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Research

Research

Prof. Chi-Chang Hu's Electrochemistry and Advance Materials Lab at National Tsing Hua University focus on gaining deeper understanding in various research topics through electrochemical methods. We dedicated in rechargeable batteries/capacitors, electrodeposition technique, and system of electrochemical deionization. Via applying advance materials in diverse research fields, the performance of energy storage devices/water cleaning/eletrodeposition have been promoted.

智能手機電池

Battery & Capacitor

exploring all the possibility of materials for energy storage

銅耳機

Electroplating

study the roles of electrolyte and additives during electrodeposition and electropolishing

冷水瓶

ECDI

ECDI: A cleaner world. Transforming water purification and resource recovery.

battery

B​attery &
Capacitor

  • Aqueous based batteries

  1. Zinc protective layer for zinc-ion batteries

  2. Electrocatalysts for zinc-air batteries

  3. Zinc-iodine batteries

  • Non-aqueous based batteries

  1. Zero-excess lithium metal batteries (LMBs)

  2. Hard carbon negative electrode for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs)

  3. Calcium-based batteries (including calcium metal batteries and calcium-ion batteries)

  • Capacitors

  1. High-voltage supercapacitors

  2. Lithium-ion capacitors (LICs)

  3. Sodium-ion capacitors (SICs)

  4. Calcium-ion capacitors (CICs)

  • Advanced technologies

  1. In situ XRD

  2. In situ Raman

  3. TEM

  4. AFM

  5. Electrochemical analysis

Zinc protective layer for zinc-ion batteries

zinc protective layer

The existence of protective layer on zinc surface can inhibit the hydrogen formation along with boosting the dehydration process,  improving the morphology of zinc deposition.

Zero-excess lithium metal batteries

anode free lithium battery

The modified layer on the copper current collector promotes uniform lithium deposition, where LMB achieves 51.2% capacity retention over 100 cycles under high current density. 

Hard carbon electrode for LIBs

hard carbon electrode

Via adjusting the carbonization temperature, the ultramicropores (termed as "active closed pores") can be created, offering high total discharge capacity of 550 mAh/g with extra reversible capacity up to 230 mAh/g at low voltage region.

Calcium-based dual-ion batteries

For lab website.tif

The practically operable calcium-ion battery is composed by high-rate organic electrode for hosting calcium ions and graphite based material for the anion storage using the dual-ion storage concept, demonstrating high power performance and high energy density.

electroplating

Electroplating

  • During process, we focus on...

  1. Electrolytes

  2. Additives

  3. Convection conditions

  4. Current Density

  5. Environmental conditions 

  • Technologies we used...

    •  Materials analysis

      1. SEM​

      2. XRD

      3. TEM

      4. FIB

      5. EBSD

      6. Nanoindenter

    • Mechanism analysis​

      1. Electrochemical analysis​

      2. Insitu-stress analysis

  • Application​

  1. Battery 

Worker with Ladder
electroplating
Poster of nanotwin Cu.tiff
ECDI

Electrochemical Deionization

  • Purpose

  1. Water purification

  2. Valuable ions recycle

  3. Energy harnessing

  • Focusing

  1. Efficient electroactive materials development

  2. Ion-selective materials development

  3. Cell design

  4. System optimization

  5. Sea water desalination

  6. Specific ions removal

ECDI介紹
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