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Wang Q, Xu H, Liu Z, Chi SS, Chang J, Wang J, Wang C, Deng Y. Ultrathin, Mechanically Robust Quasi-Solid Composite Electrolyte for Solid-State Lithium Metal Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:22482-22492. [PMID: 38651802 DOI: 10.1021/acsami.4c01426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Herein, we present the preparation and properties of an ultrathin, mechanically robust, quasi-solid composite electrolyte (SEO-QSCE) for solid-state lithium metal battery (SLB) from a well-defined polystyrene-b-poly(ethylene oxide) diblock copolymer (SEO), Li6.75La3Zr1.75Ta0.25O12 nanofiller, and fluoroethylene carbonate plasticizer. Compared with the ordered lamellar microphase separation of SEO, the SEO-QSCE displays bicontinuous phases, consisting of a Li+ ion conductive poly(ethylene oxide) domain and a mechanically robust framework of the polystyrene domain. Therefore, the 12 μm-thick SEO-QSCE membrane exhibits an exceptional ionic conductivity of 1.3 × 10-3 S cm-1 at 30 °C, along with a remarkable tensile strength of 5.1 MPa and an elastic modulus of 2.7 GPa. The high mechanical robustness and the self-generated LiF-rich SEI enable the SEO-QSCE to have an extraordinary lithium dendrite prohibition effect. The SLB of Li|SEO-QSCE|LiFePO4 reveals superior cycling performances at 30 °C for over 600 cycles, maintaining an initial discharge capacity of 145 mAh g-1 and a remarkable capacity retention of 81% (117 mAh g-1) after 400 cycles at 0.5 C. The high-voltage SLB of Li|SEO-QSCE|LiNi0.5Co0.3Mn0.2O2 displays good cycling stability for over 150 cycles at 30 °C. Moreover, the exceptional robustness of SEO-QSCE enables the high-voltage solid-state pouch cell of Li|SEO-QSCE|LiNi0.5Co0.3Mn0.2O2 with high flexibility and excellent safety features. The current investigation delivers a promising and innovative approach for preparing quasi-solid electrolytes with features of ultrathin design, mechanical robustness, and exceptional electrochemical performance for high-voltage SLBs.
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Affiliation(s)
- Qingrong Wang
- Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Hongli Xu
- Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Zhongbo Liu
- Shenzhen CAPCHEM Technology Co. Ltd., Shabo Tongfuyu Industry Zone, Pingshan New District, Shenzhen 518118, PR China
| | - Shang-Sen Chi
- Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Jian Chang
- School of Physical Sciences, Great Bay University, Dongguan 523000, PR China
| | - Jun Wang
- Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Chaoyang Wang
- Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, PR China
| | - Yonghong Deng
- Department of Materials Science and Engineering, School of Innovation and Entrepreneurship, Guangdong Provincial Key Laboratory of Energy Materials for Electric Power, Southern University of Science and Technology, Shenzhen 518055, PR China
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Xu Y, Tian M, Rong Y, Lu C, Lu Z, Shi R, Gu T, Zhang Q, Jin C, Yang R. In situ electrochemical modification of the Li/Li 1.3Al 0.3Ti 1.7(PO 4) 3 interface in solid lithium metal batteries via an electrolyte additive. J Colloid Interface Sci 2023; 641:396-403. [PMID: 36948096 DOI: 10.1016/j.jcis.2023.03.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/04/2023] [Accepted: 03/10/2023] [Indexed: 03/14/2023]
Abstract
Solid-state Li batteries employing Li-metal anodes and solid Li/Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolytes have emerged as promising next-generation energy storage devices due to their high energy density and safety. However, their performance is seriously limited by the irreversible reactivity of LATP with the Li-metal anode and the poor solid-solid interfacial contact between them, which result in relatively low ionic conductivity at the interface. The present work addresses these issues by presenting a method for modifying the Li/LATP interface in situ by applying 2-(trimethylsilyl) phenyl trifluoromethanesulfonate (2-(TMS)PTM) as a new type of electrolyte additive between the Li anode and the LATP electrolyte when assembling the battery, and then forming a uniform and thin interfacial layer via redox reactions occurring during the application of multiple charge-discharge cycles to the resulting battery. As a result of the significantly improved chemical compatibility between the Li anode and the LATP electrolyte, an as-assembled battery delivers a high reversible capacity of 165.7 mAh g-1 and an outstanding capacity retention of 86.2% after 300 charge-discharge cycles conducted at a rate of 0.2C and a temperature of 30 °C. Accordingly, this work provides a new strategy for developing advanced solid-state Li metal batteries by tailoring the interface between the Li anode and the solid electrolyte.
