Application of Ionic Liquids in Lithium Metal Batteries
Received date: 2024-06-21
Revised date: 2024-10-24
Online published: 2025-04-30
Supported by
National Natural Science Foundation of China(22108111)
National Natural Science Foundation of China(52064031)
National Natural Science Foundation of China(52104302)
Natural Science Foundation of Yunnan Province(202202AB080013)
Natural Science Foundation of Yunnan Province(202101BE070001-020)
Natural Science Foundation of Yunnan Province(202201AT070098)
Natural Science Foundation of Yunnan Province(202201AU070158)
Xingdian Talent Support Project(YNQR-QNRC-2020-081)
China Undergraduate Innovation and Entrepreneurship Training Program(202210674025)
China Undergraduate Innovation and Entrepreneurship Training Program(202410674078)
Yunnan Provincce Undergraduate Innovation and Entrepreneurship Training Program(S202310674135)
Kunming University of Science and Technology Analysis and Testing Funding(2023M20222202134)
Lithium metal batteries(LMBs)have emerged as a focal point for next-generation battery technology research due to their high energy density. However,the commercialization of lithium-metal batteries is hindered by a series of challenges,including lithium dendrite formation,volumetric expansion,and the rupture of the solid electrolyte interphase(SEI). Ionic liquids(ILs)are emerging as key candidate materials to address these issues due to their unique physical and chemical properties. Despite the significant potential of ionic liquids in lithium-metal batteries,several pressing issues,such as high costs and high viscosity,need to be addressed. Future research should focus on developing new low-cost,high-performance ionic liquids and further understanding their mechanisms in batteries. Additionally,combining advanced characterization techniques and theoretical calculations to explore the dynamic behavior and interfacial phenomena of ionic liquids in lithium metal batteries will help advance their practical applications. This review summarizes the safety issues involved in the research and development of lithium metal batteries,as well as the research progress of ionic liquids in their application as electrolytes and solid electrolytes in lithium metal batteries.
1 Introduction
2 The existing challenges confronting lithium metal batteries
2.1 Lithium dendrite
2.2 Rupture of SEI
2.3 Lithium anode volume expansion
3 Application of the ionic liquid in electrolytes of lithium metal batteries
3.1 Concept and classification
3.2 Ionic liquids in liquid-state electrolytes
3.3 Ionic liquids in pseudo-solid-state electrolytes
3.4 Ionic liquids in additives
3.5 Ionic liquids in lithium salts
4 Conclusion and outlook
Ji Liu , Yaochun Yao , Shaoze Zhang , Keyu Zhang , Changjun Peng , Honglai Liu . Application of Ionic Liquids in Lithium Metal Batteries[J]. Progress in Chemistry, 2025 , 37(5) : 788 -800 . DOI: 10.7536/PC240614
图2 (a,b)利用原位光学显微镜观察使用REF和MTDC的Li/Li电池在1 mA·cm-2下的沉积形态;(c,e)MTDC和REF的循环阴极NCM622的SEM图像;(d,f)MTDC和REF的循环阴极NCM811的SEM图像循环阴极;(g,h)NCM622和NCM811的TEM图像;循环100次后,NCM622在CEI层上的(i)O 1s、(j)C 1s、(k)N 1s、(l)F、(m)B 1s的XPS光谱;(n)MTDC和REF电解液中AFM的典型形态;(o)更换电解质后的NCM622/Li电池示意图;(p)更换电解液后的NCM622/Li电池循环性能[22]Fig.2 (a,b)Deposition morphology of Li/Li batteries using REF and MTDC at 1 mA·cm-2 observed by in-situ optical microscopy.(c,e)SEM images of circulating cathode NCM622 of MTDC and REF.(d,f)SEM images of MTDC and REF cyclic cathodes NCM811 cyclic cathodes.(g,h)NCM622 and NCM811 after 100 cycles of TEM images,XPS spectra of(i)O 1s,(j)C 1s,(k)N 1s,(l)F,(m)B 1s of NCM622 on the CEI layer.(n)Typical morphology of AFM in MTDC and REF electrolyte.(o)Schematic diagram of NCM622/Li battery after electrolyte replacement.(p)Cycle performance of NCM622/Li battery after electrolyte replacement[22]. Copyright 2022,John Wiley and Sons |
图7 (a)不同比例PHE的Nyquist图;(b)不同组分比例的PHE的适用系数和离子电导率;(c)不同比例PHE的光学图像(LATP: ILE)[51]Fig.7 (a)Nyquist diagram of PHE with different proportions.(b)Applicable coefficient and ionic conductivity of PHE with different component proportions.(c)Optical image of PHE with different proportions(LATP: ILE)[51]. Copyright 2022,John Wiley and Sons |
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