Introduction Waste heat recovery opportunity to improve system level efficiency Thermoelectric generator (TEG) no moving parts high reliability Environmentally Friendly Most TEG materials intermetallic compounds or metal low melting and decomposition, temperature, toxicity or scarcity. This research looks into developing thermoelectric ceramic materials for exhaust waste heat recovery. Uday M. Basheer Al-Naib , Alias Mohd Noor , Srithar Rajoo, Mohammed Mustafa Abdelhafd, Lim Chin Hwa UTM Centre for Low Carbon Transport in cooperation with Imperial College London, Universiti Teknologi Malaysia, 81310 Johor, Malaysia. Possible Thermoelectric Applications Research Approach TEG Modules TEG modules consist of 2 materials : N-type materials Voltage is higher at the hot side compared to cold side P-type materials Voltage is higher at the cold side compared to hot side Modeling of Thermoelectric Module Advantages of Thermoelectric Ceramic materials Further Information: Srithar Rajoo Director UTM LOCARTIC Universiti Teknologi Malaysia 81310 Johor, Malaysia Tel : +6075536225 Fax : +6075566159 Web : www.utm.my/locartic Further Information: Uday M. Basheer Al-Naib Senior Lecturer/Researcher Fellow UTM LOCARTIC Universiti Teknologi Malaysia 81310 Johor, Malaysia Tel : +6075536495 H/P : +60174971905 Web :mech.utm.my/uday/ P-type materials Preparation Ca3CO4O9 CaCo3, Ca(NO3)2 Co3O4, Co(NO3)2 Solid state reaction, Sol gel methods Calcination (300-500°C) Grinding and milling Fabrication process P-type powder ready Characterizations N-type materials Preparation Zn precursor Mixture preparation of Zinc, Aluminum or Gallium nitrates Stirred at (60 °C) Solution of NH4HCO3 Hydrolysis preparation of gel aging for 1 hr. ambient temperature Drying removal solvents (50-100°C) Firing process (1000-1400°C) Grinding and milling Fabrication process N-type powder ready Characterizations N P N P N P P P Heat N-type P-type Ca3CO4O9 nanoparticles ZnO nano particles EDX analysis EDX analysis X-ray spectroscope (EDS) Elemental Mapping Analysis for nanoceramics using in this project Ca3CO4O9 ZnO EDS analysis EDS analysis Nano particles Nano particles Thermoelectric effect is the conversion of thermal energy into electrical energy, due to temperature gradient. Thermoelectric combines 3 effects, Seebeck Effect Temperature difference generates electric potential (voltage) * Used for temperature measurement with thermocouples. Peltier Effect An electrical current creates a cooling or heating effect at the junction depending on the direction of current flow. * Used for accurate cooling. Thomson Effect Heat generation is proportional to electric current and temperature gradient. TEG Modules P-type N-type ZnO Doped Al Ca3CO4O9 Doped Bi Heat Transfer Ceramic Electronics Nano Design and Modeling Preparation and Fabrication Module fabrication and Testing Design of Prototype Research at LOCARTIC focuses on development and testing of thermoelectric ceramic materials for exhaust energy recovery 3D TEG Module Surface: Temperature (°C)