Battery cathode
A battery cathode comprises an electrode of silver, molybdenum, oxygen, fluorine and chlorine and having a higher discharge capacity expressed as milliampere hour per gram of material (mAh/g) available from silver reduction at a potential above 3V as compared to that of SVO material versus lithium. The battery cathode compound can be represented by Ag 6 Mo 2 O 7 F 3 Cl. The cathode is devoted for primary lithium batteries application and most notably can be used in a medical battery, such as a defibrillator battery [e.g. implantable cardioverter defibrillator (ICD) battery] having a lithium metal anode.
1. A battery cathode comprising a silver, molybdenum, oxygen, fluorine, and chlorine material having increased discharge capacity expressed as milliampere hour per gram of material (mAh/g) above 3V as compared to that of SVO material.
2. The cathode of claim 1 which is represented by Ag 6 Mo 2 O 7 F 3 Cl.
3. The cathode of claim 1 where said material exhibits increased capacity expressed as milliampere hour per gram of material at a potential of 3V as compared to that of silver vanadium oxide material.
4. The cathode of claim 1 wherein the cathode comprises a layer of said material on a conductive substrate.
5. A battery comprising a cathode of claim 1 , an anode, and an electrolyte.
6. The battery of claim 5 which is a medical defibrillator battery.
7. The battery of claim 5 having a lithium anode and having a maximum capacity of about 260 mAh/g above 2V and 133 mAh/g at a voltage of 3V.
8. A method of making a cathode, comprising forming a layer that comprises a material comprising silver, molybdenum oxygen, fluorine, and chlorine on an electrically conductive substrate.
9. The method of claim 8 wherein the layer comprises said material that exhibits increased capacity expressed as milliampere hour per gram of material at a potential of 3V as compared to that of silver vanadium oxide material.
10. The method of claim 8 wherein the layer further includes electrically conductive particles of carbon.
11. A method of making a battery, comprising assembling a cathode of claim 1 and an anode with an electrolyte therebetween.
12. The method of claim 11 having a lithium metal anode.