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A n e x t e n s i v e s u r v e y of t h e D o c k t o r I n g e n i e u r D i s s e r t a t i o n e n of J a k o b J 6 r i s s e n a n d Klaus-R. M e n s c h i g , b o t h origina l ly f rom the Univers i t f i t D o r t m u n d , is p r e s e n t e d in r e g a r d to t he empi r i ca l m o d e l i n g of m e m b r a n e chlor -a lka l i cells a n d h o w it c a n b e a p p l i e d to a c o m b i n e d zero g a p / a t t a c h e d p o r o u s e l e c t r o d e l aye r m e m b r a n e cell. P a r t i c u l a r e m p h a s i s is p l a c e d on M e n s e h i g ' s w o r k on zero gap (ZG) a n d a t t a c h e d p o r o u s e l ec t rode layer (APEL) m e m b r a n e chlor -a lka l i cells, t h e first s u c h r e s e a r c h to a p p e a r in the o p e n l i te ra ture . M e n s c h i g d e v e l o p e d va r ious c o m p u t e r p r o g r a m s to cha rac t e r i ze t h e s e Z G a n d A P E L m e m b r a n e chlor-a lka l i cells. He cha rac t e r i zed t h e s e cells by u s i n g t he fo l lowing p a r a m e t e r s : t he c u r r e n t d e n s i t y d i s t r i b u t i o n over t h e m e m b r a n e , t he spec ies c o n c e n t r a t i o n s on t he m e m b r a n e sur faces , e q u i v a l e n t d i f fus ion layer t h i c k n e s s e s for t he m e s h e l e c t r o d e s / c u r r e n t co l lec tors a n d a t t a c h e d p o r o u s e l ec t rode layers, a n d t he e l ec t rode o v e r p o t e n t ia ls a n d e q u i l i b r i u m p o t e n t i a l s u s i n g the ~urface c o n c e n t r a t i o n s for t he Z G a n d A P E L cell conf igura t ions . He u s e d empi r ical e q u a t i o n s first p r e s e n t e d by J 6 r i s s e n for gap m e m b r a n e cells c o m b i n e d w i t h his o w n e x p e r i m e n t a l o b s e r v a t i o n s for a cell w h i c h u sed Na t ion TM 390, a b i l aye r pe r f luo rosu l fon ic acid m e m b r a n e , to d e t e r m i n e v a l u e s for t h e s e pa rame te r s . His emp i r i ca l r e la t ions de sc r ibe the d e p e n d e n c e of t he f lux of OH f rom ca tho ly te to ano ly t e as a f u n c t i o n of ca tho ly t e caus t ic c o n c e n t r a t i o n (Cc:NaO.) a n d t he m e m b r a n e po t en t i a l d rop as a f u n c t i o n of ca tho ly t e caus t i c (ec:N~,,,,) and ano ly te sal t concen t r a t i ons (Ca:N~,'~)B y u s i n g t he e x p e r i m e n t a l va lues for to ta l cell po tent ia l , c u r r e n t dens i ty , a n d cell ou t l e t c o n c e n t r a t i o n s w i t h t h e e m p i r i c a l e q u a t i o n s , M e n s c h i g c a l c u l a t e d v a l u e s for t he c h a r a c t e r i z i n g p a r a m e t e r s m e n t i o n e d above . He u s e d t h e s e va lues a n d o the r i n f o r m a t i o n (e.g., m e m b r a n e a n d p o r o u s e l ec t rode layer c o n d u c t i v i t y ) to p r ed i c t t he to ta l cell po tent ial for t h e Z G conf igura t ion . Wi th pr io r k n o w l e d g e of to ta l cell po t en t i a l a n d c u r r e n t e f f ic iency for c o r r e s p o n d i n g A P E L a n d Z G cell conf igura t ions , m e m b r a n e sur face c o n c e n t r a t i o n s were de r i ved a n d u sed in t he p r e d i c t i o n of to ta l cell po t en t ial for a c o m b i n e d zero gap / a t t a ched e l ec t rode cell.

Utility of an Empirical Method of Modeling Combined Zero Gap/Attached Electrode Membrane Chlor‐Alkali Cells