Addressing the interface issues of all‐solid‐state lithium batteries by ultra‐thin composite solid‐state electrolyte combined with the integrated preparation technology
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Open Access
Abstract
The interfacial engineering in solid‐state lithium batteries (SSLBs) is attracting escalating attention due to the profoundly enhanced safety, energy density, and charging capabilities of future power storage technologies. Nonetheless, polymer/ceramic interphase compatibility, serious agglomeration of ceramic particles, and discontinuous ionic conduction at the electrode/electrolyte interface seriously limit Li+ transport in SSLBs and block the application and large‐scale manufacturing. Hence, garnet Li7La3Zr2O12 (LLZO) nanoparticles are introduced into the polyacrylonitrile (PAN) nanofiber to fabricate a polymer‐ceramic nanofiber‐enhanced ultrathin SSE membrane (3D LLZO‐PAN), harnessing nanofiber confinement to aggregate LLZO nanoparticles to build the continuous conduction pathway of Li+. In addition, a novel integrated electrospinning process is deliberately designed to construct tight physical contact between positive electrode/electrolyte interphases. Importantly, the synergistic effect of the PAN, polyethylene oxide (PEO), and lithium bis((trifluoromethyl)sulfonyl)azanide (LiTFSI) benefits a stable solid electrolyte interphase (SEI) layer, resulting in superior cycling performance, achieving a remarkable 1500 h cycling at 0.2 mA cm−2 in the Li|3D LLZO‐PAN|Li battery. Consequently, the integrated polymer‐ceramic nanofiber‐enhanced SSEs simultaneously achieve the balance in ultrathin thickness (16 μm), fast ion transport (2.9 × 10−4 S cm−1), and superior excellent interface contact (15.6 Ω). The LiNi0.8Co0.1Mn0.1O2|3D LLZO‐PAN|Li batteries (2.7–4.3 V) can work over 200 cycles at 0.5 C. The pouch cells with practical LiNi0.8Co0.1Mn0.1O2||Li configuration achieve an ultrahigh energy density of 345.8 Wh kg−1 and safety performance. This work provides new strategies for the manufacturing and utilization of high‐energy‐density SSLBs. imageKeywords
Funding Information
- National Key Research and Development Program of China (2023YFB2503902)
- National Natural Science Foundation of China (U21A2080, 22479009)
This publication has 45 references indexed in Scilit:
- High Ionic Conductive, Mechanical Robust Sulfide Solid Electrolyte Films and Interface Design for All‐Solid‐State Lithium Metal BatteriesAdvanced Functional Materials, 2024
- A Lithium Intrusion‐Blocking Interfacial Shield for Wide‐Pressure‐Range Solid‐State Lithium Metal BatteriesAdvanced Materials, 2023
- Molecular‐level Designed Polymer Electrolyte for High‐Voltage Lithium–Metal Solid‐State BatteriesAdvanced Functional Materials, 2022
- High Energy Density Solid State Lithium Metal Batteries Enabled by Sub‐5 µm Solid Polymer ElectrolytesAdvanced Materials, 2021
- Uniform and Anisotropic Solid Electrolyte Membrane Enables Superior Solid‐State Li Metal BatteriesAdvanced Science, 2021
- Solid Polymer Electrolytes with High Conductivity and Transference Number of Li Ions for Li‐Based Rechargeable BatteriesAdvanced Science, 2021
- In Situ Ion‐Conducting Protective Layer Strategy to Stable Lithium Metal Anode for All‐Solid‐State Sulfide‐Based Lithium Metal BatteriesAdvanced Materials Interfaces, 2020
- Polymer‐Based Solid Electrolytes: Material Selection, Design, and ApplicationAdvanced Functional Materials, 2020
- Progress and Perspective of Ceramic/Polymer Composite Solid Electrolytes for Lithium BatteriesAdvanced Science, 2020
- Thin, Deformable, and Safety‐Reinforced Plastic Crystal Polymer Electrolytes for High‐Performance Flexible Lithium‐Ion BatteriesAdvanced Functional Materials, 2013