Simultaneously Enhancing the Thermal Stability, Mechanical Modulus, and Electrochemical Performance of Solid Polymer Electrolytes by Incorporating 2D Sheets
By Wenjing Tang, Shan Tang, Cuijuan Zhang, Qingtao Ma, Qian Xiang, Yingwei Yang, Jiayan Luo. Advanced Energy Materials, 2018
276 citations recorded by the source corpus.
Solid state electrolytes are the key components for high energy density lithium ion batteries and especially for lithium metal batteries where lithium dendrite growth is an inevitable obstacle in liquid electrolytes. Solid polymer electrolytes based on a complex of polymers and lithium salts are intrinsically advantageous over inorganic electrolytes in terms of processability and film‐forming properties. But other properties such as ionic conductivity, thermal stability, mechanical modulus, and electrochemical stability need to be improved. Herein, for the first time, 2D additives using few‐layer vermiculite clay sheets as an example to comprehensively upgrade poly(ethylene oxide)‐based solid polymer electrolyte are introduced. With clay sheet additives, the polymer electrolyte exhibits improved thermal stability, mechanical modulus, ionic conductivity, and electrochemical stability along with reduced flammability and interface resistance. The composite polymer electrolyte can suppress the formation and growth of lithium dendrites in lithium metal batteries. It is anticipated that the clay sheets upgraded solid polymer electrolyte can be integrated to construct high performance solid state lithium ion and lithium metal batteries with higher energy and safety.
Subfields: Automotive Engineering, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/d4a9d00e862495bd6b49f55f4b0ae3ca7b8ac263
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In Automotive Engineering
In Electrical and Electronic Engineering
- Liquan Chen
- Hong Li
- Hongli Zhu
- Yong‐Sheng Hu
- M. Titirici
- Qiang Zhang
- Xuejie Huang
- Arumugam Manthiram
Citations in the corpus
- Progress in thermal stability of all‐solid‐state‐Li‐ion‐batteries (2021, background): “The PEO/PVDF electrolyte layer with LLZO added showed better flame-retardant performance than the Celgard separator (Figure 4(B)).52 Owing to the excellent thermal safety of PVDF-HFP, the PVDF-HFP/PFPEs/20 wt% LGPS showed good fire-resistance in the flammability test (Figure 4 (C)).50 Tang et al.53 ”
- Lithium Dendrite in All-Solid-State Batteries: Growth Mechanisms, Suppression Strategies, and Characterizations (2020, methodology): “introduced 2D vermiculite clay sheets into the PEO-based SPE to prompt the mechanical strength and ionic conductivity (Figure 8A).(58) Compared with 0D and 1D fillers, 2D geometry had higher surface area and could antideform.”