| 查看: 1247 | 回复: 4 | ||||
Parker一班木虫 (正式写手)
水牛生态学家
|
[交流]
大牛Chong-Min Wang最新高电压锂电力作（Chemistry of Materials，2015年10月29日） 已有3人参与
|
|
题目：Phosphorus Enrichment as a New Composition in the Solid Electrolyte Interphase of High-Voltage Cathodes and Its Effects on Battery Cycling 作者：Pengfei Yang†, Jianming Zheng‡, Saravanan Kuppan§, Qiuyan Li‡, Dongping Lv‡, Jie Xiao‡, Guoying Chen§, Ji-Guang Zhang*‡, Chong-Min Wang*† † Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States ‡ Energy and Environmental Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99352, United States § Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States 摘要：Immersion of a solid into liquid often leads to the modification of both the structure and chemistry of surface of the solid, which subsequently affects the chemical and physical properties of the system. For the case of the rechargeable lithium ion battery, consquence of such a surface modification is termed as solid electrolyte interphase (SEI) layer, which has been perceived to play a critical role in the stable operation of the batteries. However, the structure and chemical composition of the SEI layer and its spatial distribution and dependence on the battery operating conditions remain unclear. Using aberration-corrected scanning transmission electron microscopy, coupled with ultrahigh-sensitivity energy-dispersive X-ray spectroscopy, we probed the structure and chemistry of the SEI layer on several high-voltage cathodes. We show that layer-structured cathodes, when cycled at a high cut-off voltage, can form a Phosphorus-rich SEI layer on their surface, which is a direct evidence of Li-salt (LiPF6) decomposition. Our systematical investigations indicate that such a cathode/Li-salt side reaction shows strong dependence on the structure of the cathode materials, the operating voltage, and the temperature, indicating the feasibility of SEI engineering. These findings provide valuable insights on the interaction between the high-voltage cathode and the electrolyte, as well as the interface evolution upon battery cycling.  cm-2015-03510j_0008.gif |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : ChongminWang_ChemMater_2015.pdf
2015-10-29 05:02:29, 360.66 K
» 收录本帖的淘帖专辑推荐
 锂电资源共享 |
» 猜你喜欢
华南理工0703求调剂，总分336四六级已过
已经有2人回复
-
青岛大学化学化工学院2026年招收调剂硕士研究生
已经有0人回复
-
分析化学论文润色/翻译怎么收费?
已经有87人回复
-
新能源材料方向考研调剂招生（长江师范学院）
已经有0人回复
-
0854电子信息272求调剂！
已经有0人回复
-
化学-化工-材料-食品-生物-环境2026年研究生调剂（可以不考数学）
已经有0人回复
-
化学-化工-材料-食品-生物-环境-农业 2026年研究生调剂（可以不考数学）
已经有1人回复
-
070300一志愿211，312分求调剂院校
已经有4人回复
-
26年储能、电池方向博士申请
已经有0人回复
-
070300化学求调剂
已经有3人回复
-
青岛大学化学化工学院2026年招收调剂硕士研究生
已经有0人回复
2楼2015-10-31 11:14:40
Parker一班
木虫 (正式写手)
水牛生态学家
- 应助: 6 (幼儿园)
- 金币: 3641.7
- 散金: 27
- 红花: 57
- 帖子: 882
- 在线: 159.4小时
- 虫号: 2499414
- 注册: 2013-06-07
- 性别: MM
- 专业: 电化学
3楼2015-10-31 11:32:37
| ？ |
4楼2015-11-04 10:52:50
5楼2016-04-24 21:04:30
