已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Studying the Effect of Ca Doping and Li3PO4 Coating on Ni-Rich LiNi0.91Co0.06Mn0.03O2 Ncm Cathode Material for Lithium Ion Batteries

材料科学 锂(药物) 尖晶石 电解质 阴极 离子键合 过渡金属 非阻塞I/O 离子 冶金 电极 化学 物理化学 内分泌学 催化作用 有机化学 医学 生物化学
作者
Tahir Sattar,Bong‐Soo Jin,Hyun‐Soo Kim
出处
期刊:Meeting abstracts 卷期号:MA2020-02 (2): 258-258
标识
DOI:10.1149/ma2020-022258mtgabs
摘要

Both environmental and energy concerns have shifted our dependence from fossil fuels to develop advanced renewable energy resources and energy storage devices for the portable electronic devices and electric vehicles [1]. Improvements in energy density, cost and safety are prime requirement for enabling the long range electrical vehicles [1]. Lithium ion batteries got huge attention due to their high discharge capacity and excellent capacity retention. Currently, Li[Ni x Co y Mn z ]O 2 (NCM) is a promising candidate which has shown great potential in hybrid vehicles and electric vehicles. NCM is consists on three transition metals; Ni provides high discharge capacity but suffers from thermal instability, Co offers better electronic conductivity but at high cost and Mn provides stabilizes the host structure and enhance cycling at the cost of low capacity. Ni-rich LiNi 1-x-y Co x Mn y O 2 (x + y ≤ 0.4 ) cathode materials have garnered a lot of attention for EV applications due to their higher discharge capacity and power density [2]. However, the major problem of Ni-rich NCM is their structural instability which leads to phase transition from layered to spinel to rock-salt structure. Another major issue is the cation mixing; unstable Ni 3+ reduce to Ni 2+ (0.69 Å) spontaneously, which migrates from transition metal slab (TM-slab) to Lithium slab (Li + ; 0.76 Å) due to similarity in their ionic sizes. The dissolution of transition metal ions in the electrolyte (LiPF 6 -based) is another critical problem [3]. To solve these problems, we exploit CaHPO 4 to provide enhance structural stability and protects the surface from side reaction with electrolyte as well. The precursor Ni 0.91 Co 0.06 Mn 0.03 (OH) 2 and LiOH were mixed in 1:1.05 ratio and pre-heated at 500 °C - 5 h followed by sintering at 740 °C - 15 h. The modified samples were prepared by mixing Ni 0.91 Co 0.06 Mn 0.03 (OH) 2 and LiOH (1:1.05) along with CaHPO 4 (0, 0.5, 1, 3 and 5 wt%). The samples were investigated with XRD and SEM. Later on, the electrodes were fabricated and their electrochemical properties were measured. XRD results confirm the Ca doping by shifting of (003) diffraction peak to the low angle and additional peaks were detected which belongs to the Li 3 PO 4 phase. SEM results show that the particles have sustained their spherical morphology which means that calcium is doped successfully. The 0.5 wt% sample resulted in improved electrochemical studies as compared to the rest. The enhanced properties are originated from optimized amount of doping and coating which results in stabilizing the host structure and protecting the surface. Ca 2+ enhanced the structural stability while Li 3 PO 4 acts as Li-reactive coating to suppress the reaction between the active material and electrolyte. The modified sample offers superior cyclability and enhanced electrochemical performance. References: [1] Ho-Hyun Sun, Arumugam Manthiram, Impact of Microcrack Generation and Surface Degradation on a Nickel-Rich Layered Li[Ni0.9Co0.05Mn0.05]O2 Cathode for Lithium-Ion Batteries, Chemistry of Materials, 29 (2017) 8486-8493. DOI: 10.1021/acs.chemmater.7b03268 [2] S.T. Myung, F. Maglia, K.J. Park, C.S. Yoon, P. Lamp, S.J. Kim, Y.K. Sun, Nickel-Rich Layered Cathode Materials for Automotive Lithium-Ion Batteries: Achievements and Perspectives, ACS Energy Lett. 2 (2017) 196–223. doi:10.1021/acsenergylett.6b00594 [3] J. Zheng, W.H. Kan, A. Manthiram, Role of Mn content on the electrochemical properties of Nickel-Rich layered LiNi 0.8-x Co 0.1 Mn 0.1+x O 2 (0.0≤x≤0.08) cathodes for lithium-ion batteries, ACS Appl. Mater. Interfaces. 7 (2015) 6926–6934. doi:10.1021/acsami.5b00788 [4] M.Q. Tao Chen, Feng Wang, Xiang Li, Xinxiu Yan, Hao Wang, Bangwei Deng, Zhengwei Xie, Dual functional MgHPO4 surface modifier used to repair deteriorated Ni-Rich LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode material, Appl. Surf. Sci. 465 (2019) 863–870. doi:10.1016/j.apsusc.2018.09.250

