Flexible cellulose based polypyrrole-multiwalled carbon nanotube films for bio-compatible zinc batteries activated by simulated body fluids
Flexible cellulose based polypyrrole-multiwalled carbon nanotube films for bio-compatible zinc batteries activated by simulated body fluids
复制标题
DOI：
10.1039/c3ta13137h
复制
发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Liu, Hua Kun
中科院分区：
文献类型：
--
作者：
Li, Sha;Guo, Zai Ping;Liu, Hua Kun
本工作旨在为可植入生物电子细胞开发生物相容性无毒材料。采用化学方法合成了不同配比的聚吡咯（PPy）-碳纳米管（CNT）复合材料，并以纤维素纸为支撑体，将其用作阴极。由于锌箔在水溶液中的无毒和中等溶解速率，其被用作阳极材料。将具有不同蛋白质浓度的模拟体液（SBF）用作该电池系统中的电解质。PPy-CNT竖条Zn电池能够在无蛋白质的SBF中以60 μ A cm（-2）的电流密度放电长达24.5小时。还使用含有不同浓度的牛血清白蛋白（BSA）的SBF对电池进行了体外测试。这样的电池可以充电高达35.1小时（1.26瓦时），在电解质含有8克L-1 BSA，这是10%的真正的蛋白质浓度的血浆。研究了在电解液中加入BSA对PPy-CNT阴极的阳极反应和氧化还原性能的影响。
This work aims to develop biocompatible non-toxic materials for implantable bio-electronic cells. Polypyrrole (PPy)-carbon nanotube (CNT) composites with varied ratios of PPy to CNTs were chemically synthesized and used as cathodes with the support of cellulose paper. Zinc foil was used as the anode material due to its non-toxicity and moderate dissolution rate in aqueous solutions. Simulated body fluids (SBFs) with various protein concentrations were applied as electrolytes in this battery system. The PPy-CNT vertical bar Zn cell is capable of being discharged up to 24.5 hours at a current density of 60 mu A cm(-2) in a protein free SBF. The batteries have also been tested in vitro using SBFs containing bovine serum albumin (BSA) with different concentrations. Such a battery can be charged up to 35.1 hours (1.26 W h) in the electrolyte containing 8 g L-1 BSA, which is 10% of the genuine protein concentration of blood plasma. The effects of adding BSA to the electrolyte on both the anodic reactions and the redox capabilities of the PPy-CNT cathodes are also investigated.