| 查看: 2569 | 回复: 8 | ||||||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | ||||||
Parker一班木虫 (正式写手)
水牛生态学家
|
[交流]
锂电大牛Guozhong Cao最新钠离子电池力作（Chem Mater，2015年10月13日） 已有7人参与
|
|||||
|
题目：Elucidating the Role of Defects for Electrochemical Intercalation in Sodium Vanadium Oxide 作者：Evan Uchaker, Hongyun Jin, Pei Yi, and Guozhong Cao* Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, United States 摘要：Na1.25+xV3O8 (with x < 0, = 0, and > 0) was synthesized via a wet chemical route involving the reduction of V2O5 in oxalic acid and NaNO3 followed by calcination. It was possible to control the sodium composition in the final product by adjusting the amount of sodium precursor added during synthesis. It was revealed that deficient and excessive sodium contents, with respect to the ideal stoichiometry, are accommodated or compensated by the respective generation of oxygen vacancies and partial transition metal reduction, or cation disordering. When examined as NIB electrode material, the superior performance of the cation disordered material with excessive sodium was clearly demonstrated, with more than 50% higher storage capacity and superior rate capacity and cyclic stability. The formation of oxygen vacancies initially seemed promising but was coupled with stability issues and capacity fading upon further cycling. The disparity in electrochemical performance was attributed to variations in the electronic distribution as promoted through Na–ion interactions and the direct influence of such on the oxygen framework (sublattice); these factors were determined to have significant impact on the migration energy and diffusion barriers.  cm-2015-029355_0004.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 : GuozongCao_ChemMater_2015.pdf
2015-10-12 13:22:36, 542.23 K
» 收录本帖的淘帖专辑推荐
 锂电资源共享 | 纳米技术与能源及模拟 | 锂电 钠电 超电容 |
» 本帖已获得的红花（最新10朵）
qq394871254» 猜你喜欢
铁离子电池求助
已经有0人回复
-
想问为什么自制半电池循环只有50圈？
已经有0人回复
-
物理化学论文润色/翻译怎么收费?
已经有71人回复
-
硕士研究生全国统考 英语二真题合集
已经有0人回复
-
2027年申博自荐信
已经有0人回复
-
电催化、芬顿、臭氧三大高级氧化工艺工程优缺点横向对比
已经有0人回复
-
Journal of Alloys and Compounds投稿过程
已经有2人回复
-
澳大利亚皇家墨尔本理工大学（RMIT）理学院招收2027博士生
已经有62人回复
-
为什么现在电催化越来越卷？从“只看效果”到“全周期低成本”选型转变
已经有0人回复
-
电催化氧化反应器现场运维，不可忽视的安全风险与防控措施
已经有0人回复
qq394871254
金虫 (正式写手)
院士
- ECEPI: 1
- 应助: 137 (高中生)
- 金币: 464.9
- 散金: 816
- 红花: 28
- 帖子: 992
- 在线: 473.7小时
- 虫号: 1157563
- 注册: 2010-11-28
- 专业: 电化学
4楼2015-10-13 14:18:55
|
感谢分享 发自小木虫Android客户端 |
2楼2015-10-12 13:59:47
东神
木虫 (正式写手)
- 应助: 6 (幼儿园)
- 金币: 3397.4
- 散金: 496
- 红花: 6
- 帖子: 708
- 在线: 309.6小时
- 虫号: 848716
- 注册: 2009-09-15
- 性别: GG
- 专业: 无机材料化学
3楼2015-10-13 08:58:42
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
7楼2015-10-30 19:14:30