Pyroelectric power generation from the waste heat of automotive exhaust gas,Sustainable Energy & Fuels

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Pyroelectric power generation from the waste heat of automotive exhaust gas
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2019/12/24 , DOI: 10.1039/c9se00283a
Juyoung Kim _{1,

2,

3,

4} , Satoru Yamanaka _{1,

2,

3,

4} , Ichiro Murayama _{1,

2,

3,

4} , Takanori Katou _{1,

2,

3,

4} , Tomokazu Sakamoto _{1,

2,

3,

4} , Takuro Kawasaki _{4,

5,

6,

7} , Tatsuo Fukuda _{4,

6,

8,

9} , Tohru Sekino _{4,

10,

11,

12} , Tadachika Nakayama _{4,

13,

14} , Masatoshi Takeda _{4,

13,

14} , Masaaki Baba _{4,

13,

14} , Hirohisa Tanaka _{4,

15,

16} , Kazuya Aizawa _{4,

5,

6,

7} , Hideki Hashimoto _{4,

10,

11,

12} , Yoonho Kim _{1,

2,

3,

4}

Affiliation

Waste heat is a potentially exploitable energy source but remains a problem awaiting a solution. To explore solutions for automobile applications, we investigate pyroelectric power generation from the temperature variation of exhaust gas using a novel electro-thermodynamic cycle. Niobium-doped lead zirconate titanate stannate (PNZST) ceramics were applied as pyroelectric materials, and their structural characteristics were investigated. In the driving cycle assessments (JC-08) using real exhaust gas, the maximum power generated was identified as 143.9 mW cm⁻³ (777.3 J L⁻¹ per 1 cycle) over a temperature range of 150–220 °C and an electric field of 13 kV cm⁻¹. The net mean generating power of the total driving cycle was 40.8 mW cm⁻³, which is the most enhanced result in our power generating systems to date and 314 times greater than our first report. Materials with sharp transition behaviors with the temperature and electric field are worthy of study with regard to pyroelectric energy harvesting materials, and their corresponding crystal and domain structures were investigated to optimize performance.

中文翻译：

汽车废气余热发电

废热是一种潜在的可利用能源，但仍然是一个问题，亟待解决。为了探索汽车应用的解决方案，我们使用新颖的电热循环研究了废气温度变化产生的热电发电。以铌酸锆钛酸钛酸铅（PNZST）陶瓷为热电材料，研究了其结构特性。在使用实际废气的驾驶循环评估（JC-08）中，在150–220°C的温度范围和电场范围内，所产生的最大功率被确定为143.9 mW cm ^-3（每1个循环777.3 JL ^-1） 13 kV cm ^-1。整个行驶周期的净平均发电功率为40.8 mW cm ^-3，这是迄今为止我们的发电系统中得到的最增强的结果，比我们的第一份报告大314倍。对于热电能量收集材料，具有随温度和电场急剧变化的行为的材料值得研究，并对其相应的晶体和畴结构进行了研究，以优化性能。

更新日期：2020-03-03

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