24小时热门版块排行榜    

查看: 747  |  回复: 2

kxch123

新虫 (小有名气)

[求助] 锂离子电池正负极材料首次充放电损失的容量的去向 已有1人参与

扣电中若锂离子电池正极材料首次充放电效率是90%,那么其余充的10%的电量去哪了呢,正极材料结构的变化导致损失的电量占多少呢,副反应(如电解液的副反应消耗的电量)会占多少呢?
另外扣电中碳负极材料首次效率是90%,那么嵌入碳层间不再脱出的锂离子占多少呢,电解液与负极的副反应所消耗的电量占多少呢?
请各位大神帮忙解答,万分感谢。
回复此楼

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

kangxu

新虫 (小有名气)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
kxch123: 金币+10, ★★★很有帮助 2015-07-09 17:48:43
kxch123: 金币+10, ★★★很有帮助 2015-07-09 17:48:44
The situation is simple on anode: 10% is responsible for the irreversible reaction that consumes Li+, 90% is responsible for Li+ intercalation. Among the 10% irreversible, tiny amount is caused by Li+ stuck in graphite (such as defects or surface functionality reaction with Li etc), most were caused by reduction of solvents to form Li-salts, which is main ingredient of SEI.
On cathode it's more comlicated and depends on cathode material. In layer TM oxides the first cycle will experience some structural transformation (such as NCA NMC or LMR), and this process will produce excess amount of Li+ that cannot go back to cathode. Sometimes this irreversible cancels out the irreversible produced at anode side. The oxidation of eelctrolytes also happen, which does not directly consume Li+, but some of the products are solible and diffuse to anode to reduce. The net result of whether Li+ is consumed or produced deoends on many factors.
2楼2015-07-09 04:12:46
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

kxch123

新虫 (小有名气)

引用回帖:
2楼: Originally posted by kangxu at 2015-07-09 04:12:46
The situation is simple on anode: 10% is responsible for the irreversible reaction that consumes Li+, 90% is responsible for Li+ intercalation. Among the 10% irreversible, tiny amount is caused by Li ...

Thank you very much!

[ 发自小木虫客户端 ]
3楼2015-07-09 17:48:20
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 kxch123 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 303求调剂 +6 元夕元 2026-03-20 7/350 2026-03-25 12:00 by edmund7
[考研] 294求调剂材料与化工专硕 +17 陌の森林 2026-03-18 17/850 2026-03-25 11:26 by greychen00
[考研] 生物技术与工程 +3 1294608413 2026-03-25 3/150 2026-03-25 10:45 by hxsm
[考研] 299求调剂 +7 shxchem 2026-03-20 9/450 2026-03-25 10:41 by lbsjt
[考研] 材料调剂 +6 匹克i 2026-03-23 6/300 2026-03-24 21:09 by greychen00
[有机交流] 有机合成求助 20+3 FENGSHUJEI 2026-03-23 5/250 2026-03-24 19:31 by 88817753
[考研] 一志愿211 初试270分 求调剂 +5 谷雨上岸 2026-03-23 6/300 2026-03-24 16:32 by laoshidan
[考博] 申博26年 +4 八6八68 2026-03-19 4/200 2026-03-24 15:49 by 小Ben呵呵
[考研] 299求调剂 +7 某某某某位 2026-03-21 7/350 2026-03-24 15:24 by cuifj
[考研] 344求调剂 +3 desto 2026-03-24 3/150 2026-03-24 10:09 by 搏击518
[考研] 335求调剂 +4 yuyu宇 2026-03-23 5/250 2026-03-23 23:49 by Txy@872106
[考研] 263求调剂 +6 yqdszhdap- 2026-03-22 9/450 2026-03-23 12:57 by yqdszhdap-
[考研] 280分求调剂 一志愿085802 +4 PUMPT 2026-03-22 7/350 2026-03-22 22:13 by 星空星月
[考研] 求调剂 +4 要好好无聊 2026-03-21 4/200 2026-03-21 18:57 by 学员8dgXkO
[考研] 330求调剂 +4 小材化本科 2026-03-18 4/200 2026-03-20 23:13 by JourneyLucky
[考研] 一志愿 西北大学 ,070300化学学硕,总分287,双非一本,求调剂。 +4 晨昏线与星海 2026-03-19 4/200 2026-03-20 22:15 by JourneyLucky
[考研] 290求调剂 +7 ^O^乜 2026-03-19 7/350 2026-03-20 21:43 by JourneyLucky
[考研] 295材料求调剂,一志愿武汉理工085601专硕 +5 Charlieyq 2026-03-19 5/250 2026-03-20 20:35 by JourneyLucky
[考研] 招收调剂硕士 +4 lidianxing 2026-03-19 12/600 2026-03-20 12:25 by lidianxing
[考研] 一志愿福大288有机化学,求调剂 +3 小木虫200408204 2026-03-18 3/150 2026-03-19 13:31 by houyaoxu
信息提示
请填处理意见