Nissan Working on New Battery to Double the Leaf's Range by

[ruimegas]

Nissan Working on New Battery to Double the Leaf's Range by 2015

É disto que o "meu povo" gosta



"The Key is a Lithium Nickel Manganese Cobalt Oxide Cathode
I'm starting to think that electric car buyers will suffer from the same problem as buyers of consumer electronics: It seems like something better is always around the corner, so why buy now? The Nissan Leaf EV isn't even on the market yet that its technology is starting to sound passé. The Nikkei (reg required) reports that Nissan is almost done working on a new battery cell design that could almost double the range of the Leaf, and of other future Nissan electric cars.



Should Cost About Same as Conventional Lithium-Ion
This is exciting news, and I'm glad to see that Nissan didn't just dip its toe in the EV world but is actually putting some serious resources into R&D. Few things can have a bigger impact on the electrification of transportation than fast progress in battery technology.

Nissan is raising capacity by improving the positive electrode, specifically, using nickel and cobalt, not only manganese. The new battery can store about twice as much electricity as batteries with positive electrodes made only from manganese. It is robust enough for practical use, able to withstand 1,000 or so charge cycles.
Nissan estimates that the battery will cost about the same as conventional lithium ion ones to produce, as it contains only a small amount of cobalt, a relatively expensive metal."

Em: http://www.treehugger.com/files/2009/12 ... c-cars.php

[ruimegas]

"The Nikkei reports that Nissan Motor Co. has nearly completed development of a lithium-ion battery using a lithium nickel manganese cobalt oxide cathode (NMC). The new system, which will reportedly offer almost double the capacity of Nissan/AESC’s current manganese spinel cell, is supposedly slated for deployment in electric vehicles in 2015.

Nissan is raising capacity by improving the positive electrode, specifically, using nickel and cobalt, not only manganese. The new battery can store about twice as much electricity as batteries with positive electrodes made only from manganese. It is robust enough for practical use, able to withstand 1,000 or so charge cycles.

Nissan estimates that the battery will cost about the same as conventional lithium ion ones to produce, as it contains only a small amount of cobalt, a relatively expensive metal.

Nickel Manganese Cobalt oxide materials have attracted a great deal of interest due to the potential higher capacity. As one example, Argonne Labs in the US has done quite a bit of work with the NMC family over the past years, and has licensed some of its formulations to Toda Kyogo in Japan in 2008 (earlier post) and to BASF (earlier post).

In some formulations, the Argonne NMC materials can provide an initial capacity of > 250 mAh g-1 when discharged between 5 and 2.0V and a rechargeable capacity of up to 250 mAh g-1 over the same window. By contrast, the practical capacity of conventional cobalt oxide electrodes is approximately 140 mAh g-1. Spinel LiMn2O4 and olivine LiFePO4, while more thermally and structurally stable than the cobalt oxides, deliver relatively low practical capacities above 3V in a lithium cell—typically 100-120 mAh g-1.

In another partnership deal announced earlier this year, 3M entered into a strategic relationship and an agreement with China-based Amperex Technologies Ltd. (ATL) that will expand the use of nickel-manganese-cobalt (NMC) cathode materials in lithium-ion batteries targeted at consumer electronics and automotive applications. (Earlier post.)

Other companies working with NMC materials include Panasonic, Sanyo, Hitachi, GS Yuasa, Samsung, EnerDel, Kokam, Evonik/Litarion, Enax, and Imara."

Em: http://www.greencarcongress.com/2009/11 ... 91129.html

[ruimegas]

"Nissan to double electric car power: report
(AFP) – Nov 28, 2009
TOKYO — Japan's Nissan Motor Co. is working on a lithium-ion battery that can power an electric vehicle for 300 kilometres (190 miles) on a single charge, the business daily Nikkei said Sunday.
The distance is nearly double the 160-kilometre range of the Leaf, Nissan's first all-electric car set to go on sale in late 2010 in Japan, the United States and Europe.
Nissan, Japan's third largest automaker, aims to produce electric cars incorporating the new battery by 2015, according to Nikkei.
Nissan plans to boost the capacity of the lithium-ion battery's positive electrode by adding nickel and cobalt to its main material, manganese, it said.
The enhanced battery can store about twice as much electricity as batteries with positive electrodes made only from manganese.
It is robust enough for practical use, able to withstand about 1,000 charge cycles, the daily said.
The company estimates that the battery will cost about the same as conventional lithium-ion ones to produce, as it contains only a small amount of expensive cobalt.
Ahead of last month's Tokyo Motor Show, Nissan chief executive Carlos Ghosn said his company aimed to make rechargeable batteries for electric cars a "core business" as he predicted a bright future for zero-emission vehicles."

Em: http://www.google.com/hostednews/afp/ar ... waWPB-xIhg

[Essiemme]

Por isso é que esta época é histórica no que diz respeito à revolução da mobilidade e do mundo automóvel.

A partir do presente, vamos assistir a muitas novidades... coisa que está a ser aliciante, pena que ainda haja alguns que "passam ao lado" desta revolução.

[RJSC]

1000 ciclos, vai dar para 300000 km, parece que vai chegar até as pessoas se fartarem do carro, mas agora os adeptos do V2G (também conhecido por mim como "mata baterias") que se cuidem.

[Essiemme]

1000 ciclos, vai dar para 300000 km, parece que vai chegar até as pessoas se fartarem do carro, mas agora os adeptos do V2G (também conhecido por mim como "mata baterias") que se cuidem.

...é claro que os 300 mil são para as condições ideais mas, mesmo assim, não deixa de ser um número impressionante, em termos de avanço.