RENEWABLE RESOURCES AND CLEAN GROWTH - Developing electroactive materials formed through biological processes for energy storage applications

可再生资源和清洁增长 - 开发通过生物过程形成的电活性材料用于储能应用

• 批准号: 2890741
• 金额: --
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2890741
• 关键词: RENEWABLE; RESOURCES; CLEAN; GROWTH; Developing

Currently, Ni containing oxides, hydroxides and sulfides are being investigated as possible supercapacitor materials for energy storage applications. The synthetic processes involved often involve high temperatures and/or toxic chemicals (e.g. H2S). Development of these materials involves controlling the composition, particle size and morphology to optimise their electrochemical characteristics. Materials formed though biological processes would be a novel route to produce Ni containing phases, such as Ni(OH)2, NixSy. Synthetic biology tools and techniques will be employed in order to engineer nanoparticle-synthesising bacteria in order to optimise the particles for use. The project proposed will cover both the biological synthesis of the material, the structural and electrochemical characterisation of the materials and development of prototype devices.The anaerobic bacterium Desulfovibrio alaskensis G20 is known to produce NixSy nanoparticles from a nickel containing solution1 and can recover Ni in this way from lithium ion battery leachates2. Proteomics data has already suggested a number of genes that could be targeted to alter size, composition and morphology. Synthetic biology tools developed specifically for use with D. alaskensis will be employed to test the impact of alterations to these genes. Beneficial mutations will be combined to ensure that the nanoparticles being produced are optimised for their electrochemical storage properties and the bacteria producing them are optimised for the process. The phases that are produced would be characterised by a range of techniques including X-ray Powder Diffraction to identify the crystalline phases present, Scanning Electron Microscopy to investigate particle size and morphology, crucial for energy storage applications, thermal analysis to study high temperature stabilities and electrochemical characterisation to investigate the electroactive properties. Once materials with good electrochemical properties have been established, methods to develop devices for energy applications, such as supercapacitors or batteries will be established. These devices will then be tested for their long term stability.Monitoring structural changes as a function of potential, i.e. any changes that may occur on using the device, gives key information on the performance of the material whilst in-service. With the new state-of-the-art X-ray Powder Diffraction Facility recently established in the Centre for Science at Extreme Conditions (CSEC), development of electrochemical cells that can couple with the X-ray Powder diffractometer will allow these changes to be investigated.

目前，人们正在研究含镍氧化物、氢氧化物和硫化物作为超级电容器储能材料的可能性。所涉及的合成过程通常涉及高温和/或有毒化学物质(如硫化氢)。这些材料的开发包括控制成分、颗粒大小和形貌，以优化其电化学性能。生物法合成Ni(OH)2、NixSy等材料是制备含镍相的一条新途径。将使用合成生物学工具和技术来设计合成纳米颗粒的细菌，以便优化颗粒以供使用。拟议的项目将包括材料的生物合成、材料的结构和电化学特征以及原型设备的开发。已知厌氧细菌阿拉斯加脱硫弧菌G20可以从含镍的溶液中产生NixSy纳米颗粒1，并可以通过这种方式从锂离子电池浸出液中回收镍2。蛋白质组学数据已经表明，一些基因可能是改变大小、组成和形态的靶点。将使用专门为阿拉斯加锥虫开发的合成生物学工具来测试这些基因改变的影响。将结合有益的突变，以确保正在生产的纳米颗粒针对其电化学存储性能进行优化，并确保生产它们的细菌针对该过程进行优化。所产生的物相将通过一系列技术进行表征，包括用于识别存在的晶相的X射线粉末衍射、用于研究对于储能应用至关重要的颗粒大小和形貌的扫描电子显微镜、用于研究高温稳定性的热分析以及用于研究电活性性质的电化学表征。一旦建立了具有良好电化学性质的材料，就将建立开发用于能源应用的设备的方法，如超级电容器或电池。然后将测试这些设备的长期稳定性。监测作为电位函数的结构变化，即在使用设备时可能发生的任何变化，提供有关材料在使用中的性能的关键信息。随着最近在极端条件科学中心(CSEC)建立的最先进的X射线粉末衍射设备，可以与X射线粉末衍射仪耦合的电化学电池的开发将使这些变化得以研究。