Document km5JyMMM82z9zXqDXBxjn8qrD

LABORATORY MEMORANDUM No. 41-S2 Subject: Solf Contained Battery Plates For: Sr. B.r. Hersen Date: Kerch 7, 1962 FROOmSS REPORT In October 1961 an fittest was made to prepara a self contained battery plate. A plate col; sad in the classical saarmar consisting of active mat erial oa a grid support, but a conductive plastic sheet containing active malarial. The sheet would have to be porous, and durable. To initially test the precise that this typo of plate could work, classic battery naterials were used. Positive ar.d negative plates vero prepared using roagcnt grade lead dioxide for the positive and atomized lead in tha negative. Mixtures of Kelcon, lead dioxide, sugar and graphite wore used for the positive plate, while load metal was substituted for the dioxide in the negative plate. I Bhon indorsed in electrolyte the cell had a potential of 2.0 volts across tho plates. Uccnuss of the Halted asount of active material avail** able in the two diaks tha capacity of the cell trao not very great. Sub sequent charging and discharging showed that tho coll operated in the stand ard tasaaar. Having seen that a coll could bo constructed in this manner tha next cell was prepared in a aero practical way. This tine coanercial ingredients were used. Ths positive plate was cade the load monoxide (Greoox) and tho negative plate with Grenos 21 negative expander (2321). A cell was prepared using two pressed disks as before, and tho cell was forced using a 6 volt battery charger. Tho cell forced in the usual Banner and at the end of form ation the voltage output of the call was 1.8 volts. Nl 000041451 N 27323 -2- \>, The following table shows the actual formulation used for this esperissat. A-S-22A Positive Hix Pbo (Grenox) 5.5 gas. Kalcon 2.0 gas. Graphite 1.0 gas. Sugar (Ground) 1.5 FB1S. Total 10.0 S3. by 55.0 20.0 10.0 1S.0 100*0 A-5-223 Kegative Y.lx PbO (vVronox) 0.33 38. negative Expacd^r(232A)0,l2 gas. h'rlcon 2.0 gas. Graphite 1.0 gas. Sugar (Ground) 1.5 -* Total 10,5 gas. 60.0 1.1 13.1 3.5 14.3 100.0 fisks 11/4" in dianater and weighing- 2 gwa. were pressed at 120t'C using 10 to&a of pressor* for 3 ainutes. The sugar is leached out in the formation acid creating a porous internal structure in the disk, The graphite makes the disk conductive, while Nalcoa foras the S'upportin-j matrix for the active eaterial. Cycling of th coll van soaovhat disappointing. The coll did not return to the proceeding voltage outputs bach tine it was cycled it showed lower and lower output voltages. It is folt that this nay have been duo to the lack of proper charging equipment. However this could also he due to improper femulation. There are ssany advantages to having a plato >ude in the Uoscriijcd Banner. 1)! Plato9 can be made such thinner than any cast grid plate. Since in automotive applications (high drain situations) the reaction in a battery is finest a surface reaction, this is a considerable advan tage., 2* Tlates can t prepared in sheet fora and out to any size or shape, 3) Antimony is elisin&ted froa the battery, along with its deleterious efforts, and 4) The plates are considerably store durable, being plastic rather than a brittle grid structure. Bith the limited tins and facilities to devote to this project it was impossible for us to fully exploit this development. However certain suggestions concerning future work became evident} as follows ab) Explore Explore the the effects of various leadings, possibility of producing these plates on a paper Baking nachice. c) feteraice if a laminate of sheet and separator could be produced. Thus each plate would be a completely self con- Nt 000041452 -3- It is felt that the described product could be very useful, esd pro* duotive for the company. The surface has iust been scratched concerning its development and application. It is the purpose of this report to trail attention to the idea sod describe the progress to date. J.P* Cestaro eej Ihr, J.A. Orsiao F. Fiaan S, Sund^ E.d* Puna dr. F. Spagnolo ( ML 000041453