Enhanced Stability of Coated Carbon Electrode for Li‐O2 Batteries and Its Limitations

材料科学 电极 电解质 碳纤维 涂层 降级(电信) 化学工程 电化学 电池(电) 储能 纳米技术 复合材料 化学 电气工程 复合数 物理 工程类 量子力学 物理化学 功率(物理)
作者
Youngjoon Bae,Donghyun Ko,Sun‐Young Lee,Hee‐Dae Lim,Yun‐Jung Kim,Hyun‐Soo Shim,Hyeokjun Park,Youngmin Ko,Sung Kwan Park,Hyuk Jae Kwon,Hyunjin Kim,Hee‐Tak Kim,Yo‐Sep Min,Dongmin Im,Kisuk Kang
出处
期刊:Advanced Energy Materials [Wiley]
卷期号:8 (16) 被引量:64
标识
DOI:10.1002/aenm.201702661
摘要

Abstract Li‐O 2 batteries are promising next‐generation energy storage systems because of their exceptionally high energy density (≈3500 W h kg −1 ). However, to achieve stable operation, grand challenges remain to be resolved, such as preventing electrolyte decomposition and degradation of carbon, a commonly used air electrode in Li‐O 2 batteries. In this work, using in situ differential electrochemical mass spectrometry, it is demonstrated that the application of a ZnO coating on the carbon electrode can effectively suppress side reactions occurring in the Li‐O 2 battery. By probing the CO 2 evolution during charging of 13 C‐labeled air electrodes, the major sources of parasitic reactions are precisely identified, which further reveals that the ZnO coating retards the degradation of both the carbon electrode and electrolyte. The successful suppression of the degradation results in a higher oxygen efficiency, leading to enhanced stability for more than 100 cycles. Nevertheless, the degradation of the carbon electrode is not completely prevented by the coating, because the Li 2 O 2 discharge product gradually grows at the interface between the ZnO and carbon, which eventually results in detachment of the ZnO particles from the electrode and subsequent deterioration of the performance. This finding implies that surface protection of the carbon electrode is a viable option to enhance the stability of Li‐O 2 batteries; however, fundamental studies on the growth mechanism of the discharge product on the carbon surface are required along with more effective coating strategies.
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
星辰大海应助Giinjju采纳,获得10
1秒前
大个应助懂梦采纳,获得10
1秒前
bjyx完成签到,获得积分10
2秒前
linkman发布了新的文献求助30
2秒前
tsuipeng完成签到,获得积分10
3秒前
芋泥泥泥发布了新的文献求助10
3秒前
帕荣荣发布了新的文献求助10
3秒前
4秒前
蜂蜜罐头完成签到 ,获得积分10
4秒前
田様应助炙热怜寒采纳,获得30
5秒前
5秒前
小梦完成签到,获得积分10
6秒前
7秒前
武雨寒发布了新的文献求助10
8秒前
歪歪踢完成签到 ,获得积分10
8秒前
111发布了新的文献求助20
9秒前
声声慢发布了新的文献求助10
9秒前
炙热怜寒完成签到,获得积分10
10秒前
10秒前
Adzuki0812完成签到,获得积分10
10秒前
科目三应助澡雪采纳,获得10
11秒前
桐桐应助仁爱樱采纳,获得10
11秒前
不吃西瓜发布了新的文献求助10
11秒前
思源应助胖橘梨花逻辑猫采纳,获得10
12秒前
12秒前
李爱国应助啊啊啊啊采纳,获得10
12秒前
张海桐发布了新的文献求助10
13秒前
量子星尘发布了新的文献求助10
13秒前
科目三应助fc小肥杨采纳,获得10
14秒前
15秒前
li发布了新的文献求助50
16秒前
高高代萱发布了新的文献求助10
16秒前
风趣的老太应助15858833895采纳,获得10
16秒前
英俊的铭应助帕荣荣采纳,获得10
17秒前
17秒前
17秒前
汉堡包应助Yukangqian采纳,获得10
19秒前
心灵美从寒完成签到,获得积分10
19秒前
安澜发布了新的文献求助30
20秒前
20秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Effective Learning and Mental Wellbeing 400
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 3975871
求助须知:如何正确求助?哪些是违规求助? 3520207
关于积分的说明 11201502
捐赠科研通 3256611
什么是DOI,文献DOI怎么找? 1798403
邀请新用户注册赠送积分活动 877552
科研通“疑难数据库(出版商)”最低求助积分说明 806430