Deciphering the Competing Mechanisms of Li Microstructure Formation in Solid Electrolytes with Nuclear Magnetic Resonance Spectroscopy (NMR) and Imaging (MRI)
利用核磁共振波谱 (NMR) 和成像 (MRI) 解读固体电解质中锂微结构形成的竞争机制
基本信息
- 批准号:2319151
- 负责人:
- 金额:$ 47.91万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2024
- 资助国家:美国
- 起止时间:2024-01-15 至 2026-12-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
PART 1: NON-TECHNICAL SUMMARY This project tackles a critical challenge in battery technology that is widely used daily: the formation of tiny structures, called dendrites, within batteries. These dendrites can cause short circuits, limiting the power and lifespan of solid-state batteries, which are crucial for powering a sustainable energy future. The team aims to understand how these dendrites form and develop mitigating strategies. The research focuses on Li7La3Zr2O12 (LLZO), an important component in solid-state batteries. By using advanced techniques like nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI), the team hopes to uncover the root causes of dendrite formation. This understanding is vital for designing batteries with longer lifespans and higher efficiency.The outcomes of this research will enhance our understanding of battery technology and contribute to developing more efficient and sustainable energy storage solutions, directly benefiting society at large. The project also aims to develop new tools to study a broad range of functional materials, contributing to scientific knowledge in multiple fields. Moreover, it will establish a new course on advanced magnetic resonance techniques and broaden the participation of underrepresented groups in scientific research via several educational and outreach platforms. By addressing the major challenges associated with rechargeable batteries, this project will promote the progress of science and technology and advance the national welfare. PART 2: TECHNICAL SUMMARYLi microstructure formation in solid electrolytes results in battery short circuits, limiting the power density and lifespan of all-solid-state batteries (ASSBs). Unlike extensively studied liquid systems, dendrite formation in solids is complex and challenging to characterize. This project proposes two mechanisms for dendrite formation in solid electrolytes: non-uniform Li plating at the electrode-electrolyte interface (Mechanism 1) and reduction of Li+ ions at grain boundaries within solid electrolytes (Mechanism 2). While Mechanism 1 has been explored using electron and optical microscopy, Mechanism 2 remains less understood due to challenges in noninvasively probing bulk solids. To address this, the proposal employs nuclear magnetic resonance spectroscopy (NMR) and imaging (MRI) techniques. Specifically, the project aims to determine the source of Li dendrites using tracer-exchange NMR, create 3D images of dendrites within solid electrolytes using noninvasive 7Li/6Li MRI, and monitor real-time dendrite formation using in situ NMR and MRI, complemented by electron paramagnetic resonance studies. The chosen material system, Li7La3Zr2O12 (LLZO) and its derivatives represent a prominent oxide-based solid electrolyte with known dendrite formation issues. The research aims to distinguish between the proposed mechanisms and determine the dominant one with spatial and temporal resolution under varied conditions relevant to ASSB electrochemical cycling. Investigations on LLZO derivatives with diverse electronic conductivities will provide insights into the role of electronic conductivity in determining dendrite formation mechanisms and their distribution. The outcomes of this work will contribute to understanding and mitigating dendrite-related challenges, ultimately advancing the development of safer and more efficient solid-state batteries.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
