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典型文献
N,P co-doped porous graphene with high electrochemical properties obtained via the laser induction of cellulose nanofibrils
文献摘要:
Cellulose and its derivatives are natural materials with high carbon contents,but it is challenging to con-vert their carbon into high value-added carbonaceous materials(e.g.,graphene).Here,an approach to convert the carbon in cellulose into N,P co-doped porous graphene(LIG)materials via laser induction is proposed.Cellulose nanofibrils(CNFs),a cellulose derivative with high dispersion uniformity and abun-dant surface hydroxyl groups,were easily formed on a bulk substrate(thickness>5 mm)containing ammonium polyphosphate(APP).Then,a 10.6 um CO2 laser was used to scribe for 1-5 passes on the CNFs/APP substrate under an ambient environment to produce N,P co-doped porous LIG.Upon increas-ing the number of laser scribing passes,the IG/ID of LIG first increased and then decreased,reaching a maximum of 1.68 at 4 passes.The good pore structure and low resistance also showed that 4 laser passes were ideal.Besides,the N,P co-doped LIG also showed excellent electrochemical performance,with a specific capacitance of 221.4 F g·-1 and capacitance retention of 89.9%.This method exploits the advan-tages of nanocellulose and overcomes the difficulties associated with directly compounding cellulosic materials,providing a method for the further development of biomass nanomaterials.
文献关键词:
作者姓名:
Jie Wei;Weiwei Yang;Shuai Jia;Ziqiang Shao
作者机构:
Beijing Engineering Research Center of Cellulose and Its Derivatives,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China
引用格式:
[1]Jie Wei;Weiwei Yang;Shuai Jia;Ziqiang Shao-.N,P co-doped porous graphene with high electrochemical properties obtained via the laser induction of cellulose nanofibrils)[J].中国化学工程学报(英文版),2022(07):31-38
A类:
B类:
doped,porous,graphene,high,electrochemical,properties,obtained,via,laser,induction,nanofibrils,Cellulose,derivatives,are,natural,contents,but,challenging,their,into,value,added,carbonaceous,Here,approach,convert,LIG,proposed,CNFs,dispersion,uniformity,abun,dant,surface,hydroxyl,groups,were,easily,formed,bulk,substrate,thickness,containing,ammonium,polyphosphate,Then,was,used,scribe,passes,under,ambient,environment,produce,Upon,number,scribing,ID,first,increased,then,decreased,reaching,maximum,good,pore,structure,low,resistance,also,showed,that,ideal,Besides,excellent,performance,specific,capacitance,retention,This,method,exploits,advan,tages,nanocellulose,overcomes,difficulties,associated,directly,compounding,cellulosic,providing,further,development,biomass,nanomaterials
AB值:
0.553177
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