4.7 Article

Role of Intra-Domain Heterogeneity on Ion and Polymer Dynamics in Block Polymer Electrolytes: An Approach for Spatially Resolving Dynamics and Ion Transport

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Polymer Science

Understanding Interfacial Block Copolymer Structure and Dynamics

Monojoy Goswami et al.

Summary: The structure and dynamics of a block copolymer were studied to understand the effect of an interfacial block on chain dynamics. It was found that the interfacial rubbery block exhibited slower dynamics and confined layered morphologies, while the chain-end rubbery block dispersed in the rubbery matrix showed faster dynamics. The dynamical slowing at the interface was observed only at length scales larger than the characteristic segmental length, and the disparity between interfacial and chain-end dynamics increased with increasing length.

MACROMOLECULES (2023)

Article Polymer Science

Understanding Lithium-Ion Dynamics in Single-Ion and Salt-in- Polymer Perfluoropolyethers and Polyethyleneglycol Electrolytes Using Solid-State NMR

Chibueze V. Amanchukwu et al.

Summary: Lithium metal batteries have the potential to revolutionize energy storage and electric transportation, but face challenges in morphology and electro-chemo-mechanics. Polymer-based solid-state electrolytes show promise in replacing liquid electrolytes, but have issues with ionic conductivity and stability. Perfluoropolyether (PFPE)-based electrolytes have improved oxidative stability, but little is known about their lithium solvation and transport mechanism. This study uses solid-state magic angle spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy to investigate lithium cation environment and mobility in PFPE electrolytes and compare it to polyethylene glycol (PEG) electrolytes. The results show weaker interaction between lithium cation and PFPE polymer backbone, resulting in stronger ion pairing. The mobility of lithium ions is lower in PFPE electrolytes, attributed to polymer backbone fluctuations. Differences in polymer backbones have a greater effect on mobility than differences in ion binding modes within each polymer class. The ability to study polymer electrolytes in their native state opens opportunities for development of next-generation lithium metal batteries.

MACROMOLECULES (2023)

Article Polymer Science

Role of Intradomain Heterogeneity on Ion and Polymer Dynamics in Block Polymer Electrolytes: Investigating Interfacial Mobility and Ion-Specific Dynamics and Transport

Nicholas F. Pietra et al.

Summary: Block polymers have the potential to be used as solid-state battery electrolytes due to their optimized conductive and mechanical properties. This study investigates the role of molecular structure on ion transport and local ion dynamics in a polystyrene-block-poly(oligo-oxyethylene methacrylate) (PS-b-POEM) electrolyte doped with various lithium salts. The results show that increasing the size of the anion delocalizes the anion charge, reducing the coupling between salt ions while increasing the coupling between ions and polymer chain motions. This creates a more mobile overall environment.

MACROMOLECULES (2023)

Review Chemistry, Multidisciplinary

Nanostructured Block Polymer Electrolytes: Tailoring Self-Assembly to Unlock the Potential in Lithium-Ion Batteries

Priyanka M. Ketkar et al.

Summary: The research discusses the self-assembly behavior of ion-containing solid block polymer (BP) electrolytes and their potential to improve the functionality and safety of lithium-ion batteries. Enhancements in ionic conductivity and processability of BP electrolytes can be achieved through control of the intra-domain and multi-grain structure.

ACCOUNTS OF CHEMICAL RESEARCH (2021)

Article Chemistry, Multidisciplinary

Molecular Level Differences in Ionic Solvation and Transport Behavior in Ethylene Oxide-Based Homopolymer and Block Copolymer Electrolytes

Daniel Sharon et al.

Summary: Block copolymer electrolytes blending with lithium bis(trifluoromethanesulfonyl)imide show promising potential for solid-state Li batteries. When the Li/EO ratio reaches 1/5, the conductivity of PEO-LiTFSI drops significantly while that of SEO-LiTFSI remains constant, revealing differences in their behavior at higher salt concentrations.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2021)

Article Polymer Science

Role of Molecular Architecture on Ion Transport in Ethylene oxide-Based Polymer Electrolytes

Chuting Deng et al.

Summary: This study aims to develop a detailed mechanistic understanding of the role of a graft polymer architecture on lithium ion transport in polymer electrolytes. Through experimental characterization and molecular dynamics simulations, it was found that POEM exhibits different relaxation processes and ion coordination behavior compared to PEO, providing valuable insights for designing more effective solid polymer electrolytes.

MACROMOLECULES (2021)

Article Polymer Science

Molecular Dynamics Simulations of Ion-Containing Polymers Using Generic Coarse-Grained Models

Kuan-Hsuan Shen et al.

Summary: Molecular dynamics simulations with generic bead-spring models have been used to study the molecular-scale behavior and structure-property relationships of various polymeric systems. While this coarse-grained modeling approach provides computational efficiency and flexibility in considering different chemistries, additional complexity may be needed to appropriately describe phenomena in ion-containing polymeric systems.

MACROMOLECULES (2021)

Article Polymer Science

Quantifying the Effects of Monomer Segment Distributions on Ion Transport in Tapered Block Polymer Electrolytes

Priyanka M. Ketkar et al.

Summary: In this study, the impact of structural characteristics of tapered block polymers on ionic conductivity was investigated, revealing that the normal-tapered structure has a favorable effect on improving ion transport conditions.

MACROMOLECULES (2021)

Review Chemistry, Applied

A review of lithium-ion battery safety concerns: The issues, strategies, and testing standards

Yuqing Chen et al.

