Determination of transport and electrochemical kinetic parameters of M-H electrodes

被引：65

作者：

Popov, BN

Zheng, G

White, RE

机构：

[1] Department of Chemical Engineering, University of South Carolina, Columbia

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1996年 / 26卷 / 06期

关键词：

D O I：

10.1007/BF00253458

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical and transport properties of La0.65Ce0.35Ni3.55Co0.75Mn0.4Al0.3 electrode were investigated in alkaline solution. The exchange current density, polarization resistance and the symmetry factor were determined from polarization curves obtained at low overpotentials. The symmetry factor was estimated to be 0.55 +/- 0.01 and is independent of the state of charge. The equilibrium potential of the electrode was found to depend upon the hydrogen content in the alloy. The constant current discharge technique was used to determine the hydrogen diffusion coefficient in the alloy. The estimated value of (D) over bar/a(2) at 0.1 C discharge rate was 1.39 x 10(-4) s(-1).

引用

页码：603 / 611

页数：9

共 22 条

[1]

ADZIC GD, 1994, ELECTROCHEMICAL SOC, V94, P24

[2] ELECTROCHEMISTRY OF SULPHUR .1. OVERPOTENTIAL IN THE DISCHARGE OF THE SULPHIDE ION [J].

ALLEN, PL ;

HICKLING, A .

TRANSACTIONS OF THE FARADAY SOCIETY, 1957, 53 (12) :1626-1635

[3]

ANDERSEN AF, 1978, P INT S INT ASS HYDR

[4]

Austin L. G., 1964, ELECTROCHIM ACTA, V9, P1469, DOI [10.1016/0013-4686(64)85028-3, DOI 10.1016/0013-4686(64)85028-3]

[5] TAFEL SLOPES FOR FLOODED DIFFUSION ELECTRODES [J].

AUSTIN, LG .

TRANSACTIONS OF THE FARADAY SOCIETY, 1964, 60 (4997) :1319-&

[6]

Bard A. J., 1980, ELECTROCHEMICAL METH, P106

[7]

BITTNER HF, 1983, J ELECTROCHEM SOC, V130, pB193

[8]

Crank J, 1979, MATH DIFFUSION

[9]

KIRCHEIM R, 1988, P 1 INT S COMB HYDR

[10] ELECTROCHEMICAL IMPEDANCE AND DETERIORATION BEHAVIOR OF METAL HYDRIDE ELECTRODES [J].

KURIYAMA, N ;

SAKAI, T ;

MIYAMURA, H ;

UEHARA, I ;

ISHIKAWA, H ;

IWASAKI, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1993, 202 :183-197

← 1 2 3 →