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植物微管阴极在可生物降解电池中的蒙特卡罗模拟与实验验证。

Monte Carlo simulation and experimental validation of plant microtubules cathode in biodegradable battery.

机构信息

Research and Development Center, Ram Charan Co Pvt Ltd - Entity1, Chennai, Tamilnadu, 600 002, India.

Department of Physics and Nanotechnology, SRMIST, Kattankulathur, Chennai, Tamilnadu, 603203, India.

出版信息

Sci Rep. 2023 Jun 27;13(1):10393. doi: 10.1038/s41598-023-36902-x.

DOI:10.1038/s41598-023-36902-x
PMID:37369685
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10300097/
Abstract

For the first time, electrochemical methods are utilized to study the response of tubulin monomers (extracted from plant source such as Green Peas: Arachis Hypogea) towards charge perturbations in the form of conductivity, conformational changes via self-assembly and adsorption on Au surface. The obtained dimerization and surface adsorption energetics of the tubulins from Cyclic Voltammetry agree well with the literature value of 6.9 and 14.9 kCal/mol for lateral and longitudinal bond formation energy respectively. In addition to the effects of charge perturbations on change in structure, ionic and electronic conductivity of tubulin with increasing load are investigated and found to be 1.25 Sm and 2.89 mSm respectively. The electronic conductivity is 1.93 times higher than the literature value of 1.5 mSm, demonstrating the fact that the microtubules (dimer of tubulins, MTs) from plant source can be used as a semiconductor electrode material in energy conversion and storage applications. Thus, motivated by the Monte Carlo simulation and electrochemical results the MTs extracted from plant source are used as cathode material for energy storage device such as Bio-battery and the Galvanostatic Charge/Discharge studies are carried out in coin cell configuration. The configuration of the bio-battery cell is as follows: Al/CB//PP-1M KCl//MTs/SS; where SS and Al are used as current collectors for cathode and anode respectively, Polypropylene (PP) membrane soaked in 1M KCl as electrolyte and Carbon Black (CB) is the anode material. Another configuration of the cell would be replacement of CB by biopolymer such as ethyl cellulose anode (Al/EC/PP-1M KCl/MTs/SS).

摘要

首次采用电化学方法研究微管蛋白单体（从植物来源（如绿豆：Arachis Hypogea）中提取）对电荷扰动的响应，这些电荷扰动以电导率的形式、通过自组装和在 Au 表面上的吸附来改变构象。从循环伏安法得到的微管蛋白二聚体和表面吸附能与文献值 6.9 和 14.9 kCal/mol 分别对应于横向和纵向键形成能吻合良好。除了电荷扰动对结构变化的影响外，还研究了微管蛋白的离子和电子电导率随负载的增加而变化，发现分别为 1.25 Sm 和 2.89 mSm。电子电导率比文献值 1.5 mSm 高 1.93 倍，证明了植物来源的微管蛋白（微管蛋白二聚体，MTs）可以用作能量转换和存储应用中的半导体电极材料。因此，受蒙特卡罗模拟和电化学结果的启发，从植物来源提取的 MTs 被用作储能装置（如生物电池）的阴极材料，并在扣式电池配置中进行了恒电流充放电研究。生物电池的结构如下：Al/CB//PP-1M KCl//MTs/SS；其中 SS 和 Al 分别用作阴极和阳极的集流器，聚丙烯（PP）膜浸泡在 1M KCl 中作为电解质，碳黑（CB）是阳极材料。电池的另一种结构是用乙基纤维素阳极（Al/EC/PP-1M KCl/MTs/SS）代替 CB。

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