Corrosion degradation of powder composite hydride electrodes in conditions of long-lasting cycling

被引：21

作者：

Bala, Henryk ^{[1
]}

Dymek, Martyna ^{[1
]}

机构：

[1] Czestochowa Tech Univ, Dept Chem, PL-42200 Czestochowa, Poland

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2015年 / 167卷

关键词：

Intermetallic compounds; Coatings; Electrochemical properties; Corrosion; ELECTROCHEMICAL PROPERTIES; HYDROGEN ABSORPTION; CAPACITY FADE; COBALT; MANGANESE; PULVERIZATION; BATTERIES; ALUMINUM; KINETICS; NICKEL;

D O I：

10.1016/j.matchemphys.2015.10.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The LaNi4.5Co0.5 hydrogen storage material degradation process in 6 M KOH solution fulfills first-order chemical reaction kinetic law. After ca 10 first cycles, up to N = 45 cycle, the logarithm of discharge capacity linearly decreases with cycle number. The slope of logQ(disch) = f(N) straight lines is a measure of degradation rate constant (k(degr)). Corrosion rate of the tested material is directly proportional to k(degr). The LaNi4.5Co0.5 powder encapsulation with electroless Ni-P is prone to evident increase of the hydride electrode corrosion resistance. Additionally, encapsulation improves the charge/discharge kinetics: the exchange currents of H2O/H-2 system are 20% greater for the chemically treated powder. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：265 / 270

页数：6

共 36 条

[1] CERIUM CONTENT AND CYCLE LIFE OF MULTICOMPONENT AB(5) HYDRIDE ELECTRODES [J].

ADZIC, GD ;

JOHNSON, JR ;

REILLY, JJ ;

MCBREEN, J ;

MUKERJEE, S ;

KUMAR, MPS ;

ZHANG, W ;

SRINIVASAN, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (10) :3429-3433

[2] Effect of cobalt on the physicochemical properties of a simple LaB5 metal hydride alloy [J].

Ambrosio, RC ;

Ticianelli, EA .

JOURNAL OF POWER SOURCES, 2002, 110 (01) :73-79

[3]

Atkins P., 2006, Atkins physical chemistry

[4] THE CORROSION OF IRON IN SULFATE-SOLUTIONS AT PH=0-2 [J].

BALA, H .

ELECTROCHIMICA ACTA, 1984, 29 (01) :119-129

[5] Development of metal hydride material efficient surface in conditions of galvanostatic charge/discharge cycling [J].

Bala, Henryk ;

Dymek, Martyna ;

Drulis, Henryk .

MATERIALS CHEMISTRY AND PHYSICS, 2014, 148 (03) :1008-1012

[6] Hydrogen diffusivity, kinetics of H2O/H2 charge transfer and corrosion properties of LaNi5-powder, composite electrodes in 6 M KOH solution [J].

Bala, Henryk ;

Dymek, Martyna ;

Adamczyk, Lidia ;

Giza, Krystyna ;

Drulis, Henryk .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2014, 18 (11) :3039-3048

[7] Evaluation of electrochemical hydrogenation and corrosion behavior of LaNi5-based materials using galvanostatic charge/discharge measurements [J].

Bala, Henryk ;

Kukula, Iwona ;

Giza, Krystyna ;

Marciniak, Bernard ;

Rozycka-Sokolowska, Ewa ;

Drulis, Henryk .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (22) :16817-16822

[8] Rechargeable batteries with aqueous electrolytes [J].

Beck, F ;

Ruetschi, P .

ELECTROCHIMICA ACTA, 2000, 45 (15-16) :2467-2482

[9] Electrochemical properties of LaY2Ni9 hydrogen storage alloy, used as an anode in nickel-metal hydride batteries [J].

Ben Belgacem, Yassine ;

Khaldi, Chokri ;

Boussami, Sami ;

Lamloumi, Jilani ;

Mathlouthi, Hamadi .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2014, 18 (07) :2019-2026

[10] Anisotropic diffraction peak broadening and dislocation substructure in hydrogen-cycled LaNi5 and substitutional derivatives [J].

Cerny, R ;

Joubert, JM ;

Latroche, M ;

Percheron-Guégan, A ;

Yvon, K .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 :997-1005

← 1 2 3 4 →