High energy density Li-ion battery electrode materials and cells

Patent metadata

Field	Value
Publication number	US-9705124-B2
Application number	US-201213588082-A
Country	US
Kind code	B2
Filing date	Aug 17, 2012
Priority date	Feb 27, 2012
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A method of preparing a high capacity nanocomposite cathode of FeF 3 in carbon pores may include preparing a nanoporous carbon precursor, employing electrochemistry or solution chemistry deposition to deposit Fe particles in the carbon pores, reacting nano Fe with liquid hydrofluoric acid to form nano FeF 3 in carbon, and milling to achieve a desired particle size.

First claim

That which is claimed:

1. A method of providing electrode materials for a battery cell, the method comprising:
(i) preparing a high capacity nanocomposite cathode, the high capacity nanocomposite cathode comprising nanoporous carbon comprising a plurality of nano-sized pores and nano-sized FeF 3 particles located within the nano-sized pores; wherein preparing the high capacity nanocomposite cathode comprises:
(a) providing the nanoporous carbon comprising the plurality of nano-sized pores;
(b) impregnating the nano-sized pores with a liquid iron nitrate nonahydrate precursor solution to deposit iron nitrate nonahydrate within the nano-sized pores;
(c) heating or evaporating the liquid iron nitrate nonahydrate precursor solution within the nano-sized pores of the nanoporous carbon in an inert environment to provide solid iron nitrate nonahydrate within the nano-sized pores;
(d) reacting the solid iron nitrate nonahydrate located within the nano-sized pores from step (c) with liquid hydrofluoric acid to yield hydrated iron fluoride located within the nano-sized pores; and
(e) heating the hydrated iron fluoride in argon to generate nano-sized FeF 3 particles within the nano-sized pores of the nanoporous carbon;

(ii) preparing a high capacity nanocomposite anode of copper and silicon by:
(a) electrolysis plating of copper on silicon nanopowder to produce Cu/Si nanopowder;
(b) annealing the Cu/Si nanopowder; and
(c) etching excess copper from a surface of the Cu/Si nanopowder; and

(iii) combining the high capacity nanocomposite cathode with the high capacity nanocomposite anode for a high energy density Lithium-ion battery cell.

2. The method of claim 1 , wherein the nanoporous carbon comprises a carbon aerogel.

Assignees

• Walker Jeremy D
• Maranchi Jeffrey P
• Russell Edward D
• Sample Jennifer L
• Patchan Marcia W
• Baird Lance M
• Srinivasan Rengaswamy
• Univ Johns Hopkins

Inventors

• Walker Jeremy D
• Maranchi Jeffrey P
• Russell Edward D
• Sample Jennifer L
• Patchan Marcia W
• Baird Lance M
• Srinivasan Rengaswamy

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/0402 Primary

  Methods of deposition of the material · CPC title

• H01M4/0452

  from solutions · CPC title

• H01M4/523

  for non-aqueous cells (H01M4/525 takes precedence) · CPC title

• H01M4/58

  of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates · CPC title