Electrodes

Research and Practice of Colloidal Electrodes

Common cathode materials in lithium-ion batteries include LiCoO₂, LiMn₂O₄, LiFePO₄ and Li₃V₂ (PO₄), and common anode materials include graphite and silicon materials. The above electrode materials have their own advantages and disadvantages. For example, LiMn₂O₄ is cheap and safe, but Mn³⁺ has a distortion effect, resulting in serious capacity decay; graphite has good cycle performance, but high potential and low energy density. The battery electrodes prepared based on colloidal materials or colloidal technology can exhibit excellent electrochemical performance. Colloidal electrodes can greatly shorten the diffusion length of ion transport and can adapt to strain through cycling. Colloidal materials are emerging as ideal building blocks for creating and designing LIB electrodes with enhanced electrochemical performance. Their processability is a great advantage for the fabrication of complex devices and large-scale production methods.

Fig.1 Schematic of process for fabrication of additive-free battery electrodes for colloidal nanoparticles.^[1]

Fig.2 Colloidal supercapacitor electrode materials.^[2]

At Alfa Chemistry, we have successfully applied colloidal materials to battery electrodes and obtained excellent electrochemical performance. Our flexible portfolio of products and technologies can be deeply matched to your needs, providing complete solutions from material selection, manufacturing to performance testing. Alfa Chemistry can provide unparalleled colloidal electrode solutions and our experts are always ready to enter your project.

What Can We Do?

• Alfa Chemistry provides various colloidal materials for ion battery electrode research.
• Alfa Chemistry has advanced manufacturing technology, which can introduce colloidal materials into electrodes in various forms to improve the electrochemical performance of batteries.
• Alfa Chemistry can cooperate with upstream and downstream enterprises and scientific research units to develop colloidal electrodes.

References

1. Ha D H, et al. A General Method for High-Performance Li-Ion Battery Electrodes from Colloidal Nanoparticles without the Introduction of Binders or Conductive-Carbon Additives: The Cases of MnS, Cu2-xS, and Ge. ACS Applied Materials & Interfaces. 2015.
2. Chen K, D Xue. Colloidal supercapacitor electrode materials. Materials Research Bulletin, 2016, 83(nov.):201-206.

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