Electroless nickel current collector for 3D-microbatteries

T. Ripenbein, D. Golodnitsky*, M. Nathan, E. Peled

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


An electroless nickel process was used for the preparation of a thin-film current collector for concentric three-dimensional lithium and lithium-ion microbatteries. Ni-P coatings were deposited autocatalytically with the use of nickel sulfamate or nickel sulfate as a source of Ni2+ and sodium hypophosphite as a reducing agent. The synergistic effect of sodium acetate and citric acid was found to provide marked improvement in the pH stability of the sulfamate electrolyte. This enabled deposition of a conformal, fine-grained film on the high-aspect-ratio glass capillary and perforated-silicon substrates.

Original languageEnglish
Pages (from-to)435-444
Number of pages10
JournalJournal of Applied Electrochemistry
Issue number2
StatePublished - Feb 2010


  • 3D-microbattery
  • Electroless nickel
  • Silicon
  • Sulfamate electrolyte


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