A Brief Review on Solid Electrolyte Interphase Composition Characterization Technology for Lithium Metal Batteries: Challenges and Perspectives

Abstract

Lithium metal batteries (LMB) are recognized as the most promising high-energy-density energy storage devices. However, its large-scale commercial applications are seriously hampered by the poor cycling stability and potential safety issues. Solid electrolyte interphase (SEI) acts a dominant role in influencing the regulation of Li deposition and overall performance of LMBs, but the composition as well as the evolution of SEI remain quite elusive. Advanced characterization methods and operando monitoring techniques are urgently required. Herein, in this perspective, we first briefly introduce the development history of SEI research and the SEI formation mechanisms as well as the common known components of SEI. Then, we focus on several recent advanced technologies for SEI characterization and monitoring, and the corresponding study cases will be presented. In the end, perspectives including the future investigation directions, the in situ characterization methods, and the component-performance associated model are proposed. We believe that this timely review will help to give a comprehensive understanding on the up-to-date SEI characterization tools.

Laser Irradiation of a Bio-Waste Derived Carbon Unlocks Performance Enhancement in Secondary Lithium Batteries

“…Moreover O/C area ratio, that was of 0.07 and 0.08 for BIO04 and BIO04i, respectively, indicating a low degree of carbon oxidation even after laser irradiation, useful for battery application to limit SEI formation [5,42].…”

High‐rate and dendrite‐free liquid alloy anode for high energy potassium metal batteries

“…Along with the development of lithium-ion batteries (LIBs), advancing rechargeable secondary batteries becomes an enduring goal that could safely accelerate energy storage systems at a reasonable cost. [1][2][3][4][5][6] Recently potassium ion batteries (PIBs) with high theoretical capacity, low-cost and abundant resource, have aroused widespread concerns. 7,8 However, they are still in the infancy and impeded by many obstacles.…”

Recent Advances in Solid-Electrolyte Interphase for Li Metal Anode

“…Lithium metal has attracted much attention owing to its high specific capacity (3,860 mAhg −1 ), low mass density (0.59 g cm −3 ), and the lowest electrochemical reaction potential (−3.040 V vs. standard hydrogen electrode) ( Haiping Wu et al, 2021 ). A high energy density of 600 Whkg −1 can be achieved when lithium metal anode is matched with intercalation-type cathode materials (such as NCM and NCA) ( Shan et al, 2021 ). The theoretical energy density can be further enhanced to 2,600 and 3500 Whkg −1 when the Li metal anode is used in Li-S and Li-O 2 battery systems ( Liping Wang et al, 2019 ).…”