| 查看: 4660 | 回复: 29 | ||||||||||||||
nyfith铁杆木虫 (正式写手)
醉爱科学
|
[交流]
新型锂电池 充电速度比普通电池快120倍（附文献下载） 已有25人参与
|
 A group of Korean scientists, working at the Ulsan National Institute of Science and Technology (UNIST), have developed a fast-charge lithium-ion battery that can be recharged 30 to 120 times faster than conventional li-ion batteries. The team believes it can build a battery pack for electric vehicles that can be fully charged in less than a minute. One of the main issues with rechargeable batteries is that they take longer to recharge as their physical volume grows. When you recharge a battery, it charges from the outside in — so the fatter the battery, the longer it takes. You can somewhat avoid this by breaking larger batteries into smaller individual cells, but that technique only gets you so far. The Korean method takes the cathode material — standard lithium manganese oxide (LMO) in this case — and soaks it in a solution containing graphite. Then, by carbonizing the graphite-soaked LMO, the graphite turns into a dense network of conductive traces that run throughout the cathode. This new cathode is then packaged normally, with an electrolyte and graphite anode, to create the fast-charging li-ion battery. Other factors, such as the battery’s energy density and cycle life seem to remain unchanged. These networks of carbonized graphite effectively act like blood vessels, allowing every part of the battery to recharge at the same time — thus speeding up recharge by 30 to 120 times. Now, for all intents and purposes, this is a standard lithium-ion battery that could be used in smartphones and laptops — but the network of conductive traces does increase the overall size of the battery, so it’s probably better suited for use in electric vehicles (EVs). Obviously, an EV that can be recharged in under a minute is pretty crazy — though it still only brings them in-line with their gas-guzzling cousins. Being able to charge quickly is convenient, but it doesn’t get around the fact that li-ion battery packs are incredibly expensive — and the Korean carbonized LMO battery certainly won’t be cheap. I could see fast-charge batteries as being a nice option for smartphone and laptop users, though: You could have a normal battery and a fast-charge battery, and switch in whichever one makes most sense for your daily routine. Fast-charge batteries could be convenient in wireless mice and keyboards, and other gizmos, too. Finally, just thinking out loud: The battery in a Tesla Roadster stores 56 kWh of electric energy. To recharge that in under a minute would require an awful lot of power and some very thick cables, right? Read:We are slaves of electricity , and IBM’s light-weight, breathing lithium-air battery Research paper: DOI: 10.1002/anie.201203581 [paywalled][ 来自科研家族 锂电池世界 ] [ Last edited by nyfith on 2012-8-20 at 12:02 ] |
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 : 201203581_ftp.pdf
2012-08-20 11:17:04, 1.34 M
» 收录本帖的淘帖专辑推荐
 锂离子电池 | 先进材料 | 锂电材料、新能源与储能技术 | 扣式l锂离子电池 |
| 锂电材料研究技术 | 锂电 | 聚酯 | 化学 |
| 各种乱 | Next energy revolution | 资源 |
» 本帖已获得的红花（最新10朵）
xjzhou» 猜你喜欢
招收
已经有0人回复
-
西南某211招27届博士
已经有33人回复
-
物理化学论文润色/翻译怎么收费?
已经有66人回复
-
大连工业杰青/长江团队-生物质材料-储能电池方向招收2026级博士生
已经有0人回复
-
求调剂一志愿海大，0703化学学硕304分，有大创项目，四级已过
已经有10人回复
-
070300 求调剂
已经有1人回复
-
深圳大学高等研究院赵伟课题组招收化学调剂生
已经有3人回复
-
青岛大学固态电池研究团队招收材料、化学、物理等方向博士研究生
已经有29人回复
-
化学工程085602 305分求调剂
已经有17人回复
-
龋病与牙周病的表述
已经有1人回复
-
070300化学求调剂
已经有11人回复
» 本主题相关价值贴推荐，对您同样有帮助:
- 韩国科学家开发出一种充电电池新材料，它能在几分钟内就充满电
已经有14人回复
- 关于太阳能电池板给锂电池充电的问题
已经有5人回复
- 从电化学原理分析锂离子电池为什么要先充电后才能放电？
已经有68人回复
- 电池一直充电无法完成 原因？
已经有3人回复
- 锂电池恒压充电时间与电流设置
已经有9人回复
- 锂电池（铁锂、锰锂）低温零度以下充电
已经有22人回复
- 最新Nano Letters上有关石墨烯新型锂电池充电仅需一分钟的文章
已经有5人回复
- 请问解决锂电池快速充电的途径？
已经有11人回复
- 【其他】从新材料到空气电池，大型电池研究步入正轨（一）：正极材料
已经有49人回复
- 【讨论】商用锂离子电池充电速率问题
已经有19人回复
- 【讨论】锂电池低温充电
已经有14人回复
guohu21
木虫 (小有名气)
- 应助: 1 (幼儿园)
- 金币: 3363.1
- 散金: 307
- 红花: 1
- 帖子: 252
- 在线: 127.5小时
- 虫号: 1292270
- 注册: 2011-05-11
- 性别: GG
- 专业: 电化学
2楼2012-08-20 12:02:34
0.8
| 顶一下，感谢分享！ |
3楼2012-08-20 12:57:16
501258123
至尊木虫 (正式写手)
中级狗狗
- 应助: 59 (初中生)
- 金币: 14389.4
- 散金: 57
- 红花: 1
- 帖子: 487
- 在线: 393.3小时
- 虫号: 1061756
- 注册: 2010-07-21
- 专业: 电化学分析
4楼2012-08-20 15:21:40
501258123
至尊木虫 (正式写手)
中级狗狗
- 应助: 59 (初中生)
- 金币: 14389.4
- 散金: 57
- 红花: 1
- 帖子: 487
- 在线: 393.3小时
- 虫号: 1061756
- 注册: 2010-07-21
- 专业: 电化学分析
5楼2012-08-20 15:52:02
6楼2012-08-20 16:01:08
Brutallus
木虫 (正式写手)
智障
- 应助: 43 (小学生)
- 金币: 2422.4
- 红花: 2
- 帖子: 439
- 在线: 970.8小时
- 虫号: 999848
- 注册: 2010-04-18
- 性别: GG
- 专业: 电化学
7楼2012-08-20 16:56:53
 |
8楼2012-08-21 07:54:56
 |
9楼2012-08-21 10:02:52
 本帖仅楼主可见 |
10楼2012-08-21 10:58:21
