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庫倫滴定系統-CoulTell
Coulometric Titration System - CoulTCell

【Norecs】高溫電氣測量系統和週邊設備 庫倫滴定系統-CoulTell

庫倫滴定系統-CoulTell

簡介

Coulometric Titration System - CoulTCell

CoulTCell是一種電量滴定裝置,用於在高溫和不同氧氣分壓下測量材料的氧氣非化學計量特性。 這些實驗結果可用於研究非化學計量材料的氧化還原反應。
該系統由兩部分組成:樣品池和儀器包裝,可一起購買亦可分開購買。 樣品池是由黃銅和氧化鋁製成的,包括兩種8%mol的部分穩定的YSZ電解質,S型熱電偶,
Swaqelok閥和隔板以及8mm的水冷卻進出口。 擰下4個短螺栓即可拆下外管,從而輕鬆拿取樣品。 另外,配備了幾個備用坩埚。 在奧斯陸大學SveinStølen和
Truls Norby教授的指導下,Agil Bakken博士和 Mehdi Pichahang博士經過多年的研究開發和積累的經驗,對設備進行了改進設計。

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CoulTCell是一種電量滴定裝置,用於在高溫和不同氧氣分壓下測量材料的氧氣非化學計量特性。 這些實驗結果可用於研究非化學計量材料的氧化還原反應。

該系統由兩部分組成:樣品池和儀器包裝,可一起購買亦可分開購買。 樣品池是由黃銅和氧化鋁製成的,包括兩種8%mol的部分穩定的YSZ電解質,S型熱電偶,
Swaqelok閥和隔板以及8mm的水冷卻進出口。 擰下4個短螺栓即可拆下外管,從而輕鬆拿取樣品。 另外,配備了幾個備用坩埚。 在奧斯陸大學SveinStølen和
Truls Norby教授的指導下,Agil Bakken博士和 Mehdi Pichahang博士經過多年的研究開發和積累的經驗,對設備進行了改進設計。

儀器套件由精密電源和萬用表組成,並由計算機軟體控制。 儀器被封裝在包裹緊密的外箱中,通過USB電線通過BNC線材(包括線材)連接到電腦和樣品池。
該系統為開發和製造自己的電池以進行研究,特徵和測試無機材料(如燃料電池元件,膜的材料,化學環氧載體等)提供了一種經濟高效的選擇。 所有部分均經過
嚴格的測試和驗證要求。

樣品池簡介

將樣品放置在氧化鋁坩埚中,並通過鉑絲將其懸掛在樣品支架棒上,並深入爐內。 由墊圈和前法蘭接頭組成的密封系統放置在設備的頂部和爐子上方。 
水冷卻系統使接頭和密封元件受到保護。 通過向爐子電源提供反饋,植入裝置中的S型熱電偶可控制樣品和固體電解質的實際溫度。 氣體入口和出口(Swagelok bulkheads)可用於用所需氣體(例如空氣,O2或N2)沖洗整個裝置。 

Oxygen pump固體電解質從裝置中吸出氧氣,因此從樣品中吸出氧氣,而Oxygen sensor固體電解質則同時監視氧氣分壓的變化。
儀器包裝和軟體提供並測量固體電解質的電壓和電流。 電子控制器和用戶之間的介面可通過軟體應用,該軟體以圖形方式顯示系統狀態並每5秒記錄一次結果。 
可以在一種或兩種固體電解質中加入所需的氣體,從而有機會調節化學洩漏。

測量儀器
該設備包括將多通道電壓錶和精密儀器到一個完整儀器箱中

輕鬆連接
BNC電線將儀器連接到樣品池,USB線將儀器連接到電腦

量身訂製的軟體
該軟體在具有USB埠和Windows作業系統的任何電腦上執行

通過可拆卸的外管輕鬆置入產品
在此照片上:樣品持沖洗閥,水冷卻迴路,O行圈密封,4 個螺紋螺槽。

 

樣品池規格

  • 外管直徑:30mm。
  • 全長:<700mm。
  • 腔室長:300mm。
  • 水冷盤管。
  • 氣體進口和出口Swagelok隔板。
  • 每個固體電解質的獨立氣室。
  • 樣品:約1.2g。
  • 固體電解質:8%mol部分穩定的YSZ。
  • 溫度:850ºC-1100ºC。
  • 大氣:氧氣和氮氣的混合物(從純氧氣到純氮氣)。
  • 氧氣分壓範圍:從log(pO2)= 0到log(pO2)= -18(在950ºC時)。
  • 900ºC時的漏電流:log(pO2)= - 1.5時為15μA。
  • 900ºC時的電極+電解質電阻:5Ω。

