24小时热门版块排行榜    

Znn3bq.jpeg
查看: 775  |  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
[基金申请] 河北省自然科学基金 +5 Peterchao 2026-05-18 7/350 2026-05-23 16:57 by articlefan
[基金申请] 揭秘青基评审内幕:几个A才能顺利中标 +3 国自然国社科中 2026-05-23 4/200 2026-05-23 15:37 by 2000zf36392
[论文投稿] 投MDPI的三个期刊都被桌拒 +4 木虫研究牲 2026-05-17 5/250 2026-05-23 14:44 by 期刊投稿求助
[考博] 26/27申博自荐 10+4 ZXW0202 2026-05-22 6/300 2026-05-23 14:32 by tfang
[基金申请] 青B发送上会通知了吗 +5 chemBioBro 2026-05-22 7/350 2026-05-23 12:35 by zhuifengzhy
[考博] 博士申请 +3 焦晓明 2026-05-21 3/150 2026-05-23 11:26 by mlc840311
[教师之家] 某211大学教师把个人教师官方主页改成:我跑了我跑了我跑了!官宣跑路! +3 zju2000 2026-05-21 4/200 2026-05-23 08:33 by xli1984
[基金申请] 今年审到国自然15份,谈谈感受 +27 国自然国社科中 2026-05-17 28/1400 2026-05-22 16:25 by hunter无悔
[论文投稿] 投稿求助,期刊 +4 希冀,有书读 2026-05-20 8/400 2026-05-22 10:16 by 希冀,有书读
[文学芳草园] 献血感触 +7 呀呀好傻 2026-05-19 13/650 2026-05-21 20:15 by 呀呀好傻
[基金申请] 面上本子正文33页,违规吗?会被低分嘛? +14 1234567wang 2026-05-17 16/800 2026-05-21 17:58 by 脆脆的饼干
[基金申请] 国自然评分 +4 无名者登山 2026-05-20 5/250 2026-05-21 16:35 by swuq
[基金申请] 国自然上会要求 +7 无名者登山 2026-05-18 11/550 2026-05-21 15:50 by draco1987
[基金申请] 提交了我也来说说感想 +9 fummck 2026-05-20 10/500 2026-05-21 14:17 by draco1987
[基金申请] 评审有感 +15 popular289 2026-05-18 26/1300 2026-05-21 10:35 by 西葫芦炒鸡蛋
[考博] 云南大学材料与能源学院解琳课题组钙钛矿博士招生 +4 光伏爱好者 2026-05-17 6/300 2026-05-21 01:37 by 17520222914
[有机交流] 反应很差,大量原料没有反应 5+3 Mr.Zot 2026-05-19 8/400 2026-05-20 22:19 by Equinoxhua
[考博] 如果工作了想读博,可以边工作边读全日制嘛? 30+3 铁达火车 2026-05-18 5/250 2026-05-20 09:33 by tfang
[考博] 博士申请 +5 星…… 2026-05-18 6/300 2026-05-18 23:49 by 糊糊涂涂好
[硕博家园] 我在等一个没有答案的答案 +3 Love_MH 2026-05-17 3/150 2026-05-18 02:22 by 竹林孤影
信息提示
请填处理意见