How sintering temperature affects the electrochemical performance of ultra-high nickel (Ni > 0.9) cathode material

阴极 材料科学 烧结 扫描电子显微镜 透射电子显微镜 冶金 化学工程 复合材料 纳米技术 分析化学(期刊) 化学 色谱法 工程类 物理化学
作者
Zhenping Qiu,Zhiwen Wang,Shun Yuan
出处
期刊:Journal of Colloid and Interface Science [Elsevier BV]
卷期号:656: 225-232 被引量:2
标识
DOI:10.1016/j.jcis.2023.11.098
摘要

The burgeoning demand for electric vehicles with extended driving ranges has propelled ongoing development efforts for ultra-high nickel (Ni > 0.9) cathode materials. Despite significant ongoing research focused on Ni-rich cathode materials, a more comprehensive foundational understanding of ultra-high nickel cathode materials is essential. In our research, we employed LiNi0.94Co0.06O2 as a model ultra-high nickel cathode material to systematically delve into the interplay between sintering temperature, structural features, and electrochemical behavior. Within a sintering temperature spectrum of 660–720 °C, we discerned that specimens produced at diminished temperatures manifest a reduced initial discharge capacity yet excel in cycling endurance. In stark contrast, their counterparts produced at augmented temperatures behave inversely. Identifying a singular sintering temperature that achieves equilibrium between initial discharge capacity and cycling performance proves elusive. Through X-ray diffraction and high-resolution transmission electron microscopy, it became evident that samples synthesized at lower temperatures exhibit pronounced lithium-nickel mixing and develop a thicker NiO layer on the surface, leading to compromised initial discharge performance and capacity. Utilizing focused ion beam scanning electron microscopy, differential capacity analysis, and in-situ X-ray diffraction, we confirm that samples synthesized at lower temperatures possess smaller particle sizes, enabling them to withstand volumetric expansion stress during cycling, resulting in enhanced cycling performance. In the realm of ultra-high nickel cathode materials, elevating the sintering temperature is a conduit to superior initial discharge efficiency and capacity. Yet, the imperative of preserving diminutive particle dimensions, as a stratagem to bolster cycling performance, stands out as a pivotal research frontier.
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
1秒前
xiao完成签到 ,获得积分10
2秒前
Fossil@1017完成签到,获得积分10
5秒前
情怀应助小远远采纳,获得10
5秒前
www发布了新的文献求助10
7秒前
萝卜丁完成签到 ,获得积分0
8秒前
9秒前
9秒前
Jj完成签到,获得积分10
10秒前
11秒前
atom完成签到,获得积分10
13秒前
14秒前
Wesley完成签到,获得积分10
14秒前
小宝妈完成签到,获得积分10
14秒前
高大豌豆发布了新的文献求助10
15秒前
15秒前
conny应助万幸鹿采纳,获得10
15秒前
结实的青荷完成签到,获得积分10
16秒前
17秒前
微笑的井完成签到 ,获得积分10
17秒前
明月照我程完成签到,获得积分10
19秒前
保洁王姐完成签到,获得积分10
20秒前
huangyao完成签到 ,获得积分10
21秒前
zho应助呀呼采纳,获得10
24秒前
万幸鹿完成签到,获得积分10
25秒前
郑zhenglanyou完成签到 ,获得积分10
25秒前
a成完成签到,获得积分10
26秒前
speed完成签到,获得积分10
26秒前
JerryZ发布了新的文献求助10
27秒前
成就的雪莲完成签到,获得积分10
29秒前
duj622完成签到 ,获得积分10
30秒前
30秒前
田様应助www采纳,获得10
32秒前
彭于晏应助虚拟电子小熊采纳,获得10
33秒前
aertims发布了新的文献求助10
34秒前
34秒前
皇帝的床帘完成签到,获得积分10
34秒前
不舍天真完成签到,获得积分10
34秒前
36秒前
yummy完成签到,获得积分10
38秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2700
Neuromuscular and Electrodiagnostic Medicine Board Review 1000
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
The First Nuclear Era: The Life and Times of a Technological Fixer 500
Unusual formation of 4-diazo-3-nitriminopyrazoles upon acid nitration of pyrazolo[3,4-d][1,2,3]triazoles 500
岡本唐貴自伝的回想画集 500
Distinct Aggregation Behaviors and Rheological Responses of Two Terminally Functionalized Polyisoprenes with Different Quadruple Hydrogen Bonding Motifs 450
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 3671619
求助须知:如何正确求助?哪些是违规求助? 3228325
关于积分的说明 9779523
捐赠科研通 2938636
什么是DOI,文献DOI怎么找? 1610158
邀请新用户注册赠送积分活动 760547
科研通“疑难数据库(出版商)”最低求助积分说明 736093