TRIZ

2013 COMPETITION

Part 3

TUNKU ABDUL RAHMAN UNIVERSITY COLLEGE

Registration No : MTZ7607

Team Maverick:Ng Yen Ming Ng Boon KeeHo Mui Yen

51.70%

26.60%

13.90%7.80%

Industrial

Transportation

Residential

Commercial

Problem Description Demand of Energy consumption increased rapidly.

The maximum utilization of renewable energy sources could be limited by several critical underlying reasons

Limitations of Renewable

Energies

Intermittent energy harvesting

Climate constraints

Geographical constraints

Limited control over natural phenomena

Limitation

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

Benefits 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.

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

Process Flow

Curr

ent

Co

llect

or

Curr

ent

Co

llect

or

CathodeAnode

Separator

Electrolyte ion

Diffus

eDiffuse

Separator Separator

Hold

Hol

d

ion ion

Function Analysis

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 costHigh material cost

High fabrication cost

Choice of electrode materials

Cause and Effect Chain Analysis

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

Engineering ContradictionWorsening 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

Thank You