金属铝配位氢化物的储锂机理研究

项目名称： 金属铝配位氢化物的储锂机理研究

项目编号： No.51201151

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 金属材料学科

项目作者： 梁初

作者单位： 浙江工业大学

项目金额： 25万元

中文摘要： 能源危机和环境污染是当今世界面临的一个严重问题，发展锂离子电池电动汽车是缓解该问题的有效途径之一。然而，锂离子电池的能量密度是目前车载锂离子电池走向大规模产业化的一个主要瓶颈。本项目以开发新型高能量密度储锂材料为目标，对碱金属、碱土金属和过渡金属铝配位氢化物的电化学储锂性能及其储锂机理进行基础科学研究。具体内容包括：新型过渡金属铝配位氢化物的可控合成与结构表征；新型金属铝配位氢化物的储放锂机理；金属铝配位氢化物储放锂的循环容量衰退机理。本项目的研究旨在揭示影响新型金属铝配位氢化物储锂性能的关键因素及其机理，研制出一类综合性能较好的新型高能量密度储锂材料，为新型高能量密度储锂材料的进一步研究和开发奠定理论与技术基础。

中文关键词： 金属配位氢化物；微结构；新型储锂材料；电化学性能；储锂机理

英文摘要： Energy crisis and environmental pollution have become the serious problems facing the world today. Developing lithium-ion batteries driven vehicles is one of the effective ways to relieve the energy crisis and environmental pollution. However, energy density is the main bottleneck for the large-scale applications of current on-board lithium ion batteries. In this project, several important fundamental problems in the alkali, alkaline-earth and transition metal alanates for lithium storage will be investigated for developing novel lithium storage materials with high-density. The important fundamental problems are as follows: A) controllable synthesis and structural characterization of new transition metal alanates, B) electrochemical lithium storage mechanisms of new metal alanates, and C) cycling degradation mechanisms of metal alanates for lithium storage. The purpose of this proposal is to reveal the key influence factors of lithium storage properties of new metal alanates and corresponding mechanisms, and then develop new high-density lithium storage materials with good electrochemical performances. This study will provide a theoretical and technological guide for further research and development of high-density lithium storage materials.

英文关键词： Metal Complex Hydrides；Microstructures；New Lithium Storage Materials；Eletrochemical Properties；Lithium Storage Mechanisms