Title:
REFERENCE ELECTRODE AND METHOD FOR PREPARING LITHIUM ION BATTERY HAVING REFERENCE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2019/096053
Kind Code:
A1
Abstract:
A reference electrode and a method for preparing a lithium ion battery having a reference electrode, the method comprising: welding a reference electrode substrate (7) to a lower portion of a current collector metal sheet (6) for which a tab adhesive (5) adheres to an upper portion thereof; causing metal lithium to melt to a liquid state; immersing the lower portion of the reference electrode substrate (7), to which the current collector metal sheet (6) is welded, into the liquid lithium such that the lower portion is coated with a layer of metal lithium; covering and coating a lower portion of the tab adhesive (5) with a layer of a separator to obtain a reference electrode (2) that is wrapped in the separator; inserting the reference electrode (2) between a separator (11) of a core of a lithium ion battery (1) and a negative electrode sheet so that an upper end of the reference electrode (2) is exposed from the core of the lithium ion battery (1); packaging in plastic the lithium ion battery (1) implanted with the reference electrode (2) to obtain the lithium ion battery (1) having the reference electrode (2). The reference electrode obtained by means of the method has a relatively long service life, has a simple manufacturing process, and meets industrial production requirements, enabling the industrial production and application of a lithium ion battery having a reference electrode to be possible.
Inventors:
CHU ZHENGYU (CN)
PU NAN (CN)
FENG XUNING (CN)
LU LANGUANG (CN)
LI JIANQIU (CN)
OUYANG MINGGAO (CN)
PU NAN (CN)
FENG XUNING (CN)
LU LANGUANG (CN)
LI JIANQIU (CN)
OUYANG MINGGAO (CN)
Application Number:
PCT/CN2018/114516
Publication Date:
May 23, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
H01M10/058; G01N27/30
Foreign References:
| CN207530063U | 2018-06-22 | |||
| CN108107092A | 2018-06-01 | |||
| CN106785068A | 2017-05-31 | |||
| US20120027926A1 | 2012-02-02 | |||
| CN201904414U | 2011-07-20 | |||
| CN203150666U | 2013-08-21 | |||
| JP2013191532A | 2013-09-26 | |||
| CN105308786A | 2016-02-03 | |||
| US20160308260A1 | 2016-10-20 |
Other References:
"Development of reliable lithium micro-reference electrodes for long-term in-situ studies of lithium-based battery systems", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004
"Self-Discharge of LiMn 0 lC Li-Ion Cells in Their Discharged State", J. ELECTROCHEM.SOC., vol. 145, no. 1, 1998
See also references of EP 3713005A4
"Self-Discharge of LiMn 0 lC Li-Ion Cells in Their Discharged State", J. ELECTROCHEM.SOC., vol. 145, no. 1, 1998
See also references of EP 3713005A4
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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