Morphology-control preparation and electrochemical performance of Mn-spinel cathode materials

尖晶石 形态学(生物学) 电化学 阴极 材料科学 化学工程 冶金 化学 地质学 电极 工程类 物理化学 古生物学
作者
Zhaoping Liu,Feng Xiao,SaiXiYaLeTu LEE,YongGao XIA,Huasheng Hu
出处
期刊:Kexue tongbao [Science China Press]
卷期号:58 (32): 3350-3356 被引量:5
标识
DOI:10.1360/972013-805
摘要

The disadvantage of the LiMn2O4 batteries is a capacity fade during charge-discharge cycling or high temperature storage. It is well known that this deterioration is mainly caused by Mn dissolution from spinel, especially at elevated temperature (60℃). Extensively studies have been made to explain its degraded cycling performance, but these studies mainly focused on investigating the structural change during lithium intercalation/de-intercalation process. In fact, the recent researches have shown that the surface structure and interface reaction of Mn-spinel greatly affect the Mn dissolution of spinel. In this study, we have successfully synthesized oxygen stoichiometric Mn-spinel cathode with spherical-like morphology. It has a much smaller (111) plane area compared with the single crystal octahedral or polyhedral Mn-spinel products. The decrease of the plane area could reduce the Mn dissolution during cycling process, which made it have better cycling performance than the commercial products. The electrochemical test results showed that 18650 cylinder batteries using this spherical-like Mn-spinel cathode material has an excellent cycle performance with the capacity retention of 80% after 2500 cycles at room temperature. Even at elevated temperature of 60℃, the capacity retention still reached 80% after 400 cycles.
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
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
1秒前
3秒前
Zhang完成签到,获得积分10
4秒前
5秒前
5秒前
6秒前
7秒前
圆锥香蕉给ZEcholy的求助进行了留言
8秒前
jisujun发布了新的文献求助10
8秒前
李小宁发布了新的文献求助10
8秒前
11秒前
Stroeve发布了新的文献求助10
12秒前
欧阳月空完成签到,获得积分10
12秒前
12秒前
星辰大海应助李小宁采纳,获得10
13秒前
段一帆发布了新的文献求助10
13秒前
冷艳的姿发布了新的文献求助10
13秒前
14秒前
FIN应助小小采纳,获得30
14秒前
领导范儿应助su采纳,获得10
15秒前
Candy发布了新的文献求助10
15秒前
Rondab应助xiaosu采纳,获得10
16秒前
CodeCraft应助LJJ采纳,获得10
17秒前
17秒前
SYLH应助科研通管家采纳,获得20
18秒前
所所应助科研通管家采纳,获得10
18秒前
科研通AI5应助科研通管家采纳,获得10
18秒前
张金蝶完成签到,获得积分10
18秒前
搜集达人应助科研通管家采纳,获得10
19秒前
CAOHOU应助科研通管家采纳,获得10
19秒前
丘比特应助科研通管家采纳,获得10
19秒前
CAOHOU应助科研通管家采纳,获得10
19秒前
赘婿应助科研通管家采纳,获得10
19秒前
量子星尘发布了新的文献求助30
19秒前
SYLH应助科研通管家采纳,获得20
19秒前
19秒前
19秒前
19秒前
CAOHOU应助科研通管家采纳,获得10
19秒前
Lyuhng+1完成签到 ,获得积分10
20秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989334
求助须知:如何正确求助?哪些是违规求助? 3531428
关于积分的说明 11253936
捐赠科研通 3270119
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809173