第1部分:非技术概述这个项目解决了日常广泛使用的电池技术中的一个关键挑战:电池内微小结构的形成,称为树枝状结构。这些树枝会导致短路,限制固态电池的功率和寿命,而固态电池对于为可持续的能源未来提供动力至关重要。该团队的目标是了解这些树突是如何形成的,并制定缓解策略。本文以固体电池中的重要组成部分Li7La3Zr2O12(LLZO)为研究对象。通过使用核磁共振(核磁共振)和磁共振成像(MRI)等先进技术,该团队希望揭示树枝状晶体形成的根本原因。这一认识对于设计寿命更长、效率更高的电池至关重要。这项研究的结果将增进我们对电池技术的了解,并有助于开发更高效、更可持续的储能解决方案,直接造福整个社会。该项目还旨在开发新的工具来研究广泛的功能材料,促进多个领域的科学知识。此外,它还将开设一门关于先进磁共振技术的新课程,并通过几个教育和外联平台扩大代表性不足群体对科学研究的参与。通过解决与充电电池相关的主要挑战,该项目将促进科技进步,增进国民福利。第二部分:固体电解液中微结构的形成导致电池短路,限制了全固态电池的功率密度和寿命。与被广泛研究的液体系统不同,固体中的树枝晶形成是复杂的,并且具有挑战性。本项目提出了两种在固体电解液中形成枝晶的机制:在电极-电解液界面上不均匀地镀锂(机制1)和在固体电解液中的晶界上还原Li+离子(机制2)。虽然已经使用电子显微镜和光学显微镜探索了机制1,但由于在非侵入性探测块状固体方面的挑战,机制2仍然知之甚少。为了解决这一问题,该提案采用了核磁共振(核磁共振)和成像(MRI)技术。具体地说,该项目旨在使用示踪剂交换核磁共振确定Li树枝晶的来源,使用非侵入性7Li/6Li MRI创建固体电解质内树枝晶的3D图像,并使用原位核磁共振和MRI实时监控树枝晶的形成,辅之以电子顺磁共振研究。所选择的材料体系Li7La3Zr2O12(LLZO)及其衍生物代表了一种突出的氧化物基固体电解质,具有已知的树枝晶形成问题。本研究旨在区分所提出的机制,并在与ASSB电化学循环相关的不同条件下确定具有空间和时间分辨率的主导机制。对具有不同电子电导率的LLZO衍生物的研究将有助于深入了解电子电导率在决定树枝晶形成机制及其分布中的作用。这项工作的成果将有助于了解和缓解树枝晶相关的挑战,最终推动更安全和更高效的固态电池的开发。这一奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Yan-Yan Hu其他文献
Dendrite formation in solid-state batteries arising from lithium plating and electrolyte reduction
固态电池中由于锂电镀和电解质还原而产生的枝晶形成
- DOI:
10.1038/s41563-024-02094-6 - 发表时间:
2025-01-31 - 期刊:
- 影响因子:38.500
- 作者:
Haoyu Liu;Yudan Chen;Po-Hsiu Chien;Ghoncheh Amouzandeh;Dewen Hou;Erica Truong;Ifeoluwa P. Oyekunle;Jamini Bhagu;Samuel W. Holder;Hui Xiong;Peter L. Gor’kov;Jens T. Rosenberg;Samuel C. Grant;Yan-Yan Hu - 通讯作者:
Yan-Yan Hu
Interrupted anion-network enhanced Lisup+/sup-ion conduction in Lisub3+y/subPOsub4/subIsuby/sub
在 Li₃₊ᵧPO₄Isuby 中,中断的阴离子网络增强了 Li⁺离子传导。
- DOI:
10.1016/j.ensm.2022.06.026 - 发表时间:
2022-10-01 - 期刊:
- 影响因子:20.200
- 作者:
Sawankumar V. Patel;Erica Truong;Haoyu Liu;Yongkang Jin;Benjamin L. Chen;Yan Wang;Lincoln Miara;Ryounghee Kim;Yan-Yan Hu - 通讯作者:
Yan-Yan Hu
ウガンダ・カリンズ森林におけるブルーモンキー(Cercopithecusmitis)による肉食
乌干达卡林斯森林中的蓝猴 (Cercopithecusmitis) 食肉
- DOI:
- 发表时间:
2010 - 期刊:
- 影响因子:0
- 作者:
Rong Zhang;Tomoaki Ichijo;Yan-Yan Hu;Hong-Wei Zhou;Nobuyasu Yamaguchi;Masao Nasu;Gong-Xiang Chen;田代靖子 - 通讯作者:
田代靖子
Hydrogen in energy and information sciences
- DOI:
10.1557/s43577-024-00714-9 - 发表时间:
2024-04-22 - 期刊:
- 影响因子:4.900
- 作者:
Heejung W. Chung;Bernadette Cladek;Yong-Yun Hsiau;Yan-Yan Hu;Katharine Page;Nicola H. Perry;Bilge Yildiz;Sossina M. Haile - 通讯作者:
Sossina M. Haile
Integrated therapeutic strategies for various cutaneous malignancies: Advances and challenges of multifunctional microneedle patches toward clinical translation
多种皮肤恶性肿瘤的综合治疗策略:多功能微针贴片迈向临床转化的进展与挑战
- DOI:
10.1016/j.cej.2024.153033 - 发表时间:
2024-08-15 - 期刊:
- 影响因子:13.200
- 作者:
Yan-Yan Hu;Qiang Jin;Ji Wang;Su-Fan Wu;Yong He;Pei-Hong Jin - 通讯作者:
Pei-Hong Jin
Yan-Yan Hu的其他文献
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{{ truncateString('Yan-Yan Hu', 18)}}的其他基金
CAREER: Leveraging Defects & Disorder for Fast Ion Conduction
职业生涯:利用缺陷
- 批准号:
1847038 - 财政年份:2019
- 资助金额:
$ 47.91万 - 项目类别:
Continuing Grant
Correlations of Li Deficiency, Diffusion, and Interfacial Impedance in Solid-State Batteries Probed by In Situ Tracer Exchange NMR and Depth-Profiling MRI Combined with Modeling
通过原位示踪交换 NMR 和深度剖面 MRI 结合建模探测固态电池中锂缺乏、扩散和界面阻抗的相关性
- 批准号:
1808517 - 财政年份:2018
- 资助金额:
$ 47.91万 - 项目类别:
Standard Grant
SusChEM: Ionic Conduction Mechanisms in Low-cost and Rare-earth-free Fast Ion Conductors
SusChEM:低成本、无稀土快离子导体中的离子传导机制
- 批准号:
1508404 - 财政年份:2015
- 资助金额:
$ 47.91万 - 项目类别:
Standard Grant
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