Category: Battery News

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Next Generation Nissan Leaf to get 300 km range and new look

The next-generation Nissan Leaf will boast a more conventional hatchback look and an improved 300 km driving range, according to a report from Auto Express.

Nissan bosses are promising new battery technology is on the way, with better energy density for a more usable pure electric vehicle. A figure of about 186 miles (300 kilometres) is likely to be the target.

There’s a good chance Nissan will offer smaller battery packs with less range, like Tesla does with its 60kWh and 85kWh packs. The new battery technology and motor will be shared with Nissan’s luxury brand, Infiniti, too.

Source: AutoExpress

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Ultracapacitors to be used for braking energy recuperation in Spanish rail system

Maxwell Technologies, Inc has announced that Win Inertia, an engineering firm specializing in power electronics, energy storage and control and communication systems, is using its ultracapacitors for a stationary wayside braking energy recuperation system at an electric rail system in Cerro Negro, Spain. Win Inertia designed and installed the system under a contract with the Spanish government's Administrator of Railway Infrastructures (ADIF). In this installation, the system also enables ADIF to store excess energy in a battery bank that supplies an electric vehicle (EV) charging station located at the rail station. The facility also seamlessly integrated a photovoltaic (PV) generator to supply additional energy if required.

The recuperation system employs Win Inertia's SHAD® hybrid control technology (international patent pending) to integrate batteries and Maxwell ultracapacitors to increase energy recovery efficiency and reduce stress on the batteries, thereby extending battery life. Ultracapacitors' rapid charge/discharge characteristics uniquely enable them to capture and store more energy during each braking event than battery-based systems, which have limited ability to absorb energy in the few seconds required to stop a vehicle. Win Inertia's high-efficiency hybrid energy storage and power delivery system furthers ADIF's return on investment as it enables dual use of the recuperated energy for rail vehicle propulsion and EV charging. By converting kinetic energy into stored electric energy through regenerative braking, the system recovers 8 to 10 percent of the total energy used by the railway system, which is then used to power the EV charging station.

"By incorporating ultracapacitors, which accept charge from the braking energy recuperation system much more efficiently than batteries, the system recovers significantly more energy," said Eugenio Domínguez Amarillo, Win Inertia's CEO and chief technology officer. "Additionally, by using ultracapacitors to relieve the batteries of the stress of repetitive cycling, we expect to extend battery life by 20 to 25 percent."

Braking energy recuperation systems in electric and hybrid rail vehicles save fuel and electrical energy by using resistance from the electric motor to stop the vehicle, and, through that process, converting kinetic energy that would be wasted in a conventional friction-based braking system into stored electrical energy. Ultracapacitors' high reliability and extremely long operational life also make them a preferred option for heavy cycling electric utility grid applications.

Dr. Franz Fink, Maxwell's president and CEO, said, "Transportation is the world's largest energy consumer, so systems that enhance energy efficiency and reduce fossil fuel consumption and emissions can play a transformational role in energy management and create tremendous long-term growth opportunities for rapidly advancing ultracapacitor technology."

Unlike batteries, which produce and store energy by means of a chemical reaction, ultracapacitors store energy in an electric field. This electrostatic energy storage mechanism enables ultracapacitors to charge and discharge in as little as fractions of a second, perform normally over a broad temperature range (-40°C to +65°C), operate reliably through one million or more charge/discharge cycles and resist shock and vibration. Maxwell offers ultracapacitor cells ranging in capacitance from one to 3,000 farads and multi-cell modules ranging from 16 to 160 volts.

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LG Chem wins battery order from Audi for plug-in hybrid cars [VIDEO]

South Korea's LG Chem said on Wednesday it had won an order from Audi to supply batteries for its plug-in hybrid and micro hybrid electric vehicles.

LG Chem said the deal was "worth hundreds of millions of dollars" but declined to give further details. It said it expected to win more such orders from Audi parent Volkswagen in the future.

LG Chem, which has secured a total of 20 customers including General Motors, also it aims to achieve combined sales of over $10 billion from large-sized batteries by 2018.

