inst., Inc.
Tohoku University
Tosoh USA
Toyo Systems
Toyohashi University of Technology
Distinguished Faculty: Saburo Tanaka, PhD, Toyohashi University of Technology, National University Corporation
Widely publicized safety incidents and recalls of lithium-ion batteries have raised legitimate concerns regarding lithium-ion battery safety. Battery Safety 2012 is conveniently timed with Lithium Battery Power 2012, and will address these concerns by exploring the following topics:
* Application specific battery safety issues affecting battery performance
* Major battery degradation and reliability factors
* Battery management systems
* Commercial cells evaluation and failure analysis
* Advances in testing techniques and protocols
* High throughput testing, automation and modeling for better safety
* Standardization and regulatory issues
Participating Organizations to date (related to Japan):
Honda R&D Americas
Kobelco Research Inst., Inc.
Tohoku University
Tosoh USA
Toyo Systems
Toyohashi University of Technology
Distinguished Faculty: Saburo Tanaka, PhD, Toyohashi University of Technology, National University Corporation
2012年11月2日金曜日
Results for second quarter of 2012 for Clean Energy Patent Growth Index
Clean Energy部門の特許推移 (米国) – 2nd Quarter 2012
* GRANTED patents reach new high
* Toyota remains champ due to fuel cell and hev patents
* Fuel cell, solar and wind patents Jump
* US Leads-JAPAN Tops Others
* California leads states followed by New York
The Clean Energy Patent Growth Index was again at record levels in the second quarter, topping the previous high mark set in the previous quarter.
Wind, Solar, Hybrid/Electric Vehicle, Biomass/Biofuel patents all reached new highs and
Toyota held onto the quarterly Clean Energy patent Crown for the second straight quarter, after an absence since 2009.
The US led all others on the strength of California, New York and Michigan.
Japan led all other countries, followed by Germany.”
Fuel Cells again led the other components of the CEPGI in the second quarter, but Solar technology patents continued to follow on its heels.
Fuel Cells patents were up 32 patents from the first quarter at 264 and were up 59 over a year prior.
Solar patents (188) continued to dominate the remaining components of the CEPGI at 211, up 23 over the previous quarter and up 89 over the second quarter of 2011.
>> More
* GRANTED patents reach new high
* Toyota remains champ due to fuel cell and hev patents
* Fuel cell, solar and wind patents Jump
* US Leads-JAPAN Tops Others
* California leads states followed by New York
The Clean Energy Patent Growth Index was again at record levels in the second quarter, topping the previous high mark set in the previous quarter.
Wind, Solar, Hybrid/Electric Vehicle, Biomass/Biofuel patents all reached new highs and
Toyota held onto the quarterly Clean Energy patent Crown for the second straight quarter, after an absence since 2009.
The US led all others on the strength of California, New York and Michigan.
Japan led all other countries, followed by Germany.”
Fuel Cells again led the other components of the CEPGI in the second quarter, but Solar technology patents continued to follow on its heels.
Fuel Cells patents were up 32 patents from the first quarter at 264 and were up 59 over a year prior.
Solar patents (188) continued to dominate the remaining components of the CEPGI at 211, up 23 over the previous quarter and up 89 over the second quarter of 2011.
>> More
New facility for producing LiB anode material
Bio Hard Carbon Co., Ltd. will build a facility for producing bio hard carbon to be used as the anode material of the lithium ion battery (LiBs). The bio hard carbon is derived from the plant, for example, coconut shell. The company intends to find HV and EV markets. The facility will start its operation in October 2013. The annual production of the bio hard carbon: 1,000 tons. The amount of capital investment: About 30 billion Yen. More >> Please contact us at infonenryo@fcpat-japan.com
2012年11月1日木曜日
Unique Lithium-air battery – Safely and stably operates at high energy density
A unique lithium-air battery has been developed. Its safe and stable operation was confirmed. Large capacity (10000 mAh/g), reversible charge/discharge operations were performed in atmosphere. Such operations had been impossible.
The lithium-air (Li-air) battery developed this is uniquely featured by:
1) Electrolytic solution = ionic liquid, and air electrode = carbon nanotube gel.
2) Gel air electrode has a three-dimensional structure including electron conduction, ion conduction and air-diffusion paths.
The Li-air battery, if realized, would be capable of driving the automobile in long-distance. It has a potential to substitute itself for the hydrogen fuel cell. >> More
The lithium-air (Li-air) battery developed this is uniquely featured by:
1) Electrolytic solution = ionic liquid, and air electrode = carbon nanotube gel.
2) Gel air electrode has a three-dimensional structure including electron conduction, ion conduction and air-diffusion paths.
The Li-air battery, if realized, would be capable of driving the automobile in long-distance. It has a potential to substitute itself for the hydrogen fuel cell. >> More
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