Characterization of 3D architectures of lithium-ion micro-batteries fabricated by laser-assisted manufacturing

激光辅助制造锂离子微电池的 3D 结构表征

• 批准号: 392322200
• 负责人: Professor Dr. Wilhelm Pfleging
• 金额: --
• 依托单位: National Natural Science Foundation of China
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/392322200?language=en
• 关键词: Characterization; 3D; architectures; lithium; ion

The project addresses basic and application oriented scientific questions in the field of energy storage materials with 3D electrode architecture. In this joint effort, modeling and simulation as well as fabrication and characterization will contribute equally. Our work is aiming at the scientific foundations of processes, materials and devices that are needed for future battery technology. The overall goal of this project to provide both experimental and theoretical guidelines for the development of high energy and high power density 3D micro-batteries.To achieve this, a number of sub-objectives have to be fulfilled:1. Using ultrafast laser ablation/patterning of nickel-enriched Li(NiMnCo)O2 positive thick film electrodes and Si/C negative thick film electrodes, 3D electrode architectures with capacities up to 1-5 Ah will be prepared and optimized regarding an excellent cycle stability (>5000) under high rates (> 1C) while maintaining 80% of the initial capacity. 2. Using 3D additive printing method and laser sintering methods in order to realize 3D structured micro-batteries with capacities up to 1-5Ah through optimizing of the structure and design of integrated electrodes.3. Combination of 3D additive printing and ultrafast laser patterning for achieving unique synergetic effects with respect to structural accuracy and designing flexibility for 3D integrated electrodes and complete full cells. 4. Surface modification by Atomic Layer Deposition for precise adjustment of electrochemical performance of 3D electrode architectures.5. Realization of optimized high energy/power densities in Atomic Layer Deposition modified 3D structured batteries by identification of structural and chemical effects from atomic scale, nanometer scale, up to the micrometer scale using real-time studies of fine structure evolution mechanisms with in-situ electron microscopy. Post-mortem studies using Laser-induced Breakdown Spectroscopy will be used to extrapolate chemical effects on micrometer, millimeter and entire electrode scale.Our multidisciplinary approach will focus on 3D printing, laser-assisted materials processing on micro- and nano-scale, interface modification by atomic layer deposition, in-situ electron microscopy method and post mortem analysis, for a systematic study of the relationship between the electrochemical performance and the 3D microstructure of batteries. Fundamental questions on electron/Li-ion transportations mechanisms in 3D electrode architectures and interfaces will be investigated. The project will combine accurate experimental characterization and theoretical simulation/calculation to speed up the development of advanced cell architectures for lithium-ion batteries. The new ideas, models, methods arise from the project will upgrade the core competitiveness, which positions China and Germany the world's advanced role in the field of renewable energy and energy storage systems.

该项目解决了具有3D电极结构的储能材料领域的基础和应用导向的科学问题。在这一共同努力中，建模和仿真以及制造和表征将做出同样的贡献。我们的工作旨在为未来电池技术所需的工艺、材料和设备奠定科学基础。本项目的总体目标是为高能量和高功率密度的3D微电池的开发提供实验和理论指导。使用镍富集的Li（NiMnCo）O2正极厚膜电极和Si/C负极厚膜电极的超快激光烧蚀/图案化，将制备具有高达1- 5Ah容量的3D电极架构，并在高倍率（> 1C）下关于优异的循环稳定性（>5000）进行优化，同时保持80%的初始容量。2.采用3D增材打印法和激光烧结法，通过结构优化和电极一体化设计，实现1-5Ah容量的3D结构微电池. 3D增材打印和超快激光图案化相结合，在3D集成电极和完整全电池的结构精度和设计灵活性方面实现独特的协同效应。4.通过原子层沉积进行表面改性，用于精确调整3D电极结构的电化学性能。在原子层沉积改性的3D结构电池中实现优化的高能量/功率密度，通过使用原位电子显微镜实时研究精细结构演变机制来识别从原子尺度、纳米尺度到微米尺度的结构和化学效应。利用激光诱导击穿光谱进行的事后研究将用于推断微米、毫米和整个电极尺度上的化学效应。我们的多学科方法将专注于3D打印、微纳米尺度上的激光辅助材料加工、原子层沉积界面改性、原位电子显微镜方法和事后分析，系统研究电池电化学性能与三维微观结构之间的关系。将研究3D电极结构和界面中电子/锂离子传输机制的基本问题。该项目将联合收割机结合精确的实验表征和理论模拟/计算，以加快锂离子电池先进电池架构的开发。该项目产生的新理念、新模式、新方法将提升核心竞争力，使中国和德国在可再生能源和储能系统领域处于世界领先地位。

项目成果

In Situ SEM Observation of Structured Si/C Anodes Reactions in an Ionic-Liquid-Based Lithium-Ion Battery

• DOI: 10.3390/app9050956
• 发表时间: 2019-03
• 期刊: Applied Sciences
• 作者: Huifeng Shi;Xianqiang Liu;Rui Wu;Yijing Zheng;Yonghe Li;Xiaopeng Cheng;Wilhelm Pfleging;Yuefei Zhang

The Ultrafast Laser Ablation of Li(Ni0.6Mn0.2Co0.2)O2 Electrodes with High Mass Loading

• DOI: 10.3390/app9194067
• 发表时间: 2019-10-01
• 期刊: APPLIED SCIENCES-BASEL
• 影响因子: 2.7
• 作者: Zhu, Penghui;Seifert, Hans Juergen;Pfleging, Wilhelm
• 通讯作者: Pfleging, Wilhelm

3D silicon/graphite composite electrodes for high-energy lithium-ion batteries

• DOI: 10.1016/j.electacta.2019.05.064
• 发表时间: 2019-09
• 期刊: Electrochimica Acta
• 影响因子: 6.6
• 作者: Yijing Zheng;H. Seifert;Huifeng Shi;Yuefei Zhang;C. Kübel;Wilhelm Pfleging

Lithium-Ion Battery—3D Micro-/Nano-Structuring, Modification and Characterization

• DOI: 10.1007/978-3-030-59313-1_11
• 发表时间: 2020
• 作者: Wilhelm Pfleging;P. Gotcu;P. Smyrek;Yijing Zheng;Joong-Kee Lee;H. Seifert

Laser-induced breakdown spectroscopy for the quantitative measurement of lithium concentration profiles in structured and unstructured electrodes

• DOI: 10.1039/c8ta10328c
• 发表时间: 2019-03-14
• 期刊: JOURNAL OF MATERIALS CHEMISTRY A
• 影响因子: 11.9
• 作者: Smyrek, Peter;Bergfeldt, Thomas;Pfleging, Wilhelm
• 通讯作者: Pfleging, Wilhelm