danielfp248
Battery researcher
- Joined
- Sep 7, 2020
- Messages
- 429
For these tests, I built a battery using the 15m ZnCl2, 5m KI, 5m NaCl WiS electrolyte using a CC6P cathode and two layers of fiberglass. I decided to charge the battery to just 1mAh of fixed charge capacity, at 10mA. This is in order to test cycling stability quickly as I have always been getting degradation as a function of cycle number, even at lower capacities.
![1633873430214.png 1633873430214.png](https://diysolarforum.com/data/attachments/68/68274-d032c7e534f35355b643724d8864deef.jpg)
![1633873440764.png 1633873440764.png](https://diysolarforum.com/data/attachments/68/68275-038780b6e2967317b18438ce2d08cc0a.jpg)
![1633873466015.png 1633873466015.png](https://diysolarforum.com/data/attachments/68/68277-831fe12224c53b456d3623e6788b245f.jpg)
I am very excited to say that after 10 cycles, the capacity has been steady and the charge/discharge voltages have actually improved as a function of time. The coulombic and energy efficiency values did decrease a little bit compared to previous experiments without NaCl in the WiS electrolyte, but stability has increased tremendously. I am going to cycle 50 times to this capacity, if stability remains good, I will proceed to cycle at higher capacities (4mAh) and see what we get ?
![1633873430214.png 1633873430214.png](https://diysolarforum.com/data/attachments/68/68274-d032c7e534f35355b643724d8864deef.jpg)
![1633873440764.png 1633873440764.png](https://diysolarforum.com/data/attachments/68/68275-038780b6e2967317b18438ce2d08cc0a.jpg)
![1633873451085.png 1633873451085.png](https://diysolarforum.com/data/attachments/68/68276-8f5436f06aa91a7f939aae4f9d6bc243.jpg)
![1633873466015.png 1633873466015.png](https://diysolarforum.com/data/attachments/68/68277-831fe12224c53b456d3623e6788b245f.jpg)
I am very excited to say that after 10 cycles, the capacity has been steady and the charge/discharge voltages have actually improved as a function of time. The coulombic and energy efficiency values did decrease a little bit compared to previous experiments without NaCl in the WiS electrolyte, but stability has increased tremendously. I am going to cycle 50 times to this capacity, if stability remains good, I will proceed to cycle at higher capacities (4mAh) and see what we get ?