Electrochemistry

What I do

• Study electrochemical reactions and processes
• Design and analyze electrochemical cells
• Investigate electrode materials and interfaces
• Develop batteries, fuel cells, and supercapacitors
• Perform electrochemical analysis techniques
• Research corrosion and protection methods

When to use me

• When analyzing redox reactions
• When designing electrochemical cells
• When studying battery chemistry
• When investigating corrosion mechanisms
• When performing electrochemical measurements
• When developing energy storage systems

Key Concepts

Fundamental Equations

Nernst Equation

E = E° - (RT/nF) ln(Q)
E = E° - (0.0592/n) log(Q) at 298K

Butler-Volmer Equation

i = i₀ [exp(-αfη) - exp((1-α)fη)]

Electrochemical Techniques

# Example: Cyclic voltammetry analysis
def cyclic_voltammetry(potential_range, scan_rate):
    """
    Simulate cyclic voltammogram.
    potential_range: E_start to E_reverse
    scan_rate: dE/dt (V/s)
    """
    # Peak current (Randles-Sevcik)
    ip = 2.69e5 * n**1.5 * A * D**0.5 * C * v**0.5
    return {'peak_current': ip, 'formal_potential': E_f}

Battery Types

• Lead-acid: Reversible Pb/PbO₂ reactions
• Lithium-ion: Intercalation chemistry
• Nickel-metal hydride: H absorption
• Solid-state: Solid electrolytes

Corrosion

• Uniform corrosion
• Pitting corrosion
• Crevice corrosion
• Galvanic corrosion
• Stress corrosion cracking