Batman (comic book) into Batman's pantheon, most notably those of Catwoman and Batman's eventual nemesis, the Joker. Alfred Pennyworth, the Wayne family butler, was introduced in issue #16 (April–May 1943). Editor Whitney Ellsworth assigned a "Batman" story to artist Dick Sprang in 1941. Anticipating that Bob Kane would be drafted to serve in World War II, DC inventoried Sprang's work to safeguard against delays. Sprang's first published Batman work was the Batman and Robin figures on the cover of "Batman" #18 (Aug.-Sept. 1943), reproduced from the art for page 13 of the later-published "Detective Comics" #84 (Feb. 1944). Sprang's first original published Batman
Butler–Volmer equation the surface is equal to that in the bulk. There are two limiting cases of the Butler–Volmer equation: where formula_21 and formula_22 are constants (for a given reaction and temperature) and are called the Tafel equation constants. The theoretical values of the Tafel equation constants are different for the cathodic and anodic processes. However, the Tafel slope formula_22 can be defined as: where formula_25 is the faradaic current, expressed as formula_26, being formula_27 and formula_28 the cathodic and anodic partial currents, respectively. Butler–Volmer equation The Butler–Volmer equation (named after John Alfred Valentine Butler and Max Volmer), also known as Erdey-Grúz–Volmer