高效率多硫化钠溴储能电池的研究.pdf

第33卷第1期
电
也
Vol 33, No. 1
2003年
BATTERY BIMONTHLY
Feb.,2003
高效率多硫化钠/溴储能电池的研究
葛善海,衣宝廉,顾红星,张华民
中国科学院人连化学物理研究所燃料屯池工稈屮心,辽宁人连116023)
要:采用南温还原的方法制各了多硫化钠/溴储能电池负用Ni/C催化剂,Ni/C、Pu/C分别是多硫化钠/溴储能电池负
极和正极性能艮好的电催化剂。系统地研究了、 lafon膜的厚度、电催化剂含量、操作条件対电池充放电性能的影响。采用
较厚的膜,电池性能稍做降低,但可减少阴离子的渗透。这种新型储能电池放电时功率密度达到0.7W/cm2(U=1.0V)
循环性能研究表岄:采用较厚的膜,电池的充放电性能好,性能衰减很小,在100mA/cm2充放电,电压效率达到86.7%
关键词:阳离子交换膜;储能电池;多硫化钠;溴;P/C催化剂
中分类号:TM911.4文献标识码:A文章编号:1001-1579(2003)01-0012-03
Study on high efficiency sodium polysulfide/
bromine energy storage cell
GE Shan-hai, YI Bao-lian, GU Hong-xing, ZHANG Hua-min
( Fuel Cell RD Center, Dalian Institute of hemical Phyics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
Abstract: The catalyst of nickel supported on carbon was made by reduction with hydrogen at high temerature Ni/C catalyst
and Pt/C catalyst had high performance for the negative electrode and sitive electrode of sodium polysulfide/bromine energy stor
nge cell respectively. Effect of the thickness of Nafion membrane, ontent of electroca lyst, operation conditions on the charging
and discharing erformance of the cell were investi. When the thickness of membrane increased, the cell performance de
creased slighty but the undesirable permeation rate of anions decreased. The power output density of up to 0.7 W/cm(U=1.0
V) was obtained in this novel energy storage system. It could be seen that the sodium polysulfide/bromine energy storage cell using
thick membrane maintained good performance over the whole charge and discharge cycles. The performance deterioration of the cell
and low. The cell potential fficiency of up to 86.7 was obtained when both charging and discharging wer densities were 100
MA/cmt
ey words: cation exchange membrane; energy storage cell; sodium polysulfide; bromine; Pu/C catalyst
用石墨作多硫化钠/溴储能电池电时,为提南电极活性,10%的H2O2」80て的水浴中加热1h以除去有机杂质,然后将
要担载适当的健化剂,CuS、CS、PbS可用」多硫化物还原体膜用去离子水洮涤;再将膜放在0.5mol/LH2S4溶液中Jj
80℃的水浴中加热1h以除去无札机杂质,将膜用去离子水洗涤
博将膜放在1.0mol/ L NAOHI溶液中」80℃的水浴中加热2h,
实验部分
可样用去离子水洗涤。
1.1膜的预处理
1.2电极的制备
用钠型 Nafion膜作为阳离子交换膜,膜在使用前需要将氧
采用高温还原的方法制备多谕化钠/储能电池负极用
型膜转化为钠型膜,并除去膜中杂质。先将 Nafion膜加入u=NiC催化剂,m(Ni):m(C)=1:1。XC72碳与Ni(NO3)2水溶
作者简
芸善海(1970-),男,江苏人,中国科学院人连化学物理研究所副研究员,博士,研究方问:燃料电池:
衣宋廉(1938-),男,道宁人,中国科学院大连化学物理研究所研究员,博十生导师,总T.程师,研究方向:燃料电池;
红足(1978-),男,湖北人,中困科学院大连化学物理研究所木科生,研究方向:燃料电池;
张华民(1955-),男,山东人,中国科学院大述化学物理研究所研究员,博十牛导师,研究方向:燃料电池
基金项口:中国博上斤科学基金资助项∏