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Deprecated: Implicit conversion from float 265.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Nat+Commun 2016 ; 7 (ä): ä Nephropedia Template TP
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High-efficiency electrochemical thermal energy harvester using carbon nanotube aerogel sheet electrodes #MMPMID26837457
Im H; Kim T; Song H; Choi J; Park JS; Ovalle-Robles R; Yang HD; Kihm KD; Baughman RH; Lee HH; Kang TJ; Kim YH
Nat Commun 2016[]; 7 (ä): ä PMID26837457show ga
Conversion of low-grade waste heat into electricity is an important energy harvesting strategy. However, abundant heat from these low-grade thermal streams cannot be harvested readily because of the absence of efficient, inexpensive devices that can convert the waste heat into electricity. Here we fabricate carbon nanotube aerogel-based thermo-electrochemical cells, which are potentially low-cost and relatively high-efficiency materials for this application. When normalized to the cell cross-sectional area, a maximum power output of 6.6?W?m?2 is obtained for a 51?°C inter-electrode temperature difference, with a Carnot-relative efficiency of 3.95%. The importance of electrode purity, engineered porosity and catalytic surfaces in enhancing the thermocell performance is demonstrated.