In-operando Measurement of Internal Temperature and Stress in Lithium-ion Batteries
-
- Hirano Tatsumi
- Kyoto University
-
- Maeda Takehiro
- Kyoto University
-
- Murata Tetsuyuki
- Kyoto University
-
- Yamaki Takahiro
- Kyoto University
-
- Matsubara Eiichiro
- Kyoto University
-
- Shobu Takahisa
- Japan Atomic Energy Agency
-
- Shiro Ayumi
- National Institutes for Quantum and Radiological Science and Technology
-
- Yasuda Ryo
- National Institutes for Quantum and Radiological Science and Technology
-
- Takamatsu Daiko
- Hitachi, Ltd.
抄録
The temperature rise due to high current/power operations and stress caused by the expansion or contraction of electrodes by lithium (de)-intercalation is known to be a degradation factor in lithium-ion batteries (LIBs). Therefore, in this study, a new technique is proposed to simultaneously measure the internal temperature and stress in the 18650-type LIB during its operation. The operando measurement involved retaining a constant gage volume using rotating spiral slits, obtaining X-ray diffraction images using a highly sensitive two-dimensional detector, and employing the sin2ψ method to separate the stress and change in temperature. During the charging process, at the 1C current rate, the anode expansion, owing to the lithium intercalation, induced the radial compressive stress in the Cu anode collector. The radial stress changes of the Cu anode collector were -31 MPa (compression) and 44 MPa (tensile) during the 1C charge and discharge processes, respectively. Moreover, the internal temperature, which was higher than the surface temperature, was calculated by considering the radial stress change during the battery operation. During the 4C cycle, the surface and internal temperatures rose by 26 °C and 42 °C, respectively. The results indicate that the internal temperature and stress in the 18650-LIB were successfully measured during battery operation.
収録刊行物
-
- SPring-8/SACLA利用研究成果集
-
SPring-8/SACLA利用研究成果集 11 (1), 49-57, 2023-02-28
公益財団法人 高輝度光科学研究センター
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390295259245009280
-
- ISSN
- 21876886
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
-
- 抄録ライセンスフラグ
- 使用不可