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Zhu Z, Wu D, Feng L, He X, Hu T, Ye A, Fu X, Yang W, Wang Y. Architecting the Microenvironment Skeleton of Active Materials in High-Capacity Electrodes by Self-Assembled Nano-Building Blocks. Small 2023:e2307086. [PMID: 38155510 DOI: 10.1002/smll.202307086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 12/04/2023] [Indexed: 12/30/2023]
Abstract
In analogy to the cell microenvironment in biology, understanding and controlling the active-material microenvironment (ME@AM) microstructures in battery electrodes is essential to the successes of energy storage devices. However, this is extremely difficult for especially high-capacity active materials (AMs) like sulfur, due to the poor controlling on the electrode microstructures. To conquer this challenge, here, a semi-dry strategy based on self-assembled nano-building blocks is reported to construct nest-like robust ME@AM skeleton in a solvent-and-stress-less way. To do that, poly(vinylidene difluoride) nanoparticle binder is coated onto carbon-nanofibers (NB@CNF) via the nanostorm technology developed in the lab, to form self-assembled nano-building blocks in the dry slurry. After compressed into an electrode prototype, the self-assembled dry-slurry is then bonded by in-situ nanobinder solvation. With this strategy, mechanically strong thick sulfur electrodes are successfully fabricated without cracking and exhibit high capacity and good C-rate performance even at a high AM loading (25.0 mg cm-2 by 90 wt% in the whole electrode). This study may not only bring a promising solution to dry manufacturing of batteries, but also uncover the ME@AM structuring mechanism with nano-binder for guiding the design and control on electrode microstructures.
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Affiliation(s)
- Zhiwei Zhu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Dichen Wu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Lanxiang Feng
- School of Chemistry and Environment, Southwest Minzu University, Chengdu, Sichuan, 610225, China
| | - Xuewei He
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Ting Hu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Ang Ye
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Xuewei Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Wei Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
| | - Yu Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China
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Wang X, Chen S, Zhang K, Huang L, Shen H, Chen Z, Rong C, Wang G, Jiang Z. A Polytetrafluoroethylene-Based Solvent-Free Procedure for the Manufacturing of Lithium-Ion Batteries. Materials (Basel) 2023; 16:7232. [PMID: 38005162 PMCID: PMC10673244 DOI: 10.3390/ma16227232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023]
Abstract
Lithium-ion batteries (LIBs) have recently become popular for energy storage due to their high energy density, storage capacity, and long-term cycle life. Although binders make up only a small proportion of LIBs, they have become the key to promoting the transformation of the battery preparation process. Along with the development of binders, the battery manufacturing process has evolved from the conventional slurry-casting (SC) process to a more attractive solvent-free (SF) method. Compared with traditional LIBs manufacturing method, the SF method could dramatically reduce and increase the energy density due to the reduced preparation steps and enhanced electrode loading. Polytetrafluoroethylene (PTFE), as a typical binder, has played an important role in fabricating high-performance LIBs, particularly in regards to the SF technique. In this paper, the development history and application status of PTFE binder was introduced, and then its contributions and the inherent problems involved in the SF process were described and analyzed. Finally, the viewpoints concerning the future trends for PTFE-based SF manufacturing methods were also discussed. We hope this work can inspire future research concerning high-quality SF binders and assist in promoting the evolution of the SF manufacturing technology in regards to LIBs.
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Affiliation(s)
- Xuehan Wang
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
| | - Shuli Chen
- National Key Laboratory of Advanced Vehicle Integration and Control, China FAW Group Co., Ltd., Changchun 130013, China; (S.C.); (L.H.)
| | - Kaiqi Zhang
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
| | - Licheng Huang
- National Key Laboratory of Advanced Vehicle Integration and Control, China FAW Group Co., Ltd., Changchun 130013, China; (S.C.); (L.H.)
| | - Huilin Shen
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
| | - Zheng Chen
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
| | - Changru Rong
- National Key Laboratory of Advanced Vehicle Integration and Control, China FAW Group Co., Ltd., Changchun 130013, China; (S.C.); (L.H.)
| | - Guibin Wang
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
| | - Zhenhua Jiang
- Key Laboratory of High-Performance Plastics, Ministry of Education, National and Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymers, College of Chemistry, Jilin University, Changchun 130012, China; (X.W.); (K.Z.); (H.S.); (G.W.); (Z.J.)
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Deng S, Guo T, Heier J, Zhang C(J. Unraveling Polysulfide's Adsorption and Electrocatalytic Conversion on Metal Oxides for Li-S Batteries. Adv Sci (Weinh) 2023; 10:e2204930. [PMID: 36507567 PMCID: PMC9929279 DOI: 10.1002/advs.202204930] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/10/2022] [Indexed: 06/18/2023]
Abstract
Lithium sulfur (LiS) batteries possess high theoretical capacity and energy density, holding great promise for next generation electronics and electrical vehicles. However, the LiS batteries development is hindered by the shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPSs). Designing highly polar materials such as metal oxides (MOs) with moderate adsorption and effective catalytic activity is essential to overcome the above issues. To design efficient MOs catalysts, it is critical and necessary to understand the adsorption mechanism and associated catalytic processes of LiPSs. However, most reviews still lack a comprehensive investigation of the basic mechanism and always ignore their in-depth relationship. In this review, a systematic analysis toward understanding the underlying adsorption and catalytic mechanism in LiS chemistry as well as discussion of the typical works concerning MOs electrocatalysts are provided. Moreover, to improve the sluggish "adsorption-diffusion-conversion" process caused by the low conductive nature of MOs, oxygen vacancies and heterostructure engineering are elucidated as the two most effective strategies. The challenges and prospects of MOs electrocatalysts are also provided in the last section. The authors hope this review will provide instructive guidance to design effective catalyst materials and explore practical possibilities for the commercialization of LiS batteries.
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Affiliation(s)
- Shungui Deng
- College of Materials Science & EngineeringSichuan UniversityChengdu610065China
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Institute of Materials Science and EngineeringEcole Polytechnique Federale de Lausanne (EPFL)Station 12LausanneCH‐1015Switzerland
| | - Tiezhu Guo
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Key Laboratory of Multifunctional Materials and StructuresMinistry of EducationSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'anShaanxi710049China
| | - Jakob Heier
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
| | - Chuanfang (John) Zhang
- College of Materials Science & EngineeringSichuan UniversityChengdu610065China
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
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