Buffering Volume Change in Solid-State Battery Composite Cathodes with CO2-Derived Block Polycarbonate Ethers
Georgina L. Gregory,Hui Gao,Boyang Liu,Xiang Gao,Gregory J. Rees,Mauro Pasta,Peter G. Bruce,Charlotte K. Williams +7 more
TLDR
In this paper , block polymers designed to address these issues combine ionic conductivity, electrochemical stability, and suitable elastomeric mechanical properties, including adhesion, where the soft “B” block is poly(ethylene oxide) (PEO), and the hard “A) block is a CO2-derived polycarbonate, poly(4-vinyl cyclohexene oxide carbonate), which provides mechanical rigidity and enhances oxidative stability.Abstract:
Polymers designed with a specific combination of electrochemical, mechanical, and chemical properties could help overcome challenges limiting practical all-solid-state batteries for high-performance next-generation energy storage devices. In composite cathodes, comprising active cathode material, inorganic solid electrolyte, and carbon, battery longevity is limited by active particle volume changes occurring on charge/discharge. To overcome this, impractical high pressures are applied to maintain interfacial contact. Herein, block polymers designed to address these issues combine ionic conductivity, electrochemical stability, and suitable elastomeric mechanical properties, including adhesion. The block polymers have “hard-soft-hard”, ABA, block structures, where the soft “B” block is poly(ethylene oxide) (PEO), known to promote ionic conductivity, and the hard “A” block is a CO2-derived polycarbonate, poly(4-vinyl cyclohexene oxide carbonate), which provides mechanical rigidity and enhances oxidative stability. ABA block polymers featuring controllable PEO and polycarbonate lengths are straightforwardly prepared using hydroxyl telechelic PEO as a macroinitiator for CO2/epoxide ring-opening copolymerization and a well-controlled Mg(II)Co(II) catalyst. The influence of block polymer composition upon electrochemical and mechanical properties is investigated, with phosphonic acid functionalities being installed in the polycarbonate domains for adhesive properties. Three lead polymer materials are identified; these materials show an ambient ionic conductivity of 10 –4 S cm–1, lithium-ion transport (tLi+ 0.3–0.62), oxidative stability (>4 V vs Li+/Li), and elastomeric or plastomer properties (G′ 0.1–67 MPa). The best block polymers are used in composite cathodes with LiNi0.8Mn0.1Co0.1O2 active material and Li6PS5Cl solid electrolyte–the resulting solid-state batteries demonstrate greater capacity retention than equivalent cells featuring no polymer or commercial polyelectrolytes.read more
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One-Step Synthesis of Linear and Hyperbranched CO2-Based Block Copolymers via Organocatalytic Switchable Polymerization
Maoji Zhao,Shuaishuai Zhu,Guochao Zhang,Yong Wang,Yonggui Liao,Jing-Yi Xu,Xingping Zhou,Xiaolin Xie +7 more
TL;DR: In this article , a three-component polymerization of propylene oxide (PO), phthalic anhydride (PA), and CO2 mediated by commercial Lewis pairs composed of triethyl borane (Et3B) and organic bases was reported, wherein the chemoselectivity over the reaction and Lewis basicity of the cocatalysts exhibit a negative correlation.
Journal ArticleDOI
The Stabilizing of 1T-MoS2 for All-Solid-State Lithium-Ion Batteries
TL;DR: In this article , the 1T-MoS2-600 interlayer spacing was increased to 0.95 nm, which achieved a capacity of 406 mA h g−1 after 50 cycles.
Journal ArticleDOI
Feasible Approaches for Anode-Free Lithium-Metal Batteries as Next Generation Energy Storage Systems
TL;DR: In this paper , the reversibility of anode-free lithium-metal batteries (AFLMBs) with different type of electrolytes is investigated. But, serious deterioration that occurs at the interface of the anode lowers the battery and reduces the battery performance.
Journal ArticleDOI
Dynamic Hydrogen Bonds Network Modulator of Bismuth-Antimony Complex Anode for Self-healable and Wider Temperature Adaptive Potassium Ion Batteries.
TL;DR: In this article , a flexible-robust Bi0.67Sb1.33S3/PET@PTA with stable sulphide radicals is proposed, which is enabled with prominent self-healing ability, high K+ ion transfer number of 0.84, and wider temperature adaptability, benefiting from additional binding sites and tailored spin state via smart hydrogen bonds exchange.
Journal ArticleDOI
Tuning the Covalent Coupling Degree between the Cathode and Electrolyte for Optimized Interfacial Resistance in Solid-State Lithium Batteries.
TL;DR: In this paper , the authors proposed a strategy for introducing a class of covalent interactions with varying coupling degrees at the cathode/SSE interface, which significantly reduced interfacial impedances by strengthening the interactions between the battery and SSE.
References
More filters
Journal ArticleDOI
A solid future for battery development
TL;DR: In this article, solid-state batteries have recently attracted great interest as potentially safe and stable high-energy storage systems, but key issues remain unsolved, hindering full-scale commercialization.
Journal ArticleDOI
Poly(ethylene oxide)-based electrolytes for lithium-ion batteries
Zhigang Xue,Dan He,Xiaolin Xie +2 more
TL;DR: In this article, a review of the recent developments and issues concerning polyethylene oxide (PEO) based electrolytes for lithium-ion batteries is presented, including blending, modifying and making PEO derivatives.
Journal ArticleDOI
Single-ion BAB triblock copolymers as highly efficient electrolytes for lithium-metal batteries
Renaud Bouchet,Sébastien Maria,Rachid Meziane,Abdelmaula Aboulaich,Livie Liénafa,Jean-Pierre Bonnet,Trang N. T. Phan,Denis Bertin,Didier Gigmes,Didier Devaux,Renaud Denoyel,Michel Armand +11 more
TL;DR: A multifunctional single-ion polymer electrolyte based on polyanionic block copolymers comprising polystyrene segments overcomes most of the above limitations, with a lithium-ion transport number close to unity, excellent mechanical properties and an electrochemical stability window spanning 5 V versus Li(+)/Li.
Journal ArticleDOI
Fundamentals of inorganic solid-state electrolytes for batteries
Theodosios Famprikis,Theodosios Famprikis,Theodosios Famprikis,Pieremanuele Canepa,Pieremanuele Canepa,Pieremanuele Canepa,James A. Dawson,James A. Dawson,M. Saiful Islam,M. Saiful Islam,Christian Masquelier,Christian Masquelier +11 more
TL;DR: This Review describes recent progress in the fundamental understanding of inorganic solid electrolytes by addressing key issues in the areas of multiscale ion transport, electrochemical and mechanical properties, and current processing routes.
Journal ArticleDOI
Guidelines and trends for next-generation rechargeable lithium and lithium-ion batteries.
TL;DR: This review summarizes the current trends and provides guidelines towards achieving next-generation rechargeable Li and Li-ion batteries with higher energy densities, better safety characteristics, lower cost and longer cycle life by addressing batteries using high-voltage cathodes, metal fluoride electrodes, chalcogen electrodes, Li metal anodes, high-capacity anodes as well as useful electrolyte solutions.
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