4. Factors Conventional Capacitors Electrochemical capacitors Batteries
Charge time 10-6 ~ 10-3 s 1 ~ 30 s 0.3 ~ 3 h
Discharge time 10-6 ~ 10-3 s 1 ~ 30 s 1 ~ 5 h
Specific power (W/kg) 10,000 1000 ~ 2000 50 ~ 200
Specific energy (Wh/kg) < 0.1 1 ~ 10 20 ~ 100
Cycle life (cycle) > 500,000 > 100,000 500 ~ 2000
Charge-discharge efficiency (%) ~ 100 % 90 % ~ 95 % 70 % ~ 85 %
Comparison Properties & Performance
Electrochemical
Capacitors is most
suitable
5.
6. Offer flexible
alternatives in cost reduction by
utilizing cost-effective and
environmental friendly electrode
materials and electrolyte.
Resolve safety problem of the
organic electrolyte.
Optimize the performance of
electrochemical capacitors to be
equally important and
compatible to batteries.
7. Step 1
• Analysis of the problem
Step 2
• Function Analysis
Step 3
• Cause & Effect Chain Analysis (CECA)
Step 4
• Engineering Contradiction
Step 5
• Contradiction Matrix
Step 6
• Specific Inventive Principle
9. Commercial organic-
based electrochemical
capacitors are not as
widely used as battery
Low safety
Cause fire and
explosion
Poor specific
power
Flammable and
volatile solvents
High resistance/low
conductivity
High toxicity Contamination to
environment
Performances are
not optimized
Choice of current
collectors
Choice of
electrolytes
Poor specific
energy
Limited cell
voltage
Poor capacitance
High cost
High material cost
High fabrication
cost
Choice of electrode
materials
10. Improving Parameter Worsening Parameter
#31 Object-generated harmful factors #10 Force (Intensity)
#32 Ease of manufacture #21 Stability of object’s composition
#33 Ease of operation
Worsening parameter
Improving parameter
Force (Intensity) Stability of object’s composition
#10 #13
Object-generated harmful factors #31 #35 Parameter changes
#40 Composite materials
#1 Segmentation
#28 Mechanics substitution
#35 Parameter changes
#40 Composite materials
#39 Inert atmosphere (calmed
atmosphere)
Ease of manufacture #32 #35 Parameter changes
#12 Equipotentiality (remove
tension)
#1 Segmentation
#11 Beforehand cushioning
#13 The other way around
Ease of operation #33 #35 Parameter changes
#13 The other way around
#28 Mechanics substitution
#35 Parameter changes
#30 Flexible shells and thin films
#32 Color changes
Inventive Principle
#1 Segmentation
#35 Parameter Changes
#40 Composite Materials
