Air-metal hydride battery construction and evaluation

被引:34
作者
Sakai, T
Iwaki, T
Ye, Z
Noreus, D
机构
[1] UNIV STOCKHOLM,ARRHENIUS LAB,DEPT STRUCT CHEM,S-10691 STOCKHOLM,SWEDEN
[2] ROYAL INST TECHNOL,DEPT CHEM TECHNOL,S-10044 STOCKHOLM,SWEDEN
关键词
D O I
10.1149/1.2048459
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
An air-metal hydride battery (32 Ah) using a noble metal-free air electrode (300 cm(2)) was constructed and tested. The battery was charged with a third nickel mesh electrode and discharged using oxygen, with discharge voltages of 0.87 V at 3 A and 0.58 V at 30 A. The peak power was 25 W (83 mW/cm(2)) with oxygen and 15 W (50 mW/cm(2)) with air. Energy density and power density per total electrode weight were 120 Wh/kg at 3 A and 75 W/kg at 30 A, respectively. A low initial Wh efficiency (41%) due to a high charging voltage (1.95 V at 6 A) was raised to 58% by replacing the Ni mesh with a sintered nickel electrode (capacity 7.5 Ah). The new battery design (air-MH-Ni hybrid) allows two discharge possibilities, the air-MH couple for low voltage and low rate and the NiMH couple for high voltage and high rate discharges.
引用
收藏
页码:4040 / 4045
页数:6
相关论文
共 8 条
[1]   METAL HYDRIDE FUEL-CELLS - A FEASIBILITY STUDY AND PERSPECTIVES FOR VEHICULAR APPLICATIONS [J].
FOLONARI, C ;
IEMMI, G ;
MANFREDI, F ;
ROLLE, A .
JOURNAL OF THE LESS-COMMON METALS, 1980, 74 (02) :371-378
[2]   COBALT AND COBALT-BASED MACROCYCLE BLACKS AS OXYGEN-REDUCTION CATALYSTS IN ALKALINE FUEL-CELLS [J].
KIROS, Y ;
LINDSTROM, O ;
KAIMAKIS, T .
JOURNAL OF POWER SOURCES, 1993, 45 (02) :219-227
[3]   PYROLYZED MACROCYCLES ON HIGH SURFACE-AREA CARBONS FOR THE REDUCTION OF OXYGEN IN ALKALINE FUEL-CELLS [J].
KIROS, Y ;
SCHWARTZ, S .
JOURNAL OF POWER SOURCES, 1991, 36 (04) :547-555
[4]  
KURIYAMA N, 1994, HYDROGEN ENERGY PROC, V10, P1713
[5]  
LINDSTROM O, 1989, S FUEL CELLS, V4
[6]  
SAKAI T, 1992, ELECTROCHEMICAL SOC, P59
[7]  
SARRADIN J, 1979, POWER SOURCES, V7, P345
[8]  
VIDEM K, 1978, HYDRIDES ENERGY STOR, P463