期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Reduction Kinetics of Nickel Sulphide
1
作者 刘中华 刘纯鹏 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1991年第1期25-28,共4页
Reduction kinetics of Ni_3S_2 was experimen- tally studied by following the time required for completion of the hydrogen reduction reaction in the presence of calcium oxide.A simple empirical integration equation,deri... Reduction kinetics of Ni_3S_2 was experimen- tally studied by following the time required for completion of the hydrogen reduction reaction in the presence of calcium oxide.A simple empirical integration equation,derived for describing the ef- fect of CaO/S molar ratio,temperature,hydrogen concentration and the average diameter of Ni_3S_2 grains,may be shown as following: t|_(X=1)=2.317×10^(-6)d_(Ni_3S_2) C_(H_2)^(-1) β^(-2.29)e^(13710/T),min The reduction reaction is of first order with respect to hydrogen concentration,and the apparent reac- tion activation energy is 114.0 kJ/mol.A great ma- jority of metallic Ni reduced from Ni_3S_2 is distrib- uted in the products evenly. 展开更多
关键词 KINETICS nickel sulphide REDUCTION
下载PDF
High-performance aqueous asymmetric supercapacitors based on the cathode of one-step electrodeposited cracked bark-shaped nickel manganese sulfides on activated carbon cloth 被引量:2
2
作者 ADIL Emin XIE WenLu +7 位作者 LONG Xiao WANG Xiao SONG XiaoQiang CHEN Yue FU YuJun LI JunShuai LI YaLi HE DeYan 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2022年第2期293-301,共9页
In this work,we report a high-performance self-standing supercapacitor electrode of mixed nickel manganese sulfides (NMSs)with a cracked-bark shape grown by one-step electrochemical deposition on activated carbon clot... In this work,we report a high-performance self-standing supercapacitor electrode of mixed nickel manganese sulfides (NMSs)with a cracked-bark shape grown by one-step electrochemical deposition on activated carbon cloth (ACC).The electrode possesses outstanding electrochemical properties,including a high specific capacitance of up to 3142.8 F g^(-1)at 1.0 A g^(-1),the high-rate performance (~1206.8 F g^(-1)at 60.0 A g^(-1)),and cycle stability (~92.3%capacitance retention after 8000 cycles at8 A g^(-1)).An asymmetric supercapacitor assembled using NMSs on ACC as the cathode,activated carbon on carbon cloth as the anode and 1.0 mol L;KOH as the electrolyte delivers a high energy density of 111.2 W h kg^(-1)at 800.0 W kg^(-1)and the prominent cycling performance of~93.2%capacitance retention after 10000 cycles at 5 A g^(-1)with the Columbic efficiency of around 100%during these 10000 cycles.The high performance and facile preparation indicate that the NMSs on ACC hold a huge potential as the electrode for supercapacitors. 展开更多
关键词 aqueous asymmetric supercapacitors nickel manganese sulphides high specific capacitance high energy density long cycle stability
原文传递
Waste cotton fabric derived porous carbon containing Fe_(3)O_(4)/NiS nanoparticles for electrocatalytic oxygen evolution 被引量:1
3
作者 Shan Jiang Hao Shao +5 位作者 Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2020年第24期92-99,共8页
Developing low-cost,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air battery.Herein,this work reports the ... Developing low-cost,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air battery.Herein,this work reports the fabrication of a metal and hetero atom co-doped fibrous carbon structure derived from cotton textile wastes and its use as an efficient OER catalyst.The free-standing fibrous carbon structure,fabricated with a simple two-step carbonization process,has a high specific surface area of 1796 m^2/g and a uniform distribution of Fe_(3)O_(4)/NiS nanoparticles(Fe_(3)O_(4)/NiS@CC).The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 mV at the current density of 10 mA/cm^2in a 1.0 M KOH solution,which even surpass commercial Ru O_(2)catalyst.Additionally,this ternary catalyst shows remarkable long-term stability without current density loss after continuous operation for 26 h.It can be believed that the outstanding OER performance is attributed to the synergistic effect between the iron oxides and nickel sulphides,as well as the micro-meso porous carbon structure.This study demonstrates a new strategy to use conventional textile materials to prepare highly efficient electrocatalysts;it also provides a simple approach to turn textile waste into valuable products. 展开更多
关键词 Waste cotton Porous carbon OER electrocatalyst Iron oxides nickel sulphides
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部