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RISS 인기검색어
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- 저자 : June Fang (검색결과 2 건)
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Minireview of potential applications of hydrochar derived from hydrothermal carbonization of biomass
June Fang,Lu Zhan,옥용식,Bin Gao 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
This review provides a brief overview of the potential applications of hydrochar and its derivatives. Itfirstsummarized the key processes of hydrothermal carbonization (HTC) of biomass and basic properties ofthe resulting hydrochar. Most of the efforts of this review is then on reviewing the potential applicationsof hydrochar in variousfields including environment, energy, adsorbent and medical applications. It alsodiscusses different modification and activation methods to produce hydrochar-based engineered carbonmaterials for enhanced performances in those applications, particularly with respect to their applicationas low-cost adsorbents for the removal of heavy metals, organics, phosphate and pathogens.
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Electrical Power From Nanotube and Graphene Electrochemical Thermal Energy Harvesters
Kang, Tae June,Fang, Shaoli,Kozlov, Mikhail E.,Haines, Carter S.,Li, Na,Kim, Yong Hyup,Chen, Yongsheng,Baughman, Ray H. WILEY‐VCH Verlag 2012 Advanced functional materials Vol.22 No.3
<P><B>Abstract</B></P><P>Nanocarbon‐based thermocells involving aqueous potassium ferro/ferricyanide electrolyte are investigated as an alternative to conventional thermoelectrics for thermal energy harvesting. The dependencies of power output on thermocell parameters, such as cell orientation, electrode size, electrode spacing, electrolyte concentration and temperature, are examined to provide practical design elements and principles. Observation of thermocell discharge behavior provides an understanding of the three primary internal resistances (i.e., activation, ohmic and mass transport overpotentials). The power output from nanocarbon thermocells is found to be mainly limited by the ohmic resistance of the electrolyte and restrictions on mass transport in the porous nanocarbon electrode due to pore tortuosity. Based on these fundamental studies, a comparison of power generation is conducted using various nanocarbon electrodes, including purified single‐walled and multi‐walled carbon nanotubes (P‐SWNTs and P‐MWNTs, respectively), unpurified SWNTs, reduced graphene oxide (RGO) and P‐SWNT/RGO composite. The P‐SWNT thermocell has the highest specific power generation per electrode weight (6.8 W/kg for a temperature difference of 20 °C), which is comparable to that for the P‐MWNT electrode. The RGO thermocell electrode provides a substantially lower specific power generation (3.9 W/kg).</P>
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