儀器包規格

  • 儀器 Keithley 2000 DMM (含掃描卡)、Keithley 2401 SMU。
  • 電源精度 10pA。
  • 即插即用軟體與儀器。
  • 可調整 PI 控制。
  • 即時螢幕圖形 泵電流、感測器電壓、爐溫、泵電壓。
  • CSV 資料匯出。

其他所需設備

  • 水冷卻系統

內徑5mm的矽膠軟管,供水可靠。 建議使用帶泵的再循環系統和溢流系統。

  • 爐子

立式管式爐的管徑約為40mm,長度為500mm至700mm。 報價中僅包含根據要求提供的合適的爐子。

  • 電腦

Windows操作系統,一個USB埠

 

The CoulTCell is a coulometric titration setup for measurements of oxygen nonstoichiometric properties of materials at high temperatures, and in different partial pressure of oxygen. The output of these experiments can be used for the investigation of the redox behavior of nonstoichiometric materials.

The system consist of two parts; the cell and the instruments package, to be aquired together or separately. The cell is brass and alumina made, two 8% mol partially stabilized YSZ electrolytes, S-type thermocouple, Swagelok valves and bulkheads and 8mm water cooling- in and outlets. Accessing sample is easy by detaching the outer tube by unscrewing 4 short bolts. Equipped with several spare crucibles. The design is improved version of equipment resulting from years of research development and experience by research fellows Dr. Egil Bakken and Mehdi Pishahang under supervision of professors Svein Stølen and Truls Norby at the University of Oslo.

The instruments package consist of precission power source and a multimeter, controlled by a computer software. The instruments are enclosed in a compact casing, connecting to the computer wuth USB cable and to the cell with BNC cables (cables included).

The system offers a cost-effective alternative to developing and building your own cell for studies, characterization and testing of inorganic materials for purposes like fuel cell components, membrane materials, chemical-looping oxygen carriers, etc. All units are tested and validated with strict requirements.

Brief description of the cell

The sample is placed in an alumina crucible, hanging from the sample holder rods by platinum wires, deep inside the furnace. The sealing system consisting of a gasket and front flange couplings are placed on the top of the setup and above the furnace. Water cooling system keeps the joints and sealing components protected. By giving feedback to the furnace power supply, the S-type thermocouple implanted into the setup controls the actual temperature of the sample and the solid electrolytes. The gas inlet and outlet (Swagelok bulkheads) can be used to flush the entire setup with the desired gases (e.g. air, O2, or N2). Oxygen pump solid electrolyte sucks oxygen from the setup, and therefore the sample, while oxygen sensor solid electrolyte monitors the changes of the oxygen partial pressure simultaneously. The instrument package and software supply and measure the voltage and current of the solid electrolytes. The interface between the electronic controllers and the user is applicable by the software which shows the state of the system graphically and logs the output every 5 seconds. Desired gases can be fed in one or both of the solid electrolytes, providing the chance to adjust the chemical leakage.

Measurement instrumentation

The setup includes both multichannel voltmeter and precision sourcemeter integrated into a nice instrument casing.

Easy connections

BNC cables connect the instrument to the cell and USB cable instrument to computer.

Tailor made software

The software will run on any computer with USB port and Windows operating system.

Easy sample access by detachable outer tube

On this picture: Cell flush out valve, water cooling loop, O-ring seal, 4 threaded screw slots.

Cell specifications

  • Outer tube diameter: 30mm
  • Overall length: <700mm
  • Chamber length: 300mm
  • Water cooling coil
  • Gas inlet and outlet Swagelok bulkheads
  • Separate gas chambers for each solid electrolyte
  • Sample: ≈1.2 gr
  • Solid electrolytes: 8% mol partially stabilized YSZ
  • Temperature: 850 ºC - 1100 ºC
  • Atmosphere: Mixtures of oxygen and nitrogen (From pure O2 to pure N2)
  • Oxygen partial pressure range: from log(pO2)=0 to log(pO2)= -18 (at 950 ºC)
  • Leakage current at 900 ºC: 15 μA at log(pO2)= -1.5
  • Electrode+Electrolyte resistance at 900 ºC: 5Ω

Instrument package specifications

  • Instruments Keithley 2000 DMM with scan card, Keithley 2401 SMU
  • Sourcing precision 10pA
  • Plug and play software & instrument
  • Adjustable PI control
  • Real time on screen plots: Pump current, Sensor voltage, Furnace temperature, Pump voltage.
  • CSV data exports

Additional equipment required

  • Water coolling system

5mm inner diameter Silicon hose with reliable water supply. Recirculating system with a pump and overflow system recommended. Included in the quote only by request.

  • Furnace

Vertical tube furnace with tube diameter about 40mm, length of 500mm to 700mm. Suitable furnace included in the quote only by request.

  • Computer

Windows operating system, 1 free usb port.