... После разбора можно будет увидеть свои работы и задать вопросы проверяющим. ... Средний балл 3.6 из 10 возможных . Максимальный балл 6.25 из 10 возможных . ... Все контрольные работы оцениваются по 10-балльной шкале. ... Зачтенной считается работа, оцененная в 3 балла или выше. ... Претендентами на "автомат" становятся все, кто набрал не менее 5 баллов за каждую из контрольных работ. ... С пожеланиями новых знаний и успехов на контрольных, сотрудники и аспиранты кафедры электрохимии . ...
... A + B O R e - 10.1 O R A + B e - H3O+ + e H H + H2O ( ) 2H H2 ( ) + H3O+ + e H2 + H2O ( ) O2 2O O O O2 + 2H+ + 2e H2O 2 O2 + e O 2 + 2H+ + 2e H2O + H2O + 2e 2OH H2O2 + 2H+ + 2e 2H2O O2 + H2O + 2e OH + HO HO2 + H2O + 2e 3OH 2 O2 + H3O+ HO2 + H2O HO2 + e HO2 HO2 + H3O+ H2O2 + H2O p v = v - v = k R - k p R 10.1 i = nFv0 i0 p R - 1 R = RT i ln 1 + pnF i0 RT n F 2 R 2 max = Rs = RT n 2 F 2 R 2 +2 = v0 p R Electrochimica Acta 20 (1975) 913-916 1 RT =22 Cs n F R 2 + 2 . ...
... 1959 . 1 : = v 8.1-8.2 k 1 vk = = : ck (t , x, y, z ) j () k =j () k +j ( ) k ) +j ( ) k ck =- div jk( t i =± nFj () k i( E ) I 8.2 j =- Dk grad ck II c i =± nFDk k x d 2ck =0 dx 2 x =0 ck 2ck = Dk 2 0= t x 0 dck ck - cks = const = dx k 0 s cO - cO i = nFDO O 0 cR - c i =- nFDR R 0 s R 0 cO = nFDO O ( idO ) - c= bO ( id R ) - s cR = bR s O i i (O ) d (R) d c =- nFDR 0 R R nFDO O i 1959) · (, .. ... Electrochemistry Communications 2 (2000) 353358 E. Ahlberg et al. ...
... Lectures, Questions & Answers . ... Moscow U) . ... I Solid St Chem Mechanochem) . ... Evgeny V. Antipov (Faculty of Chemistry, Moscow State University) New cathode materials for lithium batteries . ... Vladimir I. Feldman (Faculty of Chemistry, Moscow State University) Physics and chemistry of solvated electron . ... Galina A. Tsirlina (Faculty of Chemistry, Moscow State University) Diversity of electrochemistry: the specific problems of molecular models and their experimental verification . ...
Daniil Itkis (Moscow U) Q: What about thermal stability of Li-air batteries? ... If we exclude the issues connected with thermal stability of battery packaging materials from our consideration there still will be2 limitations: lithium melting temperature (about 180oC) and rapid electrolyte evaporation at elevated temperature. ... Q: Is it possible to use Li-air batteries at -40 C? The major problem at -40oC is low Li+ conductivity of electrolytes. ...
Evgeny Antipov (Moscow U) Q: What structural type is more preferable for practical applications? It depends on the type of application. For portable applications -NaFeO2 (derived from the rock-salt type) is preferable because this layered structure provides relatively high specific energy and fast Li-ion diffusion in solid-state and, respectively, high specific power. ... However, specific energy is close to that one for LiFePO4 because of the lower capacity (146 mAh g-1). ...
... e0 N A 0 RT kT v= i = i0 = Di0 = 2 6r 6ri | ... e N A 2 N A i10 = = 6 6 0 kT c =| zi | ... b c - i0 X X X (2 - 2 )e (2 - 2 )e 2 N A i10 = = X 24 0 kT 24 0 kT 0 kT 2 0 3 0 3 1/ 2 c =b p c (. ) -- = 0 - (2b + bp 0 ) c 0.001 (1903-1976) 0 - = - bp 0 0 c c - 2b 1 + aB c + 2b c = + b c 1 - b c - = 0 - (2b + bp 0 ) c 1 + aB c 0.1 X = 20-40 / ui X > 1 0 - > 2 5.5 CaCl2 SrCl2 BaCl2 S. M. Gadzhiev, O. M. Shabanov, A. O.Magomedova, S. A. Dzhamalova, Russian Journal of Electrochemistry, 39(2003) 10831088. ...