paraffin oil (μL)

MWCNTs (mg)

graphite powder (mg)

electrode

3.6

-

12

graphite

2.7

3

6

MWCNTs-G (1:2)

2.7

6

3

MWCNTs-G (2:1)

3.6

6

6

MWCNTs:G (1:1)

Table 1: The components of electrodes.