Metal ion battery current collector

WIPO Patent Application WO/2017/073067

A1

A metal ion cell stack comprises a plurality of cell units, where each of the cell units comprises: a negative electrode comprising a layer of negative electrode active material disposed over an anode current collector, a positive electrode comprising a layer of positive electrode active material disposed over a cathode current collector, and a separator and electrolyte layer disposed between the negative electrode and the positive electrode. A first of the cell units comprises an electrode (2b) (for example an anode) with a thermal conductance higher than the thermal conductance of an electrode (2a) of the same polarity (in this example another anode) in a second of the cell units. In one example the high thermal conductance electrode (2b) may be an anode with a copper current collector while the lower thermal conductance electrode (2a) may be an anode with an aluminium current collector. This provides improved dissipation of heat from the interior of the cell stack compared to a cell stack having every anode current collector made of aluminium while avoiding the cost and additional weight that would be incurred if every anode current collector were made of copper.

SMITH KATHERINE LOUISE
KENDRICK EMMA
BARKER JEREMY
HEAP RICHARD

PCT/JP2016/004736

May 04, 2017

October 27, 2016

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SHARP KK (JP)
FARADION LTD (GB)

H01M4/66; C25B9/23; H01M10/052; H01M10/0585; H01M10/054; H01M10/0587

JP2012186034A	2012-09-27
JP2006216461A	2006-08-17
JP2015095329A	2015-05-18
US20140045032A1	2014-02-13
JP2005071784A	2005-03-17
US20070269714A1	2007-11-22

HARAKENZO WORLD PATENT & TRADEMARK (JP)

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