Li-polymer Cells
- Eric Zhao
- Ria Baijal
- Jeyoung Park
Li-Ion vs Li-Poly: Li-Poly’s advantages over Li-Ion
Lithium-polymer technology uses a positive and negative electrode, but with a dry solid, porous chemical, or gel-like electrolyte, rather than a liquid. Consequently, Li-Poly batteries can offer a lower profile, flexible, and most robust designs [1](wide variety of shapes and sizes)[5].
Lithium-Polymer cells are slightly more safer than Lithium-Ion cells [1], due to a lower chance of leaking electrolytes[5]
Li-Polymer batteries are lighter[5]
Li-Ion vs Li-Poly: Li-Poly’s disadvantages over Li-Ion
Li-Poly has a notably higher manufacturing cost [1].
The lithium-polymer’s life cycle is shorter than that of Lithium-Ion [1].
Li-Poly cells tend to have lower energy density than Li-Ion ones do [1].
Specific Manufacturers (vs LG MJ1)
Notes: When choosing a cell to compare with LG INR18640 MJ1, which is the on we used for MSXIV, cells with similar mass were chosen.
Honcell medium capacity range Li-polymer cell
| INR18650 | HCP904250 |
Battery Capacity (Ah) | Nom: 3.5 Min: 3.4 | Nom: 2.2 (at 20 degree Celcius) |
Charge Rate | 1.7A Std. 3.4A Max. | 0.2C Std. 0.5C Max. (Continous) 1.0C Max. (Peak) |
Battery Mass (kg) | 0.049 | 0.0483 |
Cell Voltage | Nom: 3.635 Max: 4.2 Min: 2.5 | Nom: 3.7 Max: 4.2 Min: 3.0 |
Battery Cost (US$) | $3.71/cell | Need to Contact the Manufacturer |
Max Discharge | 10A | 1.0C 2.0C |
Producer | LG Chem Ltd. (South Korea) | Shenzhen Honcell Energy Co., Ltd (China) |
Product Information Page: [2][3][4]
Conclusion
References