Beyond battery power CDE themed challenge, part 3. Outline of the technical challenge and future aspirations.

1. Beyond battery power
The challenge
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07 December 2016

2. Why beyond batteries?
• MOD uses many batteries in portable
applications
 primaries, eg alkaline, lithium iron disulphide
 secondaries, eg lithium ion
• next generation of batteries already being
addressed in the research programme -
• not expected to reach beyond 700 Wh/kg
for a fieldable rugged battery
OFFICIAL© Crown copyright 2016 Dstl
07 December 2016
0
100
200
300
400
500
600
700
800
900
1000
Specificenergy(Wh/kg)
Alkaline
cell
Li-FeS2
cell
Specialist
cells
Cell
research
space
Specialist
batteries
Li-SO2, Li-
MnO2
batteries
Li ion
batteries
Development
batteries
Primary Secondary

3. Technology metrics
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07 December 2016
• long-lasting, portable 50 to 500W
lightweight systems stretching to days
as opposed to hours or minutes
• duration – up to two days
• low cost and ideally disposable

4. Technology metrics
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07 December 2016
• high specific energy
• 24-48 hours at least 700 Wh/Kg for a
complete system including:
 energy conversion hardware
 packaging
 fuel and fuel storage
• beyond what can be achieved with a
rugged battery

5. Beyond battery power
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07 December 2016
Power (W) 24 hr System
Weight (kg)
48 hr System
Weight (kg)
50 1.7 3.4
150 5.1 10.3
300 10.3 20.6

6. OFFICIAL© Crown copyright 2013 Dstl
07 December 2016
• looking for a stretch potential to exceed 1000
Wh/kg - ideally 1500 Wh/kg
• founded on independent data
• emphasised fieldability
Future expectations

7. OFFICIAL© Crown copyright 2013 Dstl
07 December 2016
Identified fuel cells, combustion technologies,
particularly internal/external combustion
engines, ultra-microturbines, as capable of
achieving >1000 Wh/kg
Future expectations

8. Technical challenges identified
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07 December 2016
• miniaturisation
• durability
• integration into a fieldable package
• fuel cells operating satisfactorily on liquid hydrocarbon fuels

9. A final word on the challenge
OFFICIAL© Crown copyright 2016 Dstl
07 December 2016
• technologies mentioned are not intended to be prescriptive
• we want your ideas
• this is a challenging requirement
• think outside the box