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LG Chem signs battery deal with Volkswagen [VIDEO]

LG Chem has agreed to supply electric-vehicle batteries to Volkswagen, a company executive said Tuesday.

"Volkswagen has designated LG Chem as one of its key battery-sourcing channels to push its electric car projects," the executive said by telephone on condition of anonymity, citing the sensitivity of the issue. "LG is going to supply battery packs and solutions to the German carmaker."

The deal with Volkswagen is not as big as similar deals between LG and other leading carmakers such as General Motors and Ford, said the executive.

The partnership also involves collaboration on various products the German car manufacturer is working to develop as part of its electric-vehicle projects, part of its efforts to reduce carbon emissions.

For example, Volkswagen is working to attain "ultra-low-carbon mobility" for its new eGolf electric vehicle, said officials.

The vehicle is a fully electric version of Volkswagen's popular Golf.

"LG Chem will join futuristic electric car business projects such as [projects to develop] plug-in hybrid electric vehicles led by the German carmaker thanks to the latest battery deal," said the official.

An LG Chem spokesman declined to confirm.

LG Chem has been in talks with Volkswagen over the past four years regarding a business partnership involving batteries for electric vehicles.

The executive said it was Beijing's approval to proceed with LG's plans to build a battery joint venture in China that helped the LG Group affiliate land the partnership with Volkswagen.

Volkswagen plans to spend more than $2 billion on models and on two new facilities in China, increasing total investments in the world's biggest auto market to nearly $8 billion.

LG Chem Chief Financial Officer Cho Suk-jeh told investors and analysts that the company aimed to generate nearly 2 trillion won in revenue from its large battery business, including energy systems, by 2016.

The petrochemical business is the biggest cash cow for LG Chem, accounting for 77 percent of its 5.87 trillion won in sales in the second quarter. Batteries accounted for 12.3 percent and electronic information materials 12.1 percent.

LG Chem is gradually cutting its reliance on petrochemical products as part of an effort to diversify its revenue sources.

On a related note, in 2016 the company plans to begin providing carmakers with batteries capable of powering electric vehicles for at least 200 miles (322 kilometers).

LG Chem currently supplies lithium-ion batteries to General Motors, Ford, Hyundai-Kia, Renault, Volvo, and other carmakers. The 200-mile-plus range of the new batteries is roughly double that of the company's current, first-generation electric-vehicle batteries.

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New Rechargeable Cell Has 7x Higher Energy Density Than Li-ion Cells

A Japanese research group developed a rechargeable battery based on a new principle in cooperation with Nippon Shokubai Co Ltd.

The group is led by Noritaka Mizuno, professor at the School of Engineering, the University of Tokyo. The new battery uses the oxidation-reduction reaction between oxide ions and peroxide ions at the positive electrode. The group proved that peroxides are generated and dispersed due to charge and discharge reactions by using a material made by adding cobalt (Co) to the crystal structure of lithium oxide (Li2O) for the positive electrode, verifying a battery system based on a new principle.

The new technology can realize an energy density seven times higher than that of existing lithium (Li)-ion rechargeable batteries, increase capacity, lower price and enhance safety. It is expected to be used for batteries for electric vehicles (EVs) and next-generation stationary batteries.

The oxidation-reduction reaction between Li2O and Li2O2 (lithium peroxide) and oxidation-reduction reaction of metal Li are used at the positive and negative electrodes, respectively, of the new battery. The battery has a theoretical capacity of 897mAh per 1g of the positive/negative electrode active material, voltage of 2.87V and theoretical energy density of 2,570Wh/kg.

At that time, the energy density is 370Wh per 1kg of the positive/negative electrode active material, which is about seven times higher than that of existing Li-ion rechargeable batteries using LiCoO2 positive electrodes and graphite negative electrodes. The theoretical energy density of the new battery is lower than that of lithium-air batteries (3,460Wh/kg). But it has a sealed structure like conventional Li-ion batteries, realizing a high reliability and safety.

