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| 含纳米微晶纤维素的硫酸胶体电解质 | |
| 引用本文： | 石光,吴妙娟,潘珂,向力,陈红雨. 含纳米微晶纤维素的硫酸胶体电解质[J]. 蓄电池, 2011, 48(6): 243-247,256 |
| 作者姓名： | 石光 吴妙娟 潘珂 向力 陈红雨 |
| 作者单位： | 1. 华南师范大学化学与环境学院,广东广州510006;广西天鹅蓄电池有限责任公司,广西梧州543000;广东高校储能与动力电池产学研结合示范基地,广东广州510006 2. 华南师范大学化学与环境学院,广东广州,510006 3. 广西天鹅蓄电池有限责任公司,广西梧州,543000 4. 华南师范大学化学与环境学院,广东广州510006;广东高校储能与动力电池产学研结合示范基地,广东广州510006;电化学储能材料与技术教育部工程研究中心,广东广州510006 |
| 摘 要： | 以45％的硫酸为介质制备了纳米微晶纤维素(NCC),以此NCC硫酸悬浮液为添加剂,在气相纳米SiO2含量为4％不变的条件下,制备了一系列不同NCC含量的硫酸胶体电解液.TEM分析表明,NCC的直径约为70 nm、长度约为400 nm,孤立分散在尺寸约为15nm的SiO2网链结构中.对纳米SiO2/NCC/H2SO4胶体电解液进行了旋转粘度测试,结果表明添加适量的NCC能够降低胶体在较大旋转速率作用下的旋转粘度,同时增大较小旋转速率下的旋转粘度.循环伏安和交流阻抗分析表明,添加适量的NCC能减小电极的极化程度,降低电极电解液的界面电阻,提高电极的反应电流和电量,提高电极活性物质的利用效率. |
| 关 键 词： | 胶体电解液 纳米微晶纤维素 气相纳米SiO2 铅酸蓄电池 |
Effect of NCC on the performance of sulfuric acid gel electrolyte |
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| SHI Guang , WU Miao-juan , PAN Ke , XIANG Li , CHEN Hong-yu. Effect of NCC on the performance of sulfuric acid gel electrolyte[J]. Chinese Labat Man, 2011, 48(6): 243-247,256 | |
| Authors: | SHI Guang WU Miao-juan PAN Ke XIANG Li CHEN Hong-yu |
| Affiliation: | 1,3,4(1.School of Chemistry and Environment,South China Normal University,Guangzhou Guangdong 510006;2.Guangxi Swan Storage Battery Co.,Ltd.,Wu zhou Guangxi 543000;3.Production-Education-Research Base of Energy Storage and Power Sources of Guangdong Higher Education Institutes,South China Normal University,Guangzhou Guangdong 510006;4.Engineering Research Center of Electrochemical Materials and Technology on Energy Storage,Ministry of Education,Guangzhou Guangdong 510006,China) |
| Abstract: | Nano-crystalline cellulose(NCC) sulfuric acid suspension,which was prepared in 45 % sulfuric acid solution,was acted as a kind of additive for fumed sulfuric acid gel electrolyte,by this way,a series of gelled electrolyte with different content of NCC were prepared in 1.28 % sulfuric acid solution and fumed nano-SiO2 content was 4 %.TEM analysis showed that Nano-crystalline cellulose was about 70 nm in diameter and 400 nm in length,and was isolated scattered in the network of nano-SiO2.Rotary viscometer testing indicated that the viscosity of gelled electrolyte could be decreased under larger rotation rate,while increased under small rotation rate by adding appropriate amount of NCC.Cyclic voltammetry(CV)and impedance spectroscopy(EIS) analysis indicated that NCC could reduce the polarization degree of electrode and the resistance of interface between electrode and electrolyte,increase the reaction current and electrical quantity of electrode with the improvement of utilization ratio of active materials. |
| Keywords: | gelled electrolyte nano-crystalline cellulose fumed nano-SiO2 lead-acid battery |
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