 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 2 | 1/1 | 返回列表 |
| 查看: 534 | 回復(fù): 1 | |||
| 【懸賞金幣】回答本帖問題，作者她喵非喵將贈送您 5 個金幣 | |||
[求助]
請問如何用恒電流方法測定電化學(xué)活性表面積呢？ 已有1人參與
|
|||
|
請問如何用恒電流方法測定電化學(xué)活性表面積呢？ @Gamry-電化學(xué) 發(fā)自小木蟲手機(jī)客戶端 |
回復(fù)此樓» 猜你喜歡
中科院深圳先進(jìn)技術(shù)研究院成會明院士/唐永炳杰青團(tuán)隊擬招聘博士后若干名。
已經(jīng)有16人回復(fù)
-
考研調(diào)劑
已經(jīng)有1人回復(fù)
-
分析化學(xué)論文潤色/翻譯怎么收費?
已經(jīng)有102人回復(fù)
-
304求調(diào)劑
已經(jīng)有1人回復(fù)
-
大連工業(yè)大學(xué)杰青/長江團(tuán)隊招收儲能電池方向博士
已經(jīng)有17人回復(fù)
-
0856求調(diào)劑285
已經(jīng)有11人回復(fù)
-
硅碳半電池循環(huán)異常失效
已經(jīng)有1人回復(fù)
-
26年儲能、電池方向博士申請
已經(jīng)有1人回復(fù)
-
吉林大學(xué)物理化學(xué)專業(yè)招生考核制博士
已經(jīng)有20人回復(fù)
-
吉林大學(xué)物理化學(xué)專業(yè)招生2026級考核制博士
已經(jīng)有20人回復(fù)
-
一志愿湖南大學(xué)0703，356分，求調(diào)劑
已經(jīng)有1人回復(fù)
Gamry-電化學(xué) 
金蟲 (職業(yè)作家)
- ECEPI: 3
- 應(yīng)助: 651 (博士)
- 金幣: 993.1
- 散金: 1293
- 紅花: 1275
- 帖子: 3669
- 在線: 506.2小時
- 蟲號: 3437295
- 注冊: 2014-09-24
- 專業(yè): 電化學(xué)
【答案】應(yīng)助回帖
|
有人曾經(jīng)折磨操作過的。理論上可以去分析，假定雙電層，進(jìn)行不同方向極化電流，獲得電位，需要數(shù)據(jù)的認(rèn)真分析。 可以看一下下面這篇文獻(xiàn)，或許有幫助， Development of a galvanostatic analysis technique as an in-situ diagnostic tool for PEMFC single cells and stacks Kug-Seung Lee, Byung-Seok Lee, Sung Jong Yoo, Soo-Kil Kim, Seung Jun Hwang, Hyung-Juhn Kim, EunAe Cho, Dirk Henkensmeier, Jeong Woo Yun, Suk Woo Nam, Tae-Hoon Lim, Jong Hyun Jang, Development of a galvanostatic analysis technique as an in-situ diagnostic tool for PEMFC single cells and stacks, International Journal of Hydrogen Energy, Volume 37, Issue 7, 2012, Pages 5891-5900, ISSN 0360-3199, https://doi.org/10.1016/j.ijhydene.2011.12.152. (https://www.sciencedirect.com/sc ... /S0360319911028862) Abstract: A new galvanostatic analysis technique was developed for PEMFC single cells and stacks, while conventional potentiodynamic techniques, such as cyclic voltammetry for an electrochemical active surface area (EAS) and linear sweep voltammetry for a crossover current (iH2), cannot be directly utilized for stacks. Using a developed relationship for double-layer charging region, the iH2 and Cdl (double-layer capacitance) of a PEMFC single cell could be determined from the galvanostatic data under an atmosphere of nitrogen (cathodes) and hydrogen (anodes). Then, simply from the elapsed time in hydrogen adsorption/desorption region, EAS or roughness factors could be analyzed for a PEMFC single cell. For a 5-cell PEMFC stack, it was experimentally confirmed that the same analysis technique can be applied to analyze performance distribution in PEMFC stacks. As the characteristics of catalyst layers (EAS and Cdl) and polymer electrolyte membranes (iH2) of individual cells can be analyzed without stack disassembly, the developed galvanostatic technique is expected to be utilized for the degradation study and performance monitoring of practical PEMFC stacks. Keywords: Galvanostatic measurement; PEMFC stack diagnosis; Electrochemical active surface area; Pt catalyst; Hydrogen crossover current |
2樓2025-08-29 23:45:37
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 她喵非喵 的主題更新
| 2 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 312求調(diào)劑 +3 | 醋精華了一下發(fā)?/a> 2026-03-03 | 5/250 |
|
|---|---|---|---|---|
|
[考研]
 一志愿中南大學(xué)理學(xué)化學(xué)
+4
|
15779376950 2026-03-01 | 6/300 |
|
|
|
[考研] 291求調(diào)劑 +3 | 咕嚕咕嚕123123 2026-03-02 | 4/200 |
|
|
|
[考研] 0854總分272 +5 | 打小就是老實人 2026-03-02 | 6/300 |
|
|
|
[考研] 歡迎采礦、地質(zhì)、巖土、計算機(jī)、人工智能等專業(yè)的同學(xué)報考 +8 | pin8023 2026-02-28 | 11/550 |
|
|
|
[基金申請]
成果系統(tǒng)訪問量大，請15分鐘后再嘗試。由此給您造成的不便，敬請諒解。
+9
|
xhuama 2026-03-02 | 10/500 |
|
|
|
[考研] 291求調(diào)劑 +4 | Afy123456 2026-03-03 | 7/350 |
|
|
|
[考研] 298求調(diào)劑 +3 | 人間唯你是清歡 2026-03-03 | 4/200 |
|
|
|
[碩博家園] 2025屆雙非化工碩士畢業(yè)，申博 +4 | 更多的是 2026-02-27 | 5/250 |
|
|
|
[考研] 283求調(diào)劑 +9 | 鹿沫笙 2026-03-02 | 9/450 |
|
|
|
[考研] 291求調(diào)劑 +3 | MuoLuo1312 2026-03-02 | 6/300 |
|
|
|
[考研] 281電子信息求調(diào)劑 +3 | jhtfeybgj 2026-03-02 | 6/300 |
|
|
|
[考研] 288求調(diào)劑 +3 | 少71.8 2026-03-02 | 5/250 |
|
|
|
[考研] 化學(xué)，材料，環(huán)境類求調(diào)劑 +7 | 考研版棒棒 2026-03-02 | 7/350 |
|
|
|
[考博] 博士自薦 +4 | kkluvs 2026-02-28 | 5/250 |
|
|
|
[考研] 一志愿中石油（華東）本科齊魯工業(yè)大學(xué) +3 | 石能偉 2026-03-02 | 3/150 |
|
|
|
[考研] 265分求調(diào)劑不調(diào)專業(yè)和學(xué)校有行學(xué)上就 +6 | 禮堂丁真258 2026-02-28 | 9/450 |
|
|
|
[考研] 275求調(diào)劑 +3 | L-xin? 2026-03-01 | 6/300 |
|
|
|
[考研] 317一志愿華南理工電氣工程求調(diào)劑 +6 | Soliloquy_Q 2026-02-28 | 11/550 |
|
|
|
[考研] 307求調(diào)劑 +4 | 73372112 2026-02-28 | 6/300 |
|