FYI
From: Colin Humphreys
[mailto:cjh1001@hermes.cam.ac.uk] On Behalf Of Colin Humphreys
Sent: Thursday, March 21, 2019 9:48 PM
To: Hemen Parekh; Ivor Guiney
Cc: Hemen Parekh
Subject: Re: THIS IS NOT AN ELECTION ISSUE : ONLY MORE IMPORTANT !
Dear Hemen,
Many thanks.
Congratulations on your vision! Keep up your blogs!
Best regards, Colin
Sent from my BlackBerry —
the most secure mobile device — via the O2 Network
From:
hcp@recruitguru.com
Sent: 21 March 2019
05:03
To:
colin.humphreys@msm.cam.ac.uk; ig306@cam.ac.uk
Cc:
hcp@recruitguru.com
Subject: FW: THIS IS NOT
AN ELECTION ISSUE : ONLY MORE IMPORTANT !
|
Dear Dr Humphreys,
Thought you might like my following blog
/ email to India’s Policy Makers and Auto Industry executives
I would appreciate your comments, if any
With regards,
hemen
From:
Hemen Parekh [mailto:hcp@recruitguru.com]
Sent: Thursday, March 21, 2019 10:21 AM
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Subject: THIS IS NOT AN ELECTION ISSUE : ONLY MORE IMPORTANT !
Someday ( hopefully, soon ) ,
Graphene will accelerate the adoption of Electric Vehicles, through :
# Reducing
the weight of a car from 1300 kg to 650 kg
# Thereby,
reducing the Li-ion Battery size by 50 %
# Therefore
, reducing the selling price by 50 %
# Increasing
Solar Panel efficiency from 20 % to 80 %
# Mounting
solar
panels on car roof-tops to charge small battery
# Thereby
eliminating
need for roadside battery charging stations
For the rest, read :
E – Car Extrapolation
: a Wishful Thinking ?
What extrapolation ?
# Can weight
of an E Car be reduced by 50 % ? And, if yes , can the Lithium-ion
Battery capacity also get
reduced
by 50 % ?
Eg :
Can weight of Mahindra e-Verito [ D6 ], be reduced from 1265 kg to 650 kg – leading to its battery
size going
down from 21.5 KWh to 10 KWh ?
[ e-Verito , most likely uses 840 kg of steel and 130
kg of aluminum ]
But, how would that help ?
#
Cost of Lithium-ion Battery is said to be 40 % of the cost of an E Car
# E-Verito sells for Rs
13 lakh . That means, its 21.5 KWh battery might have a landed cost of Rs 5.2
lakh
# If the battery size
becomes 10 KWh , could its landed cost become Rs 2.6 lakh ?
But aren’t
Lithium-ion Battery prices dropping anyway, year after year ?
# Very much so . By end
of 2019, battery prices are expected to come down to $ 100 / KWh
# Hence , a 21.5 KWh
battery’s international price could come down to $ 2,150
# After 40.8 % duty ,
that could mean a landed cost of $ 3,000 ( Rs 2.10 Lakh )
# And the landed cost of
a 9 KWh battery could be only $ 1,500 ( Rs 1.05 Lakh )
!
According to the survey
of EnergyTrend, the average price of lithium-ion batteries in each electric
passenger car is currently about US$15,000, and is expected to fall below
US$10,000 in 2020
Hey , Sounds incredible !
But is there a direct relation between the “ Car Weight “ and “ Battery Size “ ?
Can a 10 KWh battery suffice if
e-Verito’s weight gets reduced to 650 Kg ?
# Here are some examples
of empirical extrapolation ( of a layman , no doubt ! )
# Ather 450 Electric Motorbike
weighs 118 kg and carries a Lithium-ion
battery of 1.92 KWh
Add 2 passengers ( 2 x 75 = 150 kg ) , taking the laden weight to 268 kg
And this :
Mahindra Treo ( 3
Wheeler ) weighs 340 kg and carries a Lithium-ion battery of 7.37 Kwh
Add
4 passengers ( 4 x 75 = 300 kg ) , taking the laden weight to 640 Kg !
