Femtosecond laser structuring of graphite anodes for improved lithium-ion batteries: Ablation characteristics and process design

材料科学 阳极 电解质 电极 锂(药物) 激光烧蚀 激光器 光电子学 石墨 储能 复合材料 光学 功率(物理) 内分泌学 物理化学 化学 物理 医学 量子力学
作者
Jan Bernd Habedank,J. G. Endres,Patrick Schmitz,Michael F. Zaeh,H. Huber
出处
期刊:Journal of Laser Applications [Laser Institute of America]
卷期号:30 (3) 被引量:66
标识
DOI:10.2351/1.5040611
摘要

Lithium-ion batteries are widely used as energy storage devices due to their high energy density and versatile applicability. Key components of lithium-ion batteries are electrically isolated electrodes and a liquid electrolyte solution which enables ion transport between the electrodes. Laser structuring of electrodes is a promising approach to enhance the high-current capability of lithium-ion batteries by reducing cell internal resistances, as a larger contact area of the active material with the electrolyte solution is created. In the work described here, lithium-ion battery anodes were structured by locally ablating small fractions of the coating using femtosecond laser pulses with infrared wavelengths. A study on ablation characteristics depending on different process parameters such as laser fluence and repetition rate was performed. Special focus was on the ablation efficiency, enabling an optimized process design. The influence of the electrode composition was taken into account by studying the ablation behavior at a varying binder content. Evenly distributed micro holes were chosen in order to keep active material removal at a minimum. To evaluate the effect of structured graphite anodes on the electrochemical properties of lithium-ion batteries, test cells were manufactured and galvanostatically cycled at different current rates. Results show improvements in high-current performance which is expressed by an increased discharge capacity yield.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
du发布了新的文献求助30
刚刚
ainibb完成签到 ,获得积分10
1秒前
今后应助NZH采纳,获得10
2秒前
4秒前
innocence@x完成签到,获得积分10
4秒前
彭于晏应助Hehhhh采纳,获得10
7秒前
YukiXu完成签到 ,获得积分10
7秒前
啦啦啦123完成签到,获得积分10
9秒前
wqy发布了新的文献求助10
9秒前
李健应助爱撒娇的孤丹采纳,获得10
10秒前
爆米花应助ZrY采纳,获得10
11秒前
英姑应助1234567采纳,获得10
12秒前
du完成签到,获得积分20
13秒前
jeff完成签到,获得积分10
13秒前
14秒前
科研通AI2S应助ly采纳,获得10
14秒前
森森完成签到 ,获得积分10
14秒前
joyboysimba发布了新的文献求助10
15秒前
Singularity应助晨曦采纳,获得20
16秒前
不可思宇完成签到,获得积分10
17秒前
jeff发布了新的文献求助20
19秒前
丘山完成签到,获得积分10
19秒前
QL完成签到 ,获得积分10
20秒前
jarky完成签到,获得积分10
21秒前
若水完成签到,获得积分0
21秒前
搜集达人应助du采纳,获得10
23秒前
晨曦给晨曦的求助进行了留言
24秒前
丘比特应助潇洒的语蝶采纳,获得10
24秒前
汉堡包应助joyboysimba采纳,获得10
24秒前
积极的青丝完成签到,获得积分10
25秒前
29秒前
思源应助科研通管家采纳,获得10
29秒前
Akim应助科研通管家采纳,获得10
29秒前
乐乐应助科研通管家采纳,获得10
29秒前
CodeCraft应助科研通管家采纳,获得10
29秒前
华仔应助科研通管家采纳,获得10
29秒前
科研通AI2S应助科研通管家采纳,获得10
29秒前
今后应助科研通管家采纳,获得10
29秒前
爆米花应助科研通管家采纳,获得10
29秒前
29秒前
高分求助中
Sustainability in Tides Chemistry 2800
Kinetics of the Esterification Between 2-[(4-hydroxybutoxy)carbonyl] Benzoic Acid with 1,4-Butanediol: Tetrabutyl Orthotitanate as Catalyst 1000
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
Rechtsphilosophie 1000
Bayesian Models of Cognition:Reverse Engineering the Mind 888
Handbook of Qualitative Cross-Cultural Research Methods 600
Very-high-order BVD Schemes Using β-variable THINC Method 568
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3137539
求助须知:如何正确求助?哪些是违规求助? 2788516
关于积分的说明 7787054
捐赠科研通 2444818
什么是DOI,文献DOI怎么找? 1300043
科研通“疑难数据库(出版商)”最低求助积分说明 625784
版权声明 601023