应《网络安全法》要求，自2017年10月1日起，未进行实名认证将不得使用互联网跟帖服务。为保障您的帐号能够正常使用，请尽快对帐号进行手机号验证，感谢您的理解与支持！

24小时热门版块排行榜    

小木虫论坛-学术科研互动平台 » 化学化工区 » 电化学 » 电分析测试 » 【求助】电化学反应的三电极如何变成二电极体系测试固体
61/1返回列表
查看: 1650  |  回复: 5
只看楼主 @他人 存档 新回复提醒 (忽略) 收藏    在APP中查看

taoyulun

木虫 (正式写手)

[交流] 【求助】电化学反应的三电极如何变成二电极体系测试固体

电化学反应的是最常用电化工作站！
如何将这样的电化工作站变成二电极体系，用来测试固体样品伏安曲线。
回复此楼

» 收录本帖的淘帖专辑推荐

电化学

» 猜你喜欢

» 本主题相关价值贴推荐，对您同样有帮助:

» 抢金币啦！回帖就可以得到:

查看全部散金贴
1楼 2010-12-27 18:34:38
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jiazang

至尊木虫 (著名写手)
taoyulun(金币+1): 2010-12-28 09:02:17
taoyulun(金币+1): 2011-04-25 20:17:35
做成二电极体系
把CE和Ref接在一起
赞一下 回复此楼
2楼2010-12-27 19:25:19
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

taoyulun

木虫 (正式写手)

能测试固体样品！

谢谢，把CE和Ref接在一起，这样的电化工作站变成二电极体系，用来测试固体样品伏安曲线。
赞一下 回复此楼
3楼2010-12-28 09:39:20
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

taoyulun

木虫 (正式写手)

转载-二电极与三电极的之间的转化使用！但是来测试固体样品伏安曲线仍需解决？

applied potential is required, but this is not possible with a two electrode system, 工作电极总是独立的，对电极和参比电极可以根据具体的情况选择是用一个电极既做参比又做对电极而组成双电极测试系统，或者参比和对电极分开，形成三电极测试系统。



All electrochemical cells require at least two electrodes, since the potential of a given electrode can only be measured relative to another electrode, the potential of which must be constant (a reference electrode). In potentiometric measurements (such as measurement of pH), there is no current through the cell, and these two electrodes are sufficient (it should be noted that many pH and ion-selective electrodes used in potentiometric measurements are combination electrodes – both electrodes are contained within the same body). However, in a cyclic voltammetry experiment, an external potential is applied to the cell, and the current response is measured. Precise control of the external due to the potential drop across the cell due to the solution resistance (potential drop (E) = current (i) x solution resistance (R)) and polarization of the counter electrode that is required to complete the current measuring circuit. Better potential control is achieved using a potentiostat and a three electrode system, in which the potential of one electrode (the working electrode) is controlled relative to the reference electrode, and the current passes between the working electrode and the third electrode (the auxiliary electrode).
赞一下 回复此楼
4楼2010-12-28 10:49:23
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jiazang

至尊木虫 (著名写手)
taoyulun(金币+1): 2011-04-25 20:17:43
I would like to know what is the electrolyte, and what electrode (both working and CE) were adopted.
赞一下 回复此楼
5楼2010-12-28 20:21:04
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

acuto

新虫 (初入文坛)
谢谢拉
回复此楼
6楼2013-04-24 16:43:30
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 taoyulun 的主题更新
61/1返回列表
普通表情 龙 兔 虎 猫 高级回复 (可上传附件)
信息提示
关闭
请填处理意见
关闭