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花状LiFePO4微球的湿敏性能研究与皮肤湿度监测
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Abstract:
本工作以简单水热法合成了纳米片组装的花状LiFePO4微球，在材料表征的基础上，首次探究了其湿敏性能。LiFePO4微球的特殊形貌和较大的比表面积有利于暴露更多活性位点，提升湿敏性能。测试结果表明，基于LiFePO4的湿敏传感器件具有良好的湿敏性能，显示了三个数量级的响应值(1.5 × 103)，并具有较短的响应时间(15 s)，展示了人体皮肤湿度监测的应用潜力。本工作不仅提供了一种优异的湿敏材料，而且扩展了LiFePO4的应用范围。
In this work, flower-like LiFePO4 microspheres were synthesized by a simple hydrothermal method. After material characterization, the humidity sensing performance of the LiFePO4 sample was explored for the first time. LiFePO4 microspheres featuring special morphology and a large specific surface area can provide more active sites for boosted humidity sensing. The test results show that the humidity sensor based on LiFePO4 shows good humidity sensitivity, as high as three orders of magnitude (1.5 × 103), and short response time (15 s), demonstrating the application potential of human skin moisture monitoring. This work not only provides an excellent humidity sensing material, but also expands the application scope of LiFePO4.
| [1] | Duan, Z., Jiang, Y. and Tai, H. (2021) Recent Advances in Humidity Sensors for Human Body Related Humidity Detection. Journal of Materials Chemistry C, 9, 14963-14980. https://doi.org/10.1039/d1tc04180k |
| [2] | Zhang, D., Wang, M., Tang, M., Song, X., Zhang, X., Kang, Z., et al. (2023) Recent Progress of Diversiform Humidity Sensors Based on Versatile Nanomaterials and Their Prospective Applications. Nano Research, 16, 11938-11958. https://doi.org/10.1007/s12274-022-4917-y |
| [3] | Jiang, K., Zhao, H., Dai, J., Kuang, D., Fei, T. and Zhang, T. (2016) Excellent Humidity Sensor Based on LiCl Loaded Hierarchically Porous Polymeric Microspheres. ACS Applied Materials & Interfaces, 8, 25529-25534. https://doi.org/10.1021/acsami.6b08071 |
| [4] | Zhang, Y., Xiong, J., Chen, C., Li, Q., Liu, J. and Zhang, Z. (2020) Regulating the Dissociation of LiCl and Transportation of Li Ions within UiO-66-NH2 Framework for Humidity Sensing Applications with Superb Comprehensive Performances. Journal of Alloys and Compounds, 818, Article ID: 152854. https://doi.org/10.1016/j.jallcom.2019.152854 |
| [5] | Reich, R., Eiche, E. and Kolb, J. (2024) Delithiation and Lithiation of LiFePO4: Implications for Direct Li Extraction from Synthetic Solutions and Geothermal Brines. Desalination, 586, Article ID: 117883. https://doi.org/10.1016/j.desal.2024.117883 |
| [6] | Ma, Y., Hu, X., Li, S., He, Y., Xia, Z. and Cai, K. (2022) A Facile and Flexible Humidity Sensor Based on Porous PDMS/AgNWs and GO for Environmental Humidity and Respiratory Detection. Macromolecular Materials and Engineering, 307, Article ID: 2100686. https://doi.org/10.1002/mame.202100686 |
| [7] | Wu, Z., Liu, W., Shi, J., Han, B., Li, D., Xu, X., et al. (2022) Renewable and Fast Response Humidity Sensors Based on Multiple Construction of Water Graftable Molecules Highly Sensitive Surface. Surfaces and Interfaces, 31, Article ID: 102035. https://doi.org/10.1016/j.surfin.2022.102035 |
| [8] | Huo, C., Chen, H., Chen, L., Yang, S., Cui, P. and Song, J. (2024) Humidity Sensor Based on ZnO MS/GR Composite Material. Journal of Electronic Materials, 53, 5238-5245. https://doi.org/10.1007/s11664-024-11259-7 |
| [9] | Shi, W., Yang, X., Lei, L., Lin, J., Liang, Q., Huang, X., et al. (2025) Human Respiration Monitoring Using Humidity and Temperature Dual-Modal Sensors for Temperature-Insensitive Humidity Sensing and Synchronous Temperature Sensing. Sensors and Actuators A: Physical, 395, Article ID: 117008. https://doi.org/10.1016/j.sna.2025.117008 |
| [10] | Zhang, Y., Wu, Y., Duan, Z., Liu, B., Zhao, Q., Yuan, Z., et al. (2022) High Performance Humidity Sensor Based on 3D Mesoporous Co3O4 Hollow Polyhedron for Multifunctional Applications. Applied Surface Science, 585, Article ID: 152698. https://doi.org/10.1016/j.apsusc.2022.152698 |
| [11] | Chang, Q., Wu, D., Huang, Y., Liang, C., Liu, L., Liu, H., et al. (2022) Ultrahigh Response Humidity Sensor Based on Lead-Free Cs2SnCl6 Perovskite Films. IEEE Electron Device Letters, 43, 805-808. https://doi.org/10.1109/led.2022.3157633 |
