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Title: Nanodisperse transition metal electrodes (NTME) for electrochemical cells

Abstract

Disclosed are transition metal electrodes for electrochemical cells using gel-state and solid-state polymers. The electrodes are suitable for use in primary and secondary cells. The electrodes (either negative electrode or positive electrode) are characterized by uniform dispersion of the transition metal at the nanoscale in the polymer. The transition metal moiety is structurally amorphous, so no capacity fade should occur due to lattice expansion/contraction mechanisms. The small grain size, amorphous structure and homogeneous distribution provide improved charge/discharge cycling performance, and a higher initial discharge rate capability. The cells can be cycled at high current densities, limited only by the electrolyte conductivity. A method of making the electrodes (positive and negative), and their usage in electrochemical cells are disclosed.

Inventors:
 [1];  [2]
  1. Oakland, CA
  2. Sunnyvale, CA
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
873464
Patent Number(s):
US 6165641
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nanodisperse; transition; metal; electrodes; ntme; electrochemical; cells; disclosed; gel-state; solid-state; polymers; suitable; primary; secondary; negative; electrode; positive; characterized; uniform; dispersion; nanoscale; polymer; moiety; structurally; amorphous; capacity; fade; occur; due; lattice; expansion; contraction; mechanisms; grain; size; structure; homogeneous; distribution; provide; improved; charge; discharge; cycling; performance; initial; rate; capability; cycled; current; densities; limited; electrolyte; conductivity; method; usage; provide improved; current densities; metal electrode; positive electrode; electrochemical cells; negative electrode; electrochemical cell; transition metal; grain size; metal electrodes; secondary cell; rate capability; uniform dispersion; discharge rate; secondary cells; charge rate; discharge cycling; improved charge; provide improve; cycling performance; /429/423/

Citation Formats

Striebel, Kathryn A, and Wen, Shi-Jie. Nanodisperse transition metal electrodes (NTME) for electrochemical cells. United States: N. p., 2000. Web.
Striebel, Kathryn A, & Wen, Shi-Jie. Nanodisperse transition metal electrodes (NTME) for electrochemical cells. United States.
Striebel, Kathryn A, and Wen, Shi-Jie. Sat . "Nanodisperse transition metal electrodes (NTME) for electrochemical cells". United States. https://www.osti.gov/servlets/purl/873464.
@article{osti_873464,
title = {Nanodisperse transition metal electrodes (NTME) for electrochemical cells},
author = {Striebel, Kathryn A and Wen, Shi-Jie},
abstractNote = {Disclosed are transition metal electrodes for electrochemical cells using gel-state and solid-state polymers. The electrodes are suitable for use in primary and secondary cells. The electrodes (either negative electrode or positive electrode) are characterized by uniform dispersion of the transition metal at the nanoscale in the polymer. The transition metal moiety is structurally amorphous, so no capacity fade should occur due to lattice expansion/contraction mechanisms. The small grain size, amorphous structure and homogeneous distribution provide improved charge/discharge cycling performance, and a higher initial discharge rate capability. The cells can be cycled at high current densities, limited only by the electrolyte conductivity. A method of making the electrodes (positive and negative), and their usage in electrochemical cells are disclosed.},
doi = {},
url = {https://www.osti.gov/biblio/873464}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

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