Summary: Efficient and reliable energy storage systems are essential for modern society, with lithium-ion batteries (LIBs) being widely used but facing safety challenges. This review examines LIB safety issues, strategies for improvement, and current testing standards, providing insights into potential future developments for safer LIBs.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Multidisciplinary

Effect of Building Block Connectivity and Ion Solvation on Electrochemical Stability and Ionic Conductivity in Novel Fluoroether Electrolytes

Peiyuan Ma et al.

Summary: Novel fluoroether compounds with reversed building block connectivity show high ionic conductivity and oxidative stability, with potential for various applications. Raman and other spectroscopic techniques reveal that the solvation of lithium ions is controlled by fluoroether molecular structure, and the oxidative stability correlates with the free solvent fraction. These electrolytes have the ability to be cycled repeatedly with lithium metal and other battery chemistries, indicating a promising development in next-generation battery technologies.

ACS CENTRAL SCIENCE (2021)

Article Chemistry, Physical

Role of solvation site segmental dynamics on ion transport in ethylene-oxide based side-chain polymer electrolytes

Peter Bennington et al.

Summary: In studying graft polyether electrolytes for ion conduction, it is found that variations in side-chain length can significantly impact conductivity, ion interactions, and polymer dynamics. Within a certain range, ion conductivity is primarily influenced by the segmental mobility of EO units within the side chains.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Article Polymer Science

Polymer Dynamics in Block Copolymer Electrolytes Detected by Neutron Spin Echo

Whitney S. Loo et al.

ACS MACRO LETTERS (2020)

Article Polymer Science

Monomer Sequence Effects on Interfacial Width and Mixing in Self-Assembled Diblock Copolymers

Anastasia L. Patterson et al.

MACROMOLECULES (2020)

Article Chemistry, Multidisciplinary

Intrinsic Ion Transport Properties of Block Copolymer Electrolytes

Daniel Sharon et al.

ACS NANO (2020)

Article Multidisciplinary Sciences

Energy storage emerging: A perspective from the Joint Center for Energy Storage Research

Lynn Trahey et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Article Chemistry, Multidisciplinary

Concentration and velocity profiles in a polymeric lithium-ion battery electrolyte

Hans-Georg Steinruck et al.

ENERGY & ENVIRONMENTAL SCIENCE (2020)

Article Polymer Science

Estimating the segregation strength of microphase-separated diblock copolymers from the interfacial width

Adam B. Burns et al.

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS (2019)

Article Polymer Science

Globally Suppressed Dynamics in Ion-Doped Polymers

Michael A. Webb et al.

ACS MACRO LETTERS (2018)

Article Chemistry, Multidisciplinary

Direct Measurement of the Local Glass Transition in Self-Assembled Copolymers with Nanometer Resolution

Dane Christie et al.

ACS CENTRAL SCIENCE (2018)

Article Polymer Science

Direct Mapping of Nanoscale Viscoelastic Dynamics at Nanofiller/Polymer Interfaces

Hung K. Nguyen et al.

MACROMOLECULES (2018)

Article Physics, Multidisciplinary

Role of Chain Connectivity across an Interface on the Dynamics of a Nanostructured Block Copolymer

Dane Christie et al.

PHYSICAL REVIEW LETTERS (2018)

Article Chemistry, Physical

Mechanism of ion transport in perfluoropolyether electrolytes with a lithium salt

Ksenia Timachova et al.

SOFT MATTER (2017)

Article Polymer Science

Influence of Dielectric Constant on Ionic Transport in Polyether-Based Electrolytes

Bill K. Wheatle et al.

ACS MACRO LETTERS (2017)

Article Chemistry, Physical

Harnessing the Power of Plastics: Nanostructured Polymer Systems in Lithium-Ion Batteries

Melody A. Morris et al.

ACS ENERGY LETTERS (2017)

Article Chemistry, Physical

Why many polymers are so fragile: A new perspective

C. Dalle-Ferrier et al.

JOURNAL OF CHEMICAL PHYSICS (2016)

Article Polymer Science

Influence of Molecular Weight and Degree of Segregation on Local Segmental Dynamics of Ordered Block Copolymers

Vaidyanathan Sethuraman et al.

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS (2016)

Article Chemistry, Physical

Segmental dynamics in lamellar phases of tapered copolymers

Vaidyanathan Sethuraman et al.

SOFT MATTER (2016)

Article Materials Science, Multidisciplinary

Using tapered interfaces to manipulate nanoscale morphologies in ion-doped block polymers

Wei-Fan Kuan et al.

MRS COMMUNICATIONS (2015)

Review Polymer Science

Block Copolymer Electrolytes for Rechargeable Lithium Batteries

Wen-Shiue Young et al.

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS (2014)

Review Materials Science, Multidisciplinary

Polymer Electrolytes

Daniel T. Hallinan et al.

ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 43 (2013)

Article Polymer Science

Ionic Conductivity of Low Molecular Weight Block Copolymer Electrolytes

Rodger Yuan et al.

MACROMOLECULES (2013)

Article Polymer Science

Mechanisms Underlying Ion Transport in Lamellar Block Copolymer Membranes

Venkat Ganesan et al.

ACS MACRO LETTERS (2012)

Article Chemistry, Multidisciplinary

Effect of Ion Distribution on Conductivity of Block Copolymer Electrolytes

Enrique D. Gomez et al.

NANO LETTERS (2009)

Article Physics, Condensed Matter

Why many polymers are so fragile

A. P. Sokolov et al.

JOURNAL OF PHYSICS-CONDENSED MATTER (2007)

Article Chemistry, Physical

Changes in thermodynamic interactions at highly immiscible polymer/polymer interfaces due to deuterium labeling

Shane E. Harton et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2006)