This time, as the positive electrode material, the research group used a material made by using a planetary ball mill to add Co to the crystal structure of LiO2. And the group proved that it is possible to realize a battery system in which the oxidation-reduction reaction between oxides and peroxides reversibly proceeds. And it proved that (1) peroxides are generated in the positive electrode for charge, (2) the peroxides are dispersed for discharge and (3) those reactions are repeated, by quantitatively analyzing the peroxides.

The group also proved that neither O2 nor CO2 is generated in the range where it is possible to reversibly charge/discharge the battery.

The positive electrode used in the demonstration test enables to repeatedly charge/discharge the battery with a capacity of 200mAh/g and to quickly charge/discharge the battery with a large current. The positive electrode has a smaller mass ratio of Co than LiCoO2, which is used for existing Li-ion batteries, and possibly lowers costs.

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Tesla Gigafactory deal confirmed – Panasonic to invest up to $1Billion

Panasonic has reached a basic agreement with Tesla Motors to participate in the Gigafactory, the huge battery plant that the American electric vehicle manufacturer plans to build in the U.S.

Tesla aims to begin the first phase of construction this fiscal year. The plant would start making lithium-ion cells for Tesla cars in 2017. The automaker is shouldering the cost for the land and buildings.

Panasonic likely will invest 20 billion to 30 billion yen ($194-291 million) initially, taking responsibility for equipping the factory with the machinery to make the battery cells. An official announcement on the partnership will come by the end of this month.

Capacity at the Gigafactory will be added in stages to match demand, with the goal of producing enough battery cells in 2020 to equip 500,000 electric vehicles a year.

The total investment is expected to reach up to $5 billion, and Panasonic's share could reach $1 billion.

The Japanese company owns a stake in Tesla and currently makes the batteries for Tesla cars. In a contract reworked in October 2013, the two agreed that Panasonic would supply Tesla with 2 billion battery cells between 2014 and 2017.

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Panasonic to invest $200-300 million in Tesla battery plant

Panasonic Corp plans to initially invest about 20 billion to 30 billion yen ($200-300 million) in Tesla Motors Inc's planned lithium-ion battery plant in the United States, a person familiar with the matter said on Tuesday.

The Japanese company, which already supplies batteries for the electric vehicle maker, will ultimately invest about $1 billion in the planned $5 billion battery "Gigafactory", the person said.

The figures for Panasonic's investments were first reported by the Nikkei business daily earlier on Tuesday.

A Panasonic spokesman declined to confirm the investment figures, saying that while the company has signed a letter of intent to participate in the Tesla battery project and was in talks on the matter, no concrete decisions had been made.

A basic agreement on cooperation on the project between the two companies is due to be announced by the end of this week, with both due to report quarterly earnings results on Thursday, although no investment figures will be disclosed, the person said.

A Tesla spokesman, asked about the Nikkei report, declined to comment on "speculation regarding Panasonic".

Tesla is looking at three sites in the United States to build the Gigafactory plants which by 2020 would be able to make more lithium-ion batteries in a year than were produced worldwide in 2013.

Panasonic said in May it wanted to be the sole battery cell maker at the battery facility.

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GM and LG working on Tesla Model 3 competitor with 200 mile range

LG Chem CFO Cho Suk-jeh has revealed the company will supply an automaker with a battery that will allow one of their models to travel more than 200 miles (320 km) on a single charge. Suk-jeh declined to say which automaker will use the battery but all indications are pointing to General Motors.

General Motors executives have said that the automaker is working on an EV that will deliver at least 200 miles of range. The automaker, manufacturer of the Chevrolet Volt, has said it hopes to have the longer-range EV in the market in 2016 to compete with the anticipated Tesla Model III, now scheduled for introduction in late 2016 or early 2017.

LG Chem presently supplies lithium-ion batteries to GM, Ford, Hyundai, Kia, Volvo and Renault, among others.

Doug Parks, GM’s vice president for product development, said in an interview last year that General Motors plans to offer an EV with at least 200 miles of range for a price of around $30,000. That's the target all the major automakers are aiming at for their next-generation electric vehicles, he said.

GM invested $7 million in Battery Start-up Envia Systems in 2011. Unfortunatley the promised 'world record' 400 Watt-­‐ hours/kilogram (Wh/kg) energy density only lasted a few cycles leaving GM to search for more legitimate battery technology partners.

