Cathodes pinpoints for the next generation of energy storage devices: the LiFePO4 case study

阴极 储能 材料科学 计算机科学 工程物理 电气工程 工程类 物理 功率(物理) 热力学
作者
Beatriz Arouca Maia,Beatriz Moura Gomes,António Nuno Guerreiro,Raquel M. Santos,Maria Helena Braga
出处
期刊:JPhys materials [IOP Publishing]
卷期号:7 (2): 025001-025001 被引量:5
标识
DOI:10.1088/2515-7639/ad218c
摘要

Abstract There are still essential aspects regarding cathodes requiring a comprehensive understanding. These include identifying the underlying phenomena that prevent reaching the theoretical capacity, explaining irreversible losses, and determining the cut-off potentials at which batteries should be cycled. We address these inquiries by investigating the cell’s capacity and phase dynamics by looking into the transport properties of electrons. This approach underlines the crucial role of electrons in influencing battery performance, similar to their significance in other materials and devices such as transistors, thermoelectrics, or superconductors. We use lithium iron phosphate LFP as a case study to demonstrate that understanding the electrochemical cycling behavior of a battery cell, particularly a Li//LFP configuration, hinges on factors like the total local potentials used to calculate chemical potentials, electronic density of states (DOS), and charge carrier densities. Our findings reveal that the stable plateau potential difference is 3.42 V, with maximum charge and minimum discharge potentials at 4.12 V and 2.80 V, respectively. The study illustrates the dynamic formation of metastable phases at a plateau voltage exceeding 3.52 V. Moreover, we establish that determining the working chemical potentials of elements like Li and Al can be achieved by combining their workfunction and DOS analysis. Additionally, we shed light on the role of carbon black beyond conductivity enhancement. Through Density functional theory (DFT) calculations and experimental methods involving scanning Kelvin probe (SKP) and electrochemical analysis, we comprehensively examine various materials, including Li, C, Al, Cu, LFP, FePO 4 , Li 0.25 FePO 4 , polyvinylidene fluoride, and Li 6 PS 5 Cl. The insights derived from this study, which solely rely on electrical properties, have broad applicability to all cathodes and batteries. They provide valuable information for efficiently selecting optimal formulations and conditions for cycling batteries.
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
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
jwxstc完成签到,获得积分20
刚刚
Owen应助张亚召采纳,获得10
刚刚
2秒前
2秒前
blue发布了新的文献求助30
2秒前
Yellow完成签到,获得积分10
3秒前
量子星尘发布了新的文献求助10
3秒前
冷酷雅容发布了新的文献求助30
3秒前
5秒前
惜名发布了新的文献求助10
5秒前
英俊的胜发布了新的文献求助10
5秒前
Aurora发布了新的文献求助10
6秒前
科研通AI5应助孟子豪采纳,获得10
7秒前
7秒前
7秒前
8秒前
科研通AI5应助Distance采纳,获得10
8秒前
ZMY发布了新的文献求助10
9秒前
9秒前
bkagyin应助霍冷荷采纳,获得10
9秒前
优美亦云完成签到,获得积分10
9秒前
10秒前
沉静成仁完成签到,获得积分10
10秒前
11秒前
冷酷雅容完成签到,获得积分10
12秒前
蝙蝠完成签到,获得积分20
12秒前
量子星尘发布了新的文献求助150
12秒前
12秒前
12秒前
12秒前
13秒前
wenqin发布了新的文献求助10
13秒前
小猫饼干发布了新的文献求助20
14秒前
cc关注了科研通微信公众号
15秒前
LT发布了新的文献求助30
15秒前
张亚召发布了新的文献求助10
16秒前
惜名发布了新的文献求助10
16秒前
17秒前
kongkong完成签到,获得积分10
17秒前
17秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2700
Neuromuscular and Electrodiagnostic Medicine Board Review 1000
Statistical Methods for the Social Sciences, Global Edition, 6th edition 600
こんなに痛いのにどうして「なんでもない」と医者にいわれてしまうのでしょうか 510
Walter Gilbert: Selected Works 500
An Annotated Checklist of Dinosaur Species by Continent 500
岡本唐貴自伝的回想画集 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3660105
求助须知:如何正确求助?哪些是违规求助? 3221425
关于积分的说明 9740535
捐赠科研通 2930781
什么是DOI,文献DOI怎么找? 1604673
邀请新用户注册赠送积分活动 757396
科研通“疑难数据库(出版商)”最低求助积分说明 734406