Investigation of Novel Materials for Hybrid Ion Batteries

适用于EPSRC能源材料和储能领域。项目概述：锂电池是一种用途广泛、用途广泛的储能设备(并且仍然是交通电气化的热门竞争者)。然而，如果要实现电力和能源的阶段性变化，就需要替代的颠覆性技术。最近，围绕Na和K离子体系的研究出现了协调一致的加速，与Li相比，这些元素的普遍存在性质带来了明显的好处。该项目将开发用于混合阳离子或混合离子电池的新型材料。其他关于混合离子方法的研究也使用了水溶液体系，但这些电池的能量密度有限。我们建议研究一系列合成材料中的插层和转化反应，如含过渡金属氧化物的碳和混合碱(Li，Na，K)阳离子电池的硫酸盐。与此同时，这些新型电池的电解液系统将被开发出来，以优化混合离子方法的兼容性。这些材料将用粉末X射线衍射、颗粒大小和表面积技术进行分析，并进行全面的电化学测试，以阐明其性能。表征将包括一些固态核磁共振研究(在适当的情况下)，以阐明混合离子系统中充放电反应的机制。因此，目的是开发一种用于混合离子电池的新型材料，并与仅限锂离子相比，改善这些材料的功率和能量。目的：-研究混合阳离子电池的新材料--建立和验证新电池化学物质和电化学测试方法。-2和3电极配置的阳极的全面电化学测试和验后分析-合成和表征新型氧化物和硫酸盐混合材料

Fits into EPSRC area of energy materials and energy storage. Project Overview: Lithium batteries are useful and versatile energy storage devices for a wide array of applications (and are still the favoured contender for transport electrification). However, alternative disruptive technologies are required if a step change in power and energy is to be realised. There has been a more recent concerted acceleration of the research around Na and K-ion systems, with clear benefits seen regarding the ubiquitous nature of these elements compared with Li. This project will develop novel materials for a mixed cation or hybrid-ion batteries. Other studies on mixed ion approaches have used aqueous electrolyte systems but the energy density of these batteries was limited. We propose to investigate the intercalation and conversion reactions in a range of synthesized materials, such as carbons with transition metal oxides and sulfates for mixed alkali (Li, Na and K) cation batteries. In parallel, the electrolyte systems of these novel batteries will be developed to optimise the compatibility of the hybrid ion approach. The materials will be analysed using powder x-ray diffraction, particle size and surface area techniques with comprehensive electrochemical testing to elucidate their performance. Characterisation will incorporate some solid-state NMR investigations (in-situ where appropriate) to illuminate the mechanisms of charge-discharge reactions in mixed ion systems. The aim is therefore to develop a novel materials for a hybrid-ion battery and improve upon the power aspects and energy of these materials compared to lithium ion only. Objectives: - Investigate novel materials for mixed cation batteries - Establish and validate material and electrochemical test methods for new battery chemistries. - Comprehensive electrochemical testing and post-mortem analysis of the anodes in 2 and 3 electrode configurations - Synthesise and characterise novel mixed oxide and sulphate materials