General Motors and LG Group agreed in 2011 to jointly design and engineer future electric vehicles, expanding a relationship built on LG’s work as the battery cell supplier for the Chevrolet Volt and Opel Ampera extended-range EVs.

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LG Chem targets EV batteries with range of more than 200 miles in 2016

South Korean supplier LG Chem plans to supply batteries for electric vehicles that can travel more than 200 miles, or 321 kilometers, per charge in 2016, its CFO said on Friday.

The CFO, Cho Suk-jeh, did not elaborate on which automakers will use the so-called second-generation batteries.

LG Chem currently supplies batteries for General Motors, Renault SA and other automakers.

GM's former CEO, Dan Akerson, said last year the U.S. automaker, which currently sells the Chevrolet Volt and Cadillac ELR hybrids, was working on new electric vehicles, including one with a 200-mile driving range.

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Redox Ultrabattery achieves high energy and power capacity

Researchers have tested a unique combination of hybrid supercapacitor-battery materials that combines fast electrochemical charge times with the high energy density of a li-ion battery.

Li-ion batteries with high specific energy, high power density, long cycle life and low cost are critical for widespread adoption of electric vehicles. A key bottleneck in achieving this goal is the limited fast charging ability of Li-ion Batteries. Rapid charging causes accelerated degradation of the battery as well as a potential fire hazard due to local over-potential build-up and increased heat generation. Li-ion Batteries have the highest energy density but typically suffer from low power density.

On the other extreme, electrochemical double-layer supercapacitors, which store energy through accumulation of ions on the electrode surface, have low energy storage capacity but very high power density.

A special category of electrochemical capacitors is provided by redox capacitors. Here, charge is stored through surface or bulk (pseudocapacitive) redox reactions, similar to Li-ion Batteries, yet, with a very fast charge transfer response, similar to electrochemical double-layer capacitors. Although excellent capacity retention for extended cycling can be obtained even at high charge - discharge rates, specific capacity of redox capacitors is typically lower than for Li-ion batteries.

The most intuitive approach to combine high energy and high power density within a single device is to combine the different types of energy storage sources. So far, mainly hybridization between electrochemical double-layer capacitors and Li-ion batteries has been explored. The primary drawback of this approach is that power and energy performances are decoupled. At high current densities, the response is dominated by the electrochemical double-layer capacitor component, considerably diminishing the energy density of the hybrid device.

Researchers have now shown that enhanced battery-capacitor hybrids can be constructed by careful choice of the super-capacitor and battery components. They combined a lithium iron phosphate (LiFePO4) battery material with poly (PTMA) redox capacitor. The PTMA and LiFePO4 hybrid ultra-battery gives best-of-both-worlds performance characteristics: high energy and power capacity as well as fast and stable recharge for more than 1,500 cycles.

In addition to improved cycling and rate performances, the hybrid electrode features a unique fast charge storage mechanism. When a charge current is applied on the hybrid electrode, the polarization of PTMA and LiFePO4 overlap above the equilibrium values and both components are charged (or, oxidized). However, the faster redox kinetics of PTMA results in excess charging of the PTMA component.

When the current supply is stopped, the potential of both components in the electrode tends to reach their equilibrium open circuit potential. However, the electrochemical potential of the PTMA is higher than that of LiFePO4. According to the first law of thermodynamics the overall state-of-charge (SOC) of the electrode will remain unchanged, mainly the PTMA/LiFePO4 charged species ratio will change.

The hybridization of the two separate components yields a remarkable set of properties. The appropriate redox couples, flat-potential profile and elevated specific capacity yet, different redox kinetics for PTMA and LiFePO4, offer a hybrid battery electrode where the fast electrochemical response of PTMA delays the voltage rise during the charge process. This implies significant improvements for the rate performance, cycle lifetime and safety of lithium-ion batteries during rapid recharge.

This novel approach paves the way to new design rules for Li-ion battery electrodes and may prove pivotal in pushing the performance envelope of Li-ion batteries towards the goal of increasing adoption of electric vehicles.

Source: Nature