Document 6beoEyw8eYaVxMZDjg43LG1V3

m-Wlji ijytifiw LIA22036 n nertiJTf t.wtot'tm LEAD INDUSTRiES ASSOCIATION 410 LKXtNOTOM AVENUS NCWVOM 17. I*. V. '> '' 3 coKmarruiL NOT FOR PCTBLICmOf Scptenber 21, 1950 SpaJECTt REPORT CF FgftTO AN.VJAL fufrii-U RKSfeASCH JL'iD To bothers of the Load Industries Association! Tha Fourth Annual Battery F>earch and Development Confereno* under the auspices cf the Power Sources Branch of the Signal Corps Engineering Laboratories, Fort Morcouth was held on Pay 23 and 2li, 1950 at the Berkeley-Carteret Hotel, A5bury Park, Hew Jersey. These Conferen ces art 1 cld annually to acquaint the battery industry with the progress of Signal Corps battery research and develop* nt prorrmi and to encourage cooperative interchange of inforeation on the art of battery manufacture. The following arc abstracts of technical report* or. storage batteries that coy be of specific interest to neeben of the Lead Indus tries Association. Very truly yours. Secretary. Vv W^'JUV MU w y w f s i,. i^ll. " >IiiMiJJUliW ^y p |< |||[B |f|pppi |jU ijjjj i 1 11)1HU up riii 'II | i im w eerw pp. J 11,1111, hip.h . jWiiW^BtaflUJ il*WPWgW*g*g . M^WPJHJiaUy'IM* J l iA?2037 ,/ KETEDROLOOIC1L BATTOTB Arthur F. Daedal Power Source* Branch Purpo*t The purpo** of this Investigation 1* to develop betterie* eetlng the peculiar power requlreaent# of meteorological equipment. Theae r*<julrenent* hare continuously changed during the last few years because of the need to obtain accurate Beteorologleel data 1b the upper etratoapbare regions. Departmental Torici The experimental writ ha* Included! 1. Devo lapsent ef a lead-add battery for meteorological uses* 2. Development of vacuus packlrg and vacuum filling techniques. 3. Investigation of nuaereua eloctrochealeal aystms *ich Bight be useful as power sources for eeteorologlcal batteries. Lt Development of water-activated Betearologlcal batteries. a. Hagneslum-ailver chloride battery. b. UagnesliB-cuprous chloride battery. Consent*! A small lead-acid storage battery was developed having satis factory performance characteristics for powering radlo-aeteorologleal equipment. Ihl* battery was about 2 in. x 6 In* z 1 In. in site and weighed approximately JOO grunt* Futurer future plans will Include! 1* Periodic review of electrochemical systems to determine If ary advancos hare been stale In the art which will Bake these systoe* better suited to meteorological application* than thoee presently being used. 2. Development of batteries using thes* new and premising clectrochnelcal syvtmse *^k im*M<WaMPIM*MWV!*wwiWWVsr* f ** : > \ TV? N lg09.0l I LIA22038 >> -J~---f-irlr-T mim xi-M* 1^L'-`'` J-' J "-'- 4 , \ J : i 7J 4 "? HOT ST0JUU3E BATTER! STSTD6 *r Dr. L L. Ctrriok University of Michigan Purpose! The purpose of this study is the development of s storage bsttery for solitary use osplcylng lead costed alusimai (rid with tbs ob jective of improving battery performance end conserving weight. Experimental Tfarlci Experimental work hss included! 1. Application of modem platirg techniques to provide an adherent impervious cost of lesd end to eliminate the danger of local action. 2. Investigation of grid design and thicknesses, oxide caterials and other battery components to achieve optinua performance under operating conditions. 3. Construction and testing of 12 7. batteries using theso lead plated aluminum grids. At the present time, 15 plates, .0li3" thick, have been used in the L5 A.R. battery and 29 such pistes in the 90 A. E. battery. These experimental batteries hava shown excellent performance at roaa temperatures and at extreme low temperatures when discharged at high rates. Ooapantai It was stated that a lead coated aluminum grid battery weighing 3Of less than conventional battery with oqual razsber of plates met oper ating requirements st - 707. Such s battery developed 300 aeptres for 1 minute but did not Meet volume requirements. Tho above battery was made up of 0.0033-0.003^ In. thick grids with a 0.0012-0.0011 lrualimlron coating. Usual battery pastes have proven unsatisfactory as reflected in erratic performance at low and high discharge rates. As s result it is planned to carry out studies with pastes of varying densities. Difficul ties have been experienced with positive paste composition in particular. Puturet future plans include a continuation of the above investigations to improve the performance of those batteries tyi e. Continuing work on paste densltlae. b. Using lesd platod aluminum posts and other parts. - 1 ' W!