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

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
3秒前
6秒前
米米发布了新的文献求助10
8秒前
晚意意意意意完成签到 ,获得积分10
9秒前
16秒前
17秒前
18秒前
shinysparrow应助Hung采纳,获得200
19秒前
虚幻初之发布了新的文献求助10
19秒前
清逸完成签到 ,获得积分10
22秒前
張医铄完成签到,获得积分10
22秒前
Orange应助Vivian采纳,获得10
23秒前
turbohero发布了新的文献求助10
25秒前
潇洒绿蕊完成签到,获得积分10
27秒前
lulu完成签到 ,获得积分10
28秒前
maolao发布了新的文献求助10
29秒前
归海梦岚完成签到,获得积分0
30秒前
CodeCraft应助zzholiver采纳,获得10
30秒前
维尼完成签到,获得积分10
32秒前
清爽的傲易完成签到 ,获得积分10
36秒前
dong应助于某人采纳,获得10
38秒前
38秒前
菠萝完成签到 ,获得积分10
39秒前
muderder完成签到 ,获得积分20
40秒前
gggggg完成签到 ,获得积分10
42秒前
zzholiver发布了新的文献求助10
43秒前
43秒前
不爱吃西葫芦完成签到 ,获得积分10
46秒前
dy完成签到 ,获得积分10
48秒前
量子星尘发布了新的文献求助10
48秒前
缥缈的芷卉完成签到 ,获得积分10
51秒前
Yan完成签到,获得积分10
53秒前
Janice完成签到 ,获得积分10
54秒前
多肉葡萄完成签到 ,获得积分10
55秒前
有魅力的安蕾完成签到 ,获得积分10
59秒前
maolao完成签到,获得积分10
59秒前
旺仔小馒头完成签到 ,获得积分10
1分钟前
LUJyyyy完成签到,获得积分10
1分钟前
12完成签到,获得积分10
1分钟前
喵喵喵完成签到,获得积分20
1分钟前
高分求助中
The Mother of All Tableaux Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 2400
Ophthalmic Equipment Market by Devices(surgical: vitreorentinal,IOLs,OVDs,contact lens,RGP lens,backflush,diagnostic&monitoring:OCT,actorefractor,keratometer,tonometer,ophthalmoscpe,OVD), End User,Buying Criteria-Global Forecast to2029 2000
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Cognitive Neuroscience: The Biology of the Mind (Sixth Edition) 1000
Optimal Transport: A Comprehensive Introduction to Modeling, Analysis, Simulation, Applications 800
Official Methods of Analysis of AOAC INTERNATIONAL 600
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 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 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3959928
求助须知:如何正确求助?哪些是违规求助? 3506172
关于积分的说明 11128138
捐赠科研通 3238123
什么是DOI,文献DOI怎么找? 1789535
邀请新用户注册赠送积分活动 871803
科研通“疑难数据库(出版商)”最低求助积分说明 803024