Flowerlike CeO2 used as novel adsorption material for removal of hydrogen fluoride gas from lithium-ion battery during thermal runaway
Haozhe Xu , Shuai Yuan , Chunwen Sun , Donghao Cheng
Flowerlike CeO2 used as novel adsorption material for removal of hydrogen fluoride gas from lithium-ion battery during thermal runaway
Thermal runaway presents a significant challenge for large-scale application of lithium-ion batteries (LIBs), often leading to the release of flammable, explosive, and toxic gases. In this study, porous flowerlike cerium dioxide microspheres (FL-CeO2) were investigated to eliminate hydrogen fluoride (HF) gas generated during thermal runaway. A dedicated test device and method were developed for this purpose. The FL-CeO2 was synthesized via a hydrothermal method and coated onto nickel foam to fabricate a gas filter. During thermal runaway of a 5 Ah lithium iron phosphate (LiFePO4) battery, the filter—loaded with 1.2 g CeO2—achieved an instantaneous HF removal rate of up to 82.24% within approximately 40–50 s. X-ray photoelectron spectroscopy (XPS) results indicate that F− ions replace O2− ions in the CeO2 lattice. Additionally, the potential for reusability of the CeO2 microspheres was evaluated through multiple HF adsorption and desorption cycles. After 10 cycles, the regenerated CeO2 microspheres retained a HF adsorption rate of 76.11%, demonstrating promising reusability.
lithium-ion batteries (LIBs) / thermal runaway / ceria microspheres / hydrogen fluoride (HF) / regeneration
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
|
| [44] |
|
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
Higher Education Press 2025
Supplementary files
/
| 〈 |
|
〉 |