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Zhang Q, Liu K, Liu K, Li J, Ma C, Zhou L, Du Y. Study of a composite solid electrolyte made from a new pyrrolidone-containing polymer and LLZTO. J Colloid Interface Sci 2020; 580:389-398. [PMID: 32693292 DOI: 10.1016/j.jcis.2020.07.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 11/25/2022]
Abstract
Improving the safety and performance of lithium ion batteries (LIB) sparked the idea of using a solid electrolyte to construct all-solid-state ones. In this study, a composite solid polymer electrolyte based on Li6.40La3Zr1.40Ta0.60O12 (LLZTO) nanoparticles and a random copolymer, poly(vinyl pyrrolidone-co-poly(oligo(ethylene oxide) methyl ether methacrylate) (PPO), was successfully prepared and investigated in detail. The copolymer PPO is mixed with LiTFSI and LLZTO at different ratios and the Li conductivity and other electrochemical properties were studied. The copolymer matrix shows the highest ionic conductivity, 2.43 × 10-5 S/cm at 60 °C, at the content of 20 wt% LiTFSI, the highest lithium ion transference number is determined to be 0.33 at room temperature, and the electrochemical stability reaches 4.3 V vs. Li+/Li. Interestingly, when compounded with LLZTO nanoparticles, the ionic conductivity is not improved much. For example, the highest ionic conductivity increases a little to 2.74 × 10-5 S/cm at 60 °C when 5 wt% LLZTO is added. However, a large increase in electrochemical stability to 5.0 V is obtained for the sample of PPO-20%-10LLZTO. Both PPO and the composite electrolyte show good cycling performance during a plating/stripping experiment at a current density of 0.01 mA/cm2. The limited improvement of properties is possibly due to the poor interface contact between PPO and LLZTO nanoparticles. The result may shed light on the complexity of fabricating composite electrolytes using mixtures of polymer and lithium-conducting ceramics.
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Affiliation(s)
- Qian Zhang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Department of Civil and Environmental Engineering & Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, PR China; Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, PR China.
| | - Kun Liu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Department of Civil and Environmental Engineering & Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, PR China
| | - Kang Liu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Department of Civil and Environmental Engineering & Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, PR China
| | - Junpeng Li
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Department of Civil and Environmental Engineering & Department of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, PR China
| | - Chunjie Ma
- Shaanxi J&R Optimum Energy Co., Ltd., Qingyang Building, Tsinghua Science Park, High-Tech Industries Development Zone, Xi'an 710075, PR China
| | - Liang Zhou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, PR China.
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Touris A, Chanpuriya S, Hillmyer MA, Bates FS. Synthetic strategies for the generation of ABCA' type asymmetric tetrablock terpolymers. Polym Chem 2014. [DOI: 10.1039/c4py00614c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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