Insight into discharge of non-aqueous Li-O2 battery using a three-dimensional electrochemical lattice Boltzmann model
文献类型：期刊论文
| 作者 | Lei,Timan4; Yang,Junyu4; Wang G(王耿)3; Chen,Jin4; He,Yinglong2; Luo,Kai H1,4 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 501页码:15 |
| 关键词 | Lattice Boltzmann method Electrochemical reaction Electrode and electrolyte designs Pore-scale modeling O(2)transport Non-aqueous Li-O(2)battery |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2024.157462 |
| 通讯作者 | Luo, Kai H.(k.luo@ucl.ac.uk) |
| 英文摘要 | Non-aqueous Li-O2 battery (NALiO2B) is a promising alternative to lithium-ion batteries, offering high theoretical energy density. However, its practical applications are hampered by limited understanding of the underlying mechanisms. In this study, a three-dimensional electrochemical lattice Boltzmann method is proposed to simulate the physical and electrochemical processes during NALiO2B discharge at the pore scale. The discharge performance of NALiO2B is evaluated for various electrode and electrolyte designs. It is found that the limited O2 diffusion within homogeneous electrodes is the primary cause of the declined reactive electrode surface area, the intensified electrochemical reaction (or overpotential), and finally the premature battery death. This issue can be mitigated by employing the hierarchical electrode BP2 with a bi-porous structure. The large pores in BP2 improve O2 transport to sustain the continuous electrochemical reaction process, thus enhancing the discharge capacity of NALiO2B. To further boost the rate capability of NALiO2B, BP2 is partially infiltrated with electrolyte to form the multiphase (MP) electrode, where air bubbles exist and serve as O2 reservoirs. These bubbles effectively provide adequate O2 to support the extensive O2 consumption during the fast electrochemical reaction at high current densities. Consequently, NALiO2B with MP demonstrates the satisfactory discharge capacity and rate capability. This study provides valuable insights into the complex physics and reaction kinetics behind NALiO2B discharge, which facilitates the optimization and development of NALiO2B. |
| 分类号 | 一类 |
| WOS关键词 | LITHIUM-OXYGEN BATTERIES ; PORE-SCALE ; AIR BATTERIES ; CAPACITY ; CATHODE ; GROWTH ; REDUCTION ; MECHANISM ; EVOLUTION ; TRANSPORT |
| 资助项目 | UK Engineering and Physical Sciences Research Council (EPSRC) ; EPSRC, United Kingdom[EP/X035875/1] ; [EP/W026260/1] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001363650100001 |
| 资助机构 | UK Engineering and Physical Sciences Research Council (EPSRC) ; EPSRC, United Kingdom |
| 其他责任者 | Luo, Kai H. |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97556]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Zhejiang Univ, Shanghai Inst Adv Study, Shanghai 201203, Peoples R China 2.Univ Surrey, Sch Mech Engn Sci, Guildford GU2 7XH, England; 3.Chinese Acad Sci, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China; 4.UCL, Dept Mech Engn, Torrington Pl, London WC1E 7JE, England; |
| 推荐引用方式 GB/T 7714 | Lei,Timan,Yang,Junyu,Wang G,et al. Insight into discharge of non-aqueous Li-O2 battery using a three-dimensional electrochemical lattice Boltzmann model[J]. CHEMICAL ENGINEERING JOURNAL,2024,501:15. |
| APA | Lei,Timan,Yang,Junyu,王耿,Chen,Jin,He,Yinglong,&Luo,Kai H.(2024).Insight into discharge of non-aqueous Li-O2 battery using a three-dimensional electrochemical lattice Boltzmann model.CHEMICAL ENGINEERING JOURNAL,501,15. |
| MLA | Lei,Timan,et al."Insight into discharge of non-aqueous Li-O2 battery using a three-dimensional electrochemical lattice Boltzmann model".CHEMICAL ENGINEERING JOURNAL 501(2024):15. |
入库方式： OAI收割
来源：力学研究所
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