电解质液表面 dy=rtitutdIna+ +(D +trhd in a-+ Tu -rl.dIna R RH RTT+dIn- Na+(D +trhd In a a R R H H RT(D +TRHdInarh=rttd. d Ina电解质溶液表面 ( ) + + - - - + + + + - - + + - - 1 1 1 Na Na R R RH 1 1 1 R Na H RH 1 1 1 Na Na R R H RH H 1 1 1 R R RH RH RH [ ln ( ) ln ln ] [ ln ( ) ln ] ( ) ln ln d RT d a d a d a a RT d d a a a RT d a RT d a − =  +  +  +   +  −  =  +  +  =  +  = 