Other Storage Devices Supercapacitors and Photobatteries

Types of capacitors and mode of energy storage after Ref. Reprinted from B.E. Conway, Electrochemical supercapacitors. Scientific Fundamentals and Technological Applications, Kluwer Academic/Plenum Publishers, New York (1999). 

Copyright 1999 with permission from Kluwer Academic Pubhshers. 

Type Basis of charge or energy storage Examples 

Reprinted from R. Memming, Semiconductor Electrochemistry, Wiley-VCH Verlag GmbH, Weinheim (2001). 

Copyright 2001 with permission from Wiley-VCH Verlag GmbH. 

Instead of storing energy, photoelectrochemical cells can also be used for producing chemicals, such as photoelectrolyzers which split water into hydrogen and oxygen. If sufficiently efficient, such a device could be of key importance for a future hydrogen economy. 

In spite of its fascination, we have to leave this field and now turn to the second half of this contribution, describing electrochemical techniques which enable us to determine materials parameters. 

Electrochemical photovoltaic cell systems. Photovoltage (llph j, photocurrent (jph j, fill factor FF, efficiency (here rj) Reprinted from R. Memming, Semiconductor Electrochemistry, Wiley-VCH Verlag GmbH, Weinheim (2001). Copyright 2001 with permission from Wiley-VCH Verlag GmbH. 

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