Electroless nickel current collector for 3D-microbatteries

T. Ripenbein; D. Golodnitsky; M. Nathan; E. Peled

doi:10.1007/s10800-009-0014-0

Electroless nickel current collector for 3D-microbatteries

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	435-444
Number of pages	10
Journal	Journal of Applied Electrochemistry
Volume	40
Issue number	2
DOIs	https://doi.org/10.1007/s10800-009-0014-0
State	Published - Feb 2010

Keywords

3D-microbattery
Electroless nickel
Silicon
Sulfamate electrolyte

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10.1007/s10800-009-0014-0

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title = "Electroless nickel current collector for 3D-microbatteries",

abstract = "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.",

keywords = "3D-microbattery, Electroless nickel, Silicon, Sulfamate electrolyte",

author = "T. Ripenbein and D. Golodnitsky and M. Nathan and E. Peled",

note = "Funding Information: Acknowledgments We express our gratitude to RAMOT (University Authority for Applied Research and Industrial Development Ltd.) and to the European Community ({\textquoteleft}{\textquoteleft}Superlion{\textquoteright}{\textquoteright} project) for the partial support of this research.",

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doi = "10.1007/s10800-009-0014-0",

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AU - Ripenbein, T.

AU - Golodnitsky, D.

AU - Nathan, M.

AU - Peled, E.

N1 - Funding Information: Acknowledgments We express our gratitude to RAMOT (University Authority for Applied Research and Industrial Development Ltd.) and to the European Community (‘‘Superlion’’ project) for the partial support of this research.

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N2 - 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.

AB - 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.

KW - 3D-microbattery

KW - Electroless nickel

KW - Silicon

KW - Sulfamate electrolyte

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JO - Journal of Applied Electrochemistry

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Electroless nickel current collector for 3D-microbatteries

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