Defect chemistry of interfacial storage

Chia-Chin Chen, Lijun Fu, Dominik Samuelis

An extra Li storage in M/Li2O and  M/LiF nanocomposites was observed, besides bulk  insertion and conversion reaction. Li ions are accommodated at the LiX side; electrons are stored at metal side; Neither of the composites’ constituents can store Li, but the composite synergistically can, therefore this is also called ‘Job-Sharing mechanism’ [1, 2].

When the particle size of the nanocomposites is small enough, the interfacial storage and bulk storage can be blurred, thus the interfacial storage provides a bridge between supercapacitor  and Li-ion battery (Scheme. 1).

A thermodynamic model for interfacial storage was developed, which describes both semi-infinite and mesoscopic  boundary conditions [3].

Scheme 1. Scheme of lithium interfacial storage. When the particle sizes of the nanocomposites are small enough, the bulk storage and interfacial storage is blurred.


  1. J. Jamnik and J. Maier, Phys. Chem. Chem. Phys., 2003, 5, 5215-5220. DOI: 10.1039/b309130a
  2. J. Maier, Faraday Discuss., 2007, 134, 51-66. DOI: 10.1039/b603559k
  3. J. Maier, Angew. Chem. Int. Ed., 2013, 52(19), 4998–5026. DOI: 10.1002/anie.201205569
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