But wait ! e-Verito
has to carry 4 passengers ( incl driver ) – adding 300 kg of weight to 650 kg of car !
That adds up to a laden
weight of 950
Kg .
#
It is like adding up the weights and the battery sizes of the above-mentioned [
2 Wheeler + 3 Wheeler ] . Quite
probable
!
OK, fine ! but how can we
bring down the weight of e-Verito from 1265 Kg to 650 Kg ?
#
By replacing Steel used in car , with Graphene
What is Graphene ?
#
It is a transparent layer of carbon wafer , just one atom thick
How is that important ?
#
Graphene is 200 times stronger than steel
and 10 times better at conducting heat
than copper
#
Graphene-based chips could deliver speeds more than ten times faster than silicon chips
# In
chemical and electrical sensors, graphene could increase sensitivity by a factor of more
than 30
#
If we replaced the silicon chips in today’s transistors with graphene-based
chips, we could increase the speed of
electronic devices ten-fold. ( FIRST GRAPHENE-BASED DEVICE IS A “FEW MONTHS” AWAY, SAYS
STARTUP )
Is this wonder material
Graphene , commercially available ?
#
A start up called “ Paragraf “ is expected to launch Graphene
wafers , very soon
Then why do you say
, “ Wishful Thinking “ ?
# Being 200 TIMES stronger than Steel, without doubt Graphene can
cut down the weight of a car manifolds.
But to begin with,
it might cost 2000 TIMES the
price of steel , thereby precluding its use
# But ( - and again without
doubt ), it is bound to become economically viable replacement as steel prices
continue to rise
and further breakthrough in the manufacturing processes of Graphene ,
dramatically lowers its
cost .
# Even car components will get
made by using Graphene in 3 D printing process
Do you think any of our
Policy Makers would ask our scientists / engineers to examine this ?
I have no doubt that
should Shri Nitin Gadkariji get to read this blog ( - being sent to him as an
email ) , then he will waste no time to do so
He might ask ISRO :
“ Can you develop Solar
Panels using Graphene to boost its efficiency manifolds ( say from current 20 %
to 80 % ) – then install such a Solar Panel on roof-top of an Electric Car , to
continuously charge its Lithium-ion battery, so that E cars do not need any
road-side Battery Charging Stations , saving an investment of Rs 175 lakh*crore
? “
What gives you such hope ?
After reading the following
, you should have no doubts !
City MP and Union
minister for road transport, highways and Shipping , Nitin Gadkari is all
set to launch a project to operate a 150 seater bus which will ply in the
air
He added that tender for
the project will be finalized by 15 Aug
Could a dramatic reduction
in Electric Car-Weight , leading to equally dramatic reduction in Lithium-ion
Battery size – and price – accelerate the adoption of Electric cars in India ?
No doubt !
Imagine if lighter weight
cars having very small Lithium-ion batteries were to start selling for Rs 5
lakh , then no one would want to touch a petrol car
And our government would
not need to spend Rs 10,000 crore ( under FAME II ) to “ incentivize “ buyers !
Is there any other
alternative to dramatically reduce battery size / cost, without having to
reduce the car weight ?
Sure !
Following breakthroughs in Battery
Technology are promising cheaper / much more powerful / longer lasting and
faster charging batteries :
A Lithium Air Battery [
fifth as light as current versions and one-fifth their prices ]
Lithium−Air Battery: Promise and Challenges
B
Graphene Battery
[ giving a 500 miles / 800 km range ]
Grabat Graphenano Energy
C Foam Batteries
https://www.prietobattery.com/
D Nano Batteries
Nanotechnology in Batteries (Nano Battery)
E Auminum – Air Batteries
EV juice from Alu-Air Battery ?
F
Sodium – Air Battery
Congratulations , Shri GopuKumarji
G
Hydrogen Fuel Cell
Ray , a drop of golden Sun
=========================================================
Dear Shri Gadkariji,
I
urge you to ask Prime Minister’s “ Science Technology and Innovation Advisory
Committee “ members to examine licensing Graphene
Manufacturing Technology from Prof. Sir Colin Humphreys / Paragraf
======================================================================
21 March 2019
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