糖心logo入口

瓴愴姼雽�頃欔祼 Francis Verpoort 甑愳垬, 於╈爠靹� 鞎勳棸-鞐愳柎鞝勳��毳� 鞙勴暅 齑堦碃鞝勱赴頇旐暀韸轨劚鞚� ZIF 鞐愳柎鞝勱饭 臧滊皽 

Prof. Francis Verpoort, email: francis.verpoort@ghent.ac.kr 

頇橁步鞓れ椉瓿� 鞐愲剤歆�攵�臁膘潉 頃搓舶頃橁赴 鞙勴暣靹滊姅 觳�鞝曥棎雱堨�� 臧滊皽瓿� 須�鞙�鞝侅澑 鞐愲剤歆� 鞝�鞛レ澊 頃勳殧頃橃��毵� 鞚� 攵�攵勳潃 鞐�鞝勴瀳 鞏措牑鞖� 瓿检牅搿� 雮�鞎勳瀳雼�. 鞎勳棸-鞐愳柎鞝勳��電� 鞐愲剤歆� 氚�霃勱皜 雴掛晞 鞝勱赴鞛愲彊彀�鞚� 鞝勲牓鞗愳溂搿� 頃措嫻霅橂姅 鞐愲剤歆� 鞝�鞛リ碃搿� 齑夒�濍皼瓿� 鞛堧姅雿� 攴� 鞚挫湢電� 鞐愲剤歆� 鞝�鞛� 氚� 氤�頇橃潣 瓿检爼鞐愳劀 靷办唽 頇橃洂 (ORR)瓿� 靷办唽 氚╈稖 (OER)鞚� 毵れ毎 欷戩殧頃� 靷�鞎堨澊鞏挫劀 氚标笀, 鞚措Μ霌�, 耄�韰岆妱瓿� 臧欖潃 旮堨啀霌れ澊 靷办唽 頇橃洂瓿� 靷办唽 氚╈稖鞐愳劀鞚� 鞝勱赴 頇旐暀鞝� 齑夒Г搿� 靷�鞖╇悳雼�. 頃橃��毵� 牍勳嫾 牍勳毄瓿� 雮�鞚� 鞎堨爼霃勱皜 鞎勳棸鞐愳柎鞝勳��鞚� 靸侅梾頇旊ゼ 氚╉暣頃橁碃 鞛堨柎, 鞝勴喌鞝侅澑 旮堨啀 齑夒Г毳� 雽�觳� 頃犾垬 鞛堧姅 鞝�牍勳毄鞚措┐靹� 鞎堨爼鞝侅澑 鞚搓磤 靹彪姤鞚� 臧�歆� 鞝勱饭 鞛�耄岆ゼ 臧滊皽頃橂姅 瓴冹澊 甏�瓯挫澊雼�. 鞚挫檧 甏�霠�頃橃棳 瓴愴姼雽�頃欔祼 旮�搿滊矊旌犿嵓鞀� Francis Verpoort 甑愳垬 鞐瓣惮韺�鞚� Mu Shichun 甑愳垬 鞐瓣惮韺�瓿� 順戨牓頃挫劀 於╈爠 臧�電ロ暅 鞎勳棸鞐愳柎鞝勳��毳� 鞙勴暅 鞚挫皑鞗� 霌�鞏� 旮堨啀 ZIF搿滊秬韯� 韺岇儩霅� 齑堦碃鞝勱赴頇旐暀鞝來姽靹标臣 鞚搓磤靹彪姤鞚� 臧�歆� 鞐愳柎鞝勱饭鞚� 臧滊皽頄堧嫟.

雼�鞚� 鞝勱惮觳挫澑 鞚挫�� 旮堨啀 ZIF-L鞚� 鞐措秳頃措ゼ 韱淀暣 頉岆キ頃� 鞚搓磤靹� 鞛呾�� 霅� 鞐愳柎鞝勱饭鞚� Co臧� 霌れ柎鞛堧姅 歆堨唽-霃勴晳 韮勳唽雮橂吀韸滊笇 (Co-N-CNTs) 旌§姁鞚� 順曥劚霅滊嫟. 頋ル�鸽…瓴岆弰 鞐措秳頃� 頉勳棎 歆堨唽電� CNT鞚� 韺侅潉 臧�搿� 歆堧煬 旖旊皽韸胳檧毵� 瓿奠〈頃滊嫟. 霐半澕靹�, 頇滌劚 攵�鞙勲�滌劀 頀嶋秬頃� Co-N-C 攵�攵勳澊 CNT鞚� 響滊┐鞐� 鞕勳爠頌� 雲胳稖霅�鞙茧�滌崹, 鞚措姅 頄レ儊霅� 鞝勱赴 齑夒Г 韸轨劚鞐� 鞙犾澋 頃� 瓴冹溂搿� 於旍浮霅滊嫟. 瓴瓣臣鞝侅溂搿�, Co-N-CNT電� 鞁滍寪霅橂姅 Pt/C鞕� IrO2 氚� 雽�攵�攵� 氤措弰霅� 旮堨啀-鞙犼赴氍� 頂勲爤鞛� (MOF) 鞙犽灅 齑夒Г鞐� 牍勴暣 ORR 氚� OER鞐� 雽�頃� 鞖办垬頃� 鞝勱赴 齑夒Г 頇滌劚瓿� 鞎堨爼靹膘潉 雮橅儉雮鸽嫟. 1彀� 鞝勳��電� 1.365V 鞚� 雴掛潃 鞓ろ攬 鞝勳晻, ~90 mA cm^-2鞚� 鞝勲�� 氚�霃�, ~101 mW cm^-2鞚� 頂柬伂 鞝勲牓 氚�霃� 氚� 鞖办垬頃� 鞎堨爼靹� (15鞁滉皠鞚� 130 靷�鞚错伌 於╈爠-氚╈爠 韻柬彫毹检姢)鞚� 雮橅儉雰堧嫟. 韸鬼瀳, 雮橂吀 靻岇灛電� 旮绊儉 斓滌波雼� 鞚戩毄攵勳暭鞐愲弰 鞙犾毄 頃� 瓴冹溂搿� 鞓堨儊霅滊嫟.

