1. Plant microbial fuel cells
Speaker : 郑易

2. A new way…
to produce
electricity
Speaker : 郑易
by plants!

3. Each potato can produce a voltage of about 0
Each potato can produce a voltage of about 0.5 volts, current of about 0.2 mA.
This server is very, very slow (around 0.2 hits/second), so you may have trouble connecting.

4. Plant microbial fuel cells
Contents 1
Background 2
Definitions 3
Theory 4
Application 5
Summary

5. photosynthesis
Energy： 4500EJ = 4.5X1021 J
Carbon ： 125，000，000，000 ton
= Petrol : 300,000,000 ton / day

6. photosynthesis
光合作用
membrane 薄膜
anode 阳极
cathode 阴极

7. CO2 02 02 C6H12O6 CO2 membrane anode H2O cathode H+ e-
Organic matter produced via photosynthesis
CO2
CO2 taken up, O2 released
C6H12O6 released via roots 02
Micro organisms break it down into CO2&H20
2 STEP: 02
C6H12O6
Anode
CO2
2C6H12O6 → 2C6H1006+4H++4e-
H2O H+
anode
membrane
cathode
Cathode e-
O2+4e-+4H+ → 2H2O

8. (= voltage efficiency)
Power density
0.22w/m2
3.2w/m2
Coulombic efficiency
20%~60%
Internal resistance
(= voltage efficiency)
0.101Ω.m2
0.47A/m2
Current density

9. PFMC Power density 3.2w/m2 x 100m2 x 365 days x 24 hours
= 2800kwh/year
PFMC

13. bioenergy without competition to food
Advantages
Disadvantages
clean
efficiency
renewable
material
sustainable
collection
24h/day electricity
bioenergy without competition to food

14. Thank you for listening