High-performance ultra-low-carbon Geopolymer heat Battery for thermochemical energy storage in net-zero buildings (GeoBattery)

用于净零建筑热化学储能的高性能超低碳地质聚合物热电池（GeoBattery）

• 批准号: EP/W010828/1
• 负责人: Xinyuan Ke
• 金额: $ 40.57万
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW010828%2F1
• 关键词: performance; ultra; low; carbon; Geopolymer

Space heating currently accounts for 25% of the UK's energy consumption and 17% of its carbon emissions. The effective and efficient recovery, storage, and reuse of waste heat, together with renewable energy, play indispensable roles in decarbonisation of heating in buildings. The thermochemical energy storage materials possess the highest volumetric energy density comparing to phase change and sensible heat storage materials. However, the design and manufacture of thermochemical energy storage materials are still facing the challenges of high cost, low sustainability, and limited heating power. There also lacks fundamental understandings of the properties of materials that control the cyclic energy storage performances and structural stabilities. These have brought significant challenges to optimisation and implementation of the thermochemical energy storage techniques for domestic application. This project adopts novel research approaches for civil engineering materials to tackle these standing challenges faced by developing thermochemical energy storage materials. Versatile high-performance heat battery materials will be developed from sustainable low-cost civil engineering material geopolymers. Lightweight geopolymer composite materials with enhanced heat and mass transport properties and thermochemical energy storage capacity will be developed through green synthesis routes. The first structural stability assessment model for predicting the service cycle life of heat battery materials will be proposed from the extended chemo-mechanical salt damage model for inorganic porous building materials. The materials fabrication technology and fundamental understanding of the degradation mechanism developed in this project will be transferable to versatile "salt-in-matrix" TCES composites. The outcomes developed from this project will drastically improve the sustainability and resilience of thermal energy storage technologies, for decarbonisation of heating in existing and new-built buildings.

目前，空间供暖占英国能源消耗的25%，碳排放量的17%。废热的有效和高效的回收、储存和再利用，以及可再生能源，在建筑供暖的脱碳中发挥着不可或缺的作用。与相变和显热储能材料相比，热化学储能材料具有最高的体积能量密度。然而，热化学储能材料的设计和制造仍然面临着成本高、可持续性低、加热功率有限的挑战。对控制循环储能性能和结构稳定性的材料特性也缺乏基本的理解。这些都给热化学储能技术在国内应用的优化和实施带来了重大挑战。本项目采用新颖的土木工程材料研究方法来解决开发热化学储能材料所面临的这些长期挑战。多功能高性能热电池材料将从可持续的低成本土木工程材料地聚合物发展。轻质地聚合物复合材料具有增强的传热传质性能和热化学储能能力，将通过绿色合成路线发展。从无机多孔建筑材料的扩展化学-机械盐损伤模型出发，提出了预测热电池材料使用循环寿命的第一个结构稳定性评估模型。本项目中开发的材料制造技术和对降解机制的基本理解将转移到通用的“盐基”TCES复合材料中。该项目开发的成果将大大提高热能储存技术的可持续性和弹性，用于现有和新建建筑的供暖脱碳。

项目成果

Atomic-scale characterisation of sodium aluminosilicate hydrates (N-A-S-H) and Mg-substituted N(-M)-A-S-H using XANES

• DOI: 10.1016/j.apgeochem.2022.105515
• 发表时间: 2022-11
• 期刊: Applied Geochemistry
• 影响因子: 3.4
• 作者: Xinyuan Ke;Vahiddin Alperen Baki;A. Large;G. Held;B. Walkley;Jiaqi Li