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CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

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Nội dung chi tiết: CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbisn RoadCambridge CB1 2JDTel: 01223 227764Fax: 01223 353 475elementenergyCost and performance of EV batteriesExecutive summaryBackgroundDeep decarbonisa

tion of the road transport sector can only be achieved through the introduction of electrified drivetrains. A key component within an electric vehicle CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

(EV) in terms of overall cost and performance IS the battery.The Committee on Climate Change commissioned Element Energy, Axeon and Prof. Peter Bruce

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

of EastChem to investigate the future trajectory of batteries cost and performance. This report describes the current state of development and cost o

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbisinvestigated through the study of lithium-air batteries, currently the most promising post lithium-ion battery.Current lithium-ion batteries: performa

nceA range of battery chemistries have been deployed in EVs, most notably the use of nickel metal hydride in the Toyota Prius. However energy density CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

has emerged as the most important metric in battery design, leading to lithium family chemistries becoming the dominant chemistry for pure and Plug in

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

Hybrid EV (PHEV) applications.Currently, cells suitable for transport applications typically have an energy density of 100-180Wh/kg. are available at

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbiss cost ca. $400/kWh but the actual cost of the battery system is higher due to the need for electronic and thermal management. The whole battery syste

m including cells, structural support, thermal management and electronic balance. IS called the battery pack. The cost of a battery pack for a pure EV CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

IS approximately $800/kWh, i.e. double the cost of the cells alone.Automotive cells represent only a marginal share (<5%) of the rechargeable lithium

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

-ion cells market The largest market is consumer electronics, such as batteries for laptops and phones. Consumer cells are smaller and have less strin

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis figures do not translate directly to automotive cells because of their more stringent requirements and the engineering challenge of manufacturing lar

ge cells.15 to 25 yearsAutomotive cellsProof of conceptsince proof of concept-$400/kWh Up to 40Ah 100-180Wh/kgToday’s typical lithium-ion cells charac CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

teristics and technology development pathBattery chemistry innovations first appear in the electronic consumer market before trickling down to the mor

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

e demanding automotive market several years later. The time interval between chemistries first being demonstrated in laboratory conditions, and then d

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbisements in performance of automotive batteries are highly unlikely to occur as there are no breakthrough” technologies approaching the consumer market

today.Future lithium-ion batteries: performanceMuch of the current R&D IS on improving the energy density of cells via new chemistries. As well as gre CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

ater vehicle range, increasing energy density has the potential to reduce costs as a result of less material per kWh and fewer cells to monitor. Two r

CCC-battery-cost_-Element-Energy-report_March2012_Finalbis

outes are being pursued to improve energy density: developing electrode materials with higher capacity (mAh/g); or developing cells using higher volta

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

CCC-battery-cost_-Element-Energy-report_March2012_Finalbisapacity anodes (silicon), estimated to be available in a series vehicle ca 2020. Higher voltage cathode chemistries are expected to follow.

elementenergy0 EaStCMEMX /Cost and performance of EV batteriesFinal reportforThe Committee on Climate Change21/03/2012Element Energy Limited20 Station

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