Zinc Battery

In this video I show to you how to Improving the capacity with adding carbon black to the negative electrode.

How was made the test cell:
- Cathode was made with MnO2 and carbon in ratio 2:1 with graphite current collector
- Electrolyte which I use in the test cell was 6 mol KOH
- Anode 1 was made from zinc plate and zinc powder
- Anode 2 was made from zinc plate and zinc powder + carbon black

How is made the Anode 2:
Zinc powder (4.4g) and Carbon Black (0.09g) was mixed and added 1 gram of the mix to zinc plate.

The test:
With anode 1 the test cell have the voltage of 1.4 volts and the current of 240 mA. The runtime of the test cell on 30 mA load was almost 18 min.

The test cell with Anode 2 have also the voltage of 1.4 volts but the current was a litle bit higher 320 mA. The runtime with anode 2 was 24 min on 30 mA load.

Paper Note:
****The specific discharge capacity of pure Zn is 556 mA h g−1. When 1 wt% Super P (Zn1C) was added to the anode system, the specific discharge capacity increased to 645 mA h g−1. The highest specific discharge capacity (776 mA h g−1) was achieved at 2 wt% Super P (Zn2C). However, beyond 2 wt% Super P (Zn3C and Zn4C), the specific discharge capacity was reduced to 429 and 422 mA h g−1,
respectively****

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