Appeal 2007-0693
Application 10/188,519
1 7. Boer describes (in a working example) a battery cell, which
2 is cycled 3 and 25 times (i.e., rechargeable), comprising an
3 electrode A or B used to form lithium/LiCoO2 cells and an
4 electrolyte composed of 80% methyl formate (52 ppm
5 water), 20% dimethyl carbonate (697 ppm water), 2.0M
6 LiAsF6, and 0.4M LiBF4. (Col. 10:25 to col. 11:40.)
7 8. The electrode is said to be a composite electrode of
8 aluminum screen encapsulated in a matrix composition
9 formed of a mixture of high density, ultra-high weight
10 average molecular weight (5,000,000) polyethylene, high
11 density polyethylene having a weight average molecular
12 weight of 250,000, graphite, carbon black, and lithiated
13 cobalt oxide. (Col. 10:27 to col. 11:8.)
14 9. Boer teaches alternative polymers for the matrix
15 composition as follows (col. 5:6-18):
16 The polymer component of the sheet matrix
17 may be a polyolefin having a weight average
18 molecular weight of at least 75,000 and can be
19 selected from polyolefins having a weight average
20 molecular weight of from 75,000 to about
21 5,000,000. The polyolefin can be selected from
22 homopolymers, such as polyethylene or
23 polypropylene or from copolymers formed from a
24 mixture of hydrocarbon olefin group (-HC=CH-)
25 containing monomers, such as ethylene, propylene,
26 butene and the like, or from a mixture of at least
27 80 percent, preferably at least 90 percent by
28 weight of such hydrocarbon olefinic monomer
29 with other olefinic group containing monomer,
7
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