Title:
Formation Method for Sodium Ion Cell or Battery
Document Type and Number:
WIPO Patent Application WO/2017/073066
Kind Code:
A1
Abstract:
A method of operating a rechargeable sodium ion cell, wherein the cell comprises an anode material which is a disordered carbon and a nickel-containing sodium oxide cathode material comprises: in a formation charge phase, charging the cell to a first voltage at which sodium is irreversibly liberated from the cathode material; and in a subsequent charge-discharge cycle, charging the cell to a second voltage lower than the first voltage.The voltage to which the cell is charged in the formation charge phase may be selected such that the amount of sodium irreversibly liberated from the cathode material in the formation charge phase substantially equals the amount of sodium deposited in a surface electrolyte layer on the anode in the formation charge phase.
Inventors:
KENDRICK EMMA
SMITH KATHERINE LOUISE
TREACHER JOSHUA CHARLES
SMITH KATHERINE LOUISE
TREACHER JOSHUA CHARLES
Application Number:
PCT/JP2016/004735
Publication Date:
May 04, 2017
Filing Date:
October 27, 2016
Export Citation:
Assignee:
SHARP KK (JP)
FARADION LTD (GB)
FARADION LTD (GB)
International Classes:
H01M10/054; H01M4/131; H01M4/133; H01M4/505; H01M4/525
Domestic Patent References:
| WO2014009722A1 | 2014-01-16 | |||
| WO2014156765A1 | 2014-10-02 |
Foreign References:
| JP2015060802A | 2015-03-30 | |||
| JP2011009202A | 2011-01-13 |
Other References:
See also references of EP 3369127A4
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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