攴鸽�� 1. 頃橃澊敫岆Μ霌� Co/Zn ZIF-L 氚� Co-N-CNT鞚� 鞝滌“瓿检爼 (靸�). Co / Zn (1 : 1) 頃橃澊敫岆Μ霌� ZIF-L 80 ml 攴滊��鞚� 頃╈劚 (頃橃��). Co/Zn (1:1) 頃橃澊敫岆Μ霌� ZIF-L SEM 鞚措�胳�� (頃橃��). Co-N-CNT 靷�歆� (頃橃毎)

攴鸽��2. 鞝勲�� 鞝勳晻瓿勲�� 鞜�鞚� 霑� 斓滌唽 1.365 V鞚� 鞝勳晻鞚� 雮橅儉雮措姅 鞎勳棸鞐愳柎鞝勳�� 靷�歆� (膦�). 靹� 臧滌潣 鞎勳棸鞐愳柎鞝勳��毳� 歆侂牞 須岆�滊�� 鞐瓣舶頄堨潉 霑� 齑堧�濎儔 攵堨澊 旒滌�� LED (5mm, ~3.2 V) 靷�歆� (欷�). 靹� 臧滌潣 於╈爠靹� 鞎勳棸瓿店赴鞝勳��毳� 歆侂牞 須岆�滊�� 鞐瓣舶頃挫劀 毵岆摛鞏挫�� 韺旍皩毳� 鞚挫毄頃挫劀 LED鞐� 齑堧�濎儔 攵堨澊 旒滌��霃勲�� 頃�(鞖�).

彀戈碃鞛愲��:

Advanced Functional Materials (2018) DOI10 (.1002/adfm.201705048

鞗愲��:

Title: Two-dimensional dual-metal ZIF derived bifunctional air electrodes with ultra-high electrochemical properties for rechargeable zinc-air batteries

In order to find solutions for the increasing concerns of environmental pollution and energy shortages, development of clean energy and effective energy storage are highly demanded and are still major challenges for sciences and society. Zinc-air batteries have been suggested to be a promising energy storage system applicable as a power source for electric vehicles thanks to their high energy density. In the process for energy storage and conversion, the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the critical reactions, in which precious metals such as Pt, Ir, Ru, etc. all have been used as high-active electrocatalysts for ORR and OER, respectively. However, their high cost and poor stability are hampering commercialization of Zn-air batteries.

So the most notable challenge is to develop low-cost, highly active and stable bifunctional electrode material to replace the traditional precious metal catalyst. In this context, the research group led by Prof. Francis Verpoort in collaboration with Dr. Shichun Mu’s group developed two-dimensional dual-metal ZIF derived bifunctional air electrodes with ultra-high electrochemical properties for rechargeable zinc-air batteries.

The pyrolysis of the dual-metal ZIF-L as a single precursor resulted in Co nanoparticles encapsulated into nitrogen-doped carbon nanotubes (Co-N-CNTs) which demonstrated to be the excellent bifunctional air electrodes. It is interesting that after pyrolysis the nitrogen only coexists with cobalt across the tips of the CNTs. Thus, abundant Co-N-C moieties as active sites are fully exposed on the surface of CNTs, which would be beneficial to the enhanced electrocatalytic properties. As a result, the obtained Co-N-CNTs present superior electrocatalytic activity and stability towards ORR and OER over the commercial Pt/C and IrO₂ as well as most reported metal organic frameworks-derived catalysts, respectively. The primary batteries exhibited a high open current potential of 1.365 V, a current density of ~90 mA cm^-2 and a peak power density of ~101 mW cm^-2 as well as good stability (130 cycles for 15 h charge-discharge performance). Furthermore, it is anticipated that our nanomaterial will also be useful for other cutting-edge applications.