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Related Concept Videos

Electrolysis03:00

Electrolysis

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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Controlled-Current Coulometry: Overview01:27

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Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
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Voltaic/Galvanic Cells02:47

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Spontaneous Chemical Reactions
Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering our remote controls is one such example of a spontaneous redox reaction. Another example is the immersion of coiled copper wire into an aqueous silver nitrate solution. The reaction shows a gradual, visually impressive color change from colorless to bright blue and the formation of a grey precipitate on the copper wire. In this experiment,...
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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
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Electrifying Catalyst Production by Continuous-Flow Slurry Electrolysis.

Jingjing Xiong1, Guanwu Lian1, Kangshu Li2

  • 1Guangdong Basic Research Center of Excellence for Aggregate Science, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, Guangdong, China.

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|November 28, 2025
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Summary
This summary is machine-generated.

A new slurry electrolysis method enables scalable production of copper (Cu) nanocatalysts with controlled particle sizes. This approach significantly reduces greenhouse gas emissions and production costs for net-zero chemical industry goals.

Keywords:
catalyst preparationcontinuous-flow slurry electrolysiselectro-percolation networkpulsed overpotential depositionsingle atom catalysts

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • The chemical industry is transitioning to net-zero emissions through electrification.
  • Catalyst manufacturing, particularly for nanomaterials, faces challenges in scalability, size control, and powder handling, hindering electrification efforts.

Purpose of the Study:

  • To develop a scalable and efficient electrosynthesis strategy for copper (Cu) nanocatalysts.
  • To demonstrate precise control over nanocatalyst particle size, down to single atoms.
  • To assess the techno-economic feasibility and environmental impact of the proposed method.

Main Methods:

  • Slurry electrolysis in laboratory flow electrolyzers.
  • Pulsed electrochemistry to regulate nucleation and particle growth.
  • Techno-economic analysis of greenhouse gas emissions and production costs.

Main Results:

  • Achieved a productivity of 15 g/hour for Cu nanocatalysts with 2.5 wt % Cu loading.
  • Demonstrated excellent control over particle size, reaching single-atom dimensions.
  • Extended the strategy for synthesizing silver (Ag) and copper-silver (CuAg) catalysts.
  • Reported significantly low greenhouse gas emissions (0.03 kgGHG/kg) and production cost ($16.4/kg).

Conclusions:

  • The slurry electrolysis strategy effectively overcomes the productivity bottleneck in nanocatalyst electrosynthesis.
  • This method offers a scalable, cost-effective, and environmentally friendly route for producing tailored nanocatalysts.
  • The approach is adaptable for various metal catalysts, supporting the electrification of the chemical industry.