ENHANCED RESIDENTIAL ENERGY STORAGE PROSPECTS VIA NOVEL EMERGING LITHIUM ION BATTERY CHEMISTRIES

K. DARCOVICH; E. R. HENQUÍN; B. KENNEY; I.J. DAVIDSON; N. SALDANHA; I. BEAUSOLEIL-MORRISON

Glasgow

Congreso; 2nd International Conference in Microgeneration and Related Technologies in Buildings (MICROGEN`II); 2011

Converging factors have led to the use of large-scale lithium ion batteries in residential energy systems. As micro-cogeneration systems gain acceptance, the benefits of electrical storage encompass cost savings, operational flexibility, and reduced stress on the distribution grid as well as a degree of contingency for installations relying upon unsteady renewables. Concurrently, significant advances in component materials used to make lithium ion cells offer performance improvements in terms of power output, energy capacity, robustness and longevity, thereby enhancing the value of electrical storage in residential cogeneration installations. The present study will examine a residential cogeneration scenario consisting of a Stirling engine and a nominal 2 kW/6 kWh lithium ion battery in a Canadian context. The benefits of a new Li-NCA battery chemistry, as well as a conceptual state-of-the-art battery with an ultra-high voltage Ni/Ti-doped lithium manganate cathode will be demonstrated by simulation, through comparison to a conventional LiMn2O4 spinel-type battery.