*W "JW-M1. iyg II' -tgu>f0P'n.es L MSgJ JB.'taUg' H)USmilW!"WJWJ N 1909.02 wp Sggpw-gBg vc* LIA22039 -^^^Prifftliii rtriM MifaakrfMsahaa* aiiftu ^a .w ^--. *-*-**> J* ____ toff m.'FEPATUR CHAJOIH3 Of LEAlKkCID BA1TERIB ty Eugene Willihngant Rational iattcry Company Purposet The purpose of this investigation is to develop a lead-acid battery which can bo charged at a low (-hOF) temperature. Present batteries, after a partial discharge require a week or more for recharge unless the battery i* first warmed up to a moderate tvpera^urs* Experimental Works ; low temperature charging has boon studied tgr several experi mental methods to establish the nature of the barriers to chargo aocepw tance. j In negative plates charge acceptance appears to be llsdted because the load sulfate, formed during discharge does not dissolve readily durInc the eubsoquent charge. Organic expanders ploy a con siderable part in this process but whan the axpanders are omitted, part of the barrier still res>aina to suke low Ucperetur* charging a very alow proocaa. s * In the positive plate, charge appears to be licitcd tgr the formation of a Iced ccrpound which has the properties expected of amor phous lead peroxide. The material builds up a chirge voltage so high that oxygen is evolved even at comparatively low charge rates. Ccraontst The foil'wing experimental data was presented on the effect ct addition agents nr. charge acoeptanoe. - ADDmof AOEjfT CHARGE ACCEPTANCE e- (Amporca) 1 R(Hl.sin?k, SOi 0.1L 0.13 . ~5;t ? 1 "Al'SSu Oj mroh Zn bflj, 03 j ; ; futuret Addition agents are being studied to find scmething *ileh may j giro lead eulfate particle* idilch are mere finely dlvldod than thoaa now being formed. the charge procoss for the negative plate vill be studied further to learn shethcr any othsr line of attack holds any premise. Ibo charge process of tic positive plsto will be studied to look for t possible mothod of Increasing charge acceptance. i JS.Ji WWW w >wi mimiey iw h w w VI '' : /. LI A2 2040 x\ ww / J 1 { . j # ~ ittti -i- SINTERED-P1ATE NICiCEUClIUIUU STORAOS BATTERIB by Dr. 1. Fleischer Kicktl-Cadnlua Battory Corporation Purposet Investigations luro been conducted on the lntered plate nickel-casfailm atorago better/ with tho da of developing an alkaline etorago battery for certain application* for dileh the load add battery 1* inadequate* Experimental Workt Investigations on tho sintered plate typo of nickel-cadnliaa storage battery, as roper tod at tho Third Annual Confcrcneo, have been continued* On tho baala of data available at the tin: of the last noctlrg, two batteries hare boon adoctod for evaluation ty sorvieo tests. These tvo batteries, a twin-cell nodcl adapted to the voXune of the lead-arid Batter/ '`-3* -A, and a flvo-coll nodal adapted to the volume of Battory &2-221/U, have been assembled in individual oeaented cases using taapcrit.u-w-r.sistant polystyrene sheet. The rdua.s of the ccncntod cases have bcn taken conservatively to allow for the necessary allowances in the design of a aoldod case for suitable well thickness, tolerance and draft. Coaoantsi The tm batteries with sintered plates, described above, wore reported to have passed the Signal Corps ' itration tost. The polystyrene plastic case was described in considerable detail* Tho following schematic diagraa of tbo oase was projected. future i Batteries will bo tested and evaluated and specification* established. amill rn> 1 m> If JJ"wa>T.V yw**,-,W'e w m.w c ih b w Nl 909.04 . :c~~> mum ,|',J'U>I 1 ^lyswgfPM.'J1.jWW^'JBi " u*220`'1 --1 DESKS FACTORS FOR SIHTEHED PLATE BATTERIES by Dr. Ernst 0. Bur* Power Source* Branch Purpose* The purpo of this paper la to outline fra* a theoretical point of view, and to oorrclate with experimental work already accom plished, the factor* governing the performance of the sintered plot* nickel-cadmium alkaline storage battery. Experimental Work! xscpcrleental work ha* been accomplished following these linest 1. Impregnation of sintered nickel plaque* of different thicknesses (0.65 to L.5 an) with nickel and CKfcelia aalt solutions, using different methods of impregna tion. 2. Single electrode atudies of the aforementioned plates during forming and cycling at various rates (20 hours to 1 minute discharge) and temperature* (/S0F to -hOF). 3. Testing of Oerman slntered-plate batteries, including acme preliminary experiments on charge acceptance at -hoop. Futuroi Future work will be concerned primarily with! 1. Completion of experimental work along previous lines to check the theoretical predictions. 2. Oscillograph and related studies of the polarisation of sintered plate* during charge aid discharge at differ ent temperatures. The results of these studies are ex pected to indicate further line* of attack towards the Improvement of battery perferaino*. J, Assembling of ecnplst* batterie*, usings with suitable aeparatoro, positive and negative slntored plate* de signed for optimum performance according to the preced ing single electrode atudia*. lu Testing of uch batteries to cheek performance during chsr?v, uiecharg* and storage as wall as during cycling aid life t-ete. awwpr *LU? WPULIJ N 1909.05 i.w i.w n'Mijaijyjiw.. 9gyjppjpMffljww u ih ^i I -f iwng*!|'i>iiJijw j i& my LIA22042 ->'V 'P*'S, MR ^w i "A 1 >WiyWwp'lWPp3W!JJW J'fl imj,'^ifiMi,iw. iw i, ii ii i N 1909.06