| 查看: 1978 | 回复: 5 | ||||
[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。 ![]() ![]() ![]() |
» 收录本帖的淘帖专辑推荐
电化学 |
» 猜你喜欢
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
电池测试中dQ/dV怎么理解
已经有1人回复
物理化学论文润色/翻译怎么收费?
已经有199人回复
精细化工浓水做零排放,前端到底该配什么氧化工艺?
已经有0人回复
大湾区大学姚瑶课题组2027届博士生招生 (与中山大学联合培养)
已经有27人回复
氯离子浓度对电催化处理效果的双重影响实测与参数优化
已经有0人回复
阴极协同电催化技术处理高盐难降解化工废水的机理与工程应用研究
已经有0人回复
氧化铝浆液
已经有2人回复
铁基改性石墨催化电极的制备、表征及电催化降解性能研究
已经有0人回复
N2O分解催化
已经有1人回复
石墨电极生产缺陷成因及工艺优化控制技术研究
已经有0人回复
» 本主题相关价值贴推荐,对您同样有帮助:
三电极体系和二电极体系的区别
已经有12人回复
283 电化学工作站,三电极位置怎么放,对测试结果有影响吗?
已经有11人回复
关于电化学超级电容器电化学测试时的电极问题
已经有7人回复
【求助】有机电解液用三电极如何测试
已经有9人回复
【求助】三电极系统的电化学阻抗,怎么拟合电路呢
已经有6人回复
【求助】循环伏安测试必须用三电极体系吗?不用对电极可以吗?
已经有16人回复
【求助】CHI660c电化学工作站的三电极与电极线怎么链接?
已经有21人回复
【讨论】电化学中三电极体系工作原理
已经有84人回复
电化学测试三电极体系咨询
已经有6人回复
2楼2010-12-27 19:25:19
3楼2010-12-28 09:39:20
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). ![]() |
4楼2010-12-28 10:49:23
5楼2010-12-28 20:21:04
6楼2013-04-24 16:43:30













回复此楼