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氯化锂溶液为工质的溶液浓差发电实验研究

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Indexed by:期刊论文

Date of Publication:2017-07-24

Journal:大连理工大学学报

Included Journals:CSCD、Scopus

Volume:57

Issue:4

Page Number:337-344

ISSN No.:1000-8608

Key Words:低品位热能;氯化锂溶液;逆向电渗析电池;浓差发电

Abstract:利用配制的氯化锂溶液作为工作介质,通过实验研究稀溶液和浓溶液浓度变化对逆向电渗析电池组(REDCs)开路电压、内阻以及功率密度等电池特性参数的影响.研究结果表明,由10个电池单元构成的REDCs在所研究的浓度范围内,最大开路电压为1.88 V,最大功率密度为1.67 W/m2.电池的开路电压随稀溶液浓度增大而降低,而随浓溶液浓度增大出现先增后降的趋势.电池内阻随浓、稀溶液的浓度增大而降低.电池的端电压与功率密度受电流影响.随电流增大,端电压呈线性下降的趋势,而功率密度变化却呈上凸的二次曲线.当电路总电阻为电池内阻两倍时,电池功率密度达到最大值.

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