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Affiliation(s)
- Yadong Xu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Meng Tian
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Yi Rong
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Chengyi Lu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Zhengyi Lu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Ruhua Shi
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Tianyi Gu
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Qian Zhang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China
| | - Chengchang Jin
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
| | - Ruizhi Yang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, China.
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Luo G, Liu D, Zhao J, Hussain A, Raza W, Wu Y, Liu F, Cai X. Negatively Charged Holey Titania Nanosheets Added Electrolyte to Realize Dendrite-Free Lithium Metal Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206176. [PMID: 36587971 DOI: 10.1002/smll.202206176] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/26/2022] [Indexed: 06/17/2023]
Abstract
Electrolyte modulation and electrode structure design are two common strategies to suppress dendrites growth on Li metal anode. In this work, a self-adaptive electrode construction method to suppress Li dendrites growth is reported, which merges the merits of electrolyte modulation and electrode structure design strategies. In detail, negatively charged titania nanosheets with densely packed nanopores on them are prepared. These holey nanosheets in the electrolyte move spontaneously onto the anode under electrical field, building a mesoporous structure on the electrode surface. The as-formed porous electrode has large surface area with good lithiophilicity, which can efficiently transfer lithium ion (Li+ ) inside the electrode, and induce the genuine lithium plating/stripping. Moreover, the negative charges and nanopores on the sheets can also regulate the lithium-ion flux to promote uniform deposition of Li metal. As a result, the symmetric and full cells using the holey titania nanosheets containing electrolyte, show much better performance than the ones using electrolyte without holey nanosheets inside. This work points out a new route for the practical applications of Li-metal batteries.
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Affiliation(s)
- Geng Luo
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Dongqing Liu
- College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Jie Zhao
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Arshad Hussain
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Waseem Raza
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Yanyan Wu
- School of Science and Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology, Shenzhen, Guangdong Province, 518055, P. R. China
| | - Fude Liu
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
| | - Xingke Cai
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong Province, 518060, P. R. China
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Liang X, Huang D, Lan L, Yang G, Huang J. Enhancement of the Electrochemical Performances of Composite Solid-State Electrolytes by Doping with Graphene. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3216. [PMID: 36145004 PMCID: PMC9501592 DOI: 10.3390/nano12183216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
With high safety and good flexibility, polymer-based composite solid electrolytes are considered to be promising electrolytes and are widely investigated in solid lithium batteries. However, the low conductivity and high interfacial impedance of polymer-based solid electrolytes hinder their industrial applications. Herein, a composite solid-state electrolyte containing graphene (PVDF-LATP-LiClO4-Graphene) with structurally stable and good electrochemical performance is explored and enables excellent electrochemical properties for lithium-ion batteries. The ionic conductivity of the composite electrolyte membrane containing 5 wt% graphene reaches 2.00 × 10-3 S cm-1 at 25 °C, which is higher than that of the composite electrolyte membrane without graphene (2.67 × 10-4 S cm-1). The electrochemical window of the composite electrolyte membrane containing 5 wt% graphene reaches 4.6 V, and its Li+ transference numbers reach 0.84. Assembling this electrolyte into the battery, the LFP/PVDF-LATP-LiClO4-Graphene /Li battery has a specific discharge capacity of 107 mAh g-1 at 0.2 C, and the capacity retention rate was 91.58% after 100 cycles, higher than that of the LiFePO4/PVDF-LATP-LiClO4/Li (LFP/PLL/Li) battery, being 94 mAh g-1 and 89.36%, respectively. This work provides a feasible solution for the potential application of composite solid electrolytes.
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Affiliation(s)
| | | | | | - Guanhua Yang
- Correspondence: (G.Y.); (J.H.); Tel.: +86-18607736532 (G.Y.); +86-17728100882 (J.H.)
| | - Jianling Huang
- Correspondence: (G.Y.); (J.H.); Tel.: +86-18607736532 (G.Y.); +86-17728100882 (J.H.)
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