【摘 要】
：
The large-scale application of sodium ion batteries(SIBs)is limited by economic and environmental fac-tors.Here,we prepare multi-heteroatom self-doped hierarchi
【机 构】
：
MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions,School of Chemis
论文部分内容阅读
The large-scale application of sodium ion batteries(SIBs)is limited by economic and environmental fac-tors.Here,we prepare multi-heteroatom self-doped hierarchical porous carbon(HHPC)with a honeycomb-like structure by one-step carbonization method using high-yield and low-cost biomass silk-worm excrement as a precursor.As an anode for SIB,HHPC-1100 exhibits a capacity of 331.7 mA h g-1 at 20 mA g-1,while it also reveals remarkable rate performance and stable long cycle capability due to its abundant pore structure and proper amount of hetero atom doping.Moreover,the synergistic effect of O,N,S,P co-doping in carbon materials on sodium ion adsorption is verified by the first-principles study,which provide a theoretical basis for the prominent electrochemical performance of the material.
其他文献
The exploitation of proper electron transport layers (ETLs) and interface optimization can play a pivotal role to promote the performance of organic solar cells
Lithium(Li) metal,possessing ultrahigh theoretical capacity and the lowest electrode potential,is regarded as a promising new generation anode material.However,the uncontrollable growth of Li dendrites during cycling process gives rise to problems as capa
在常压、580~640℃、丙烷体积空速500~2000 h-1条件下,采用自主开发的新型非贵金属催化剂(活性组分为Zr-Ga-W-Co-Fe-Zn,载体为MgO-Al2O3复合物),在微型固定床反应器中考察了其催化丙烷脱氢的性能,并建立了相应的宏观动力学模型。采用多元非线性回归得到了模型参数,其中脱氢表观活化能为153.42 kJ/mol。经计算可知,总反应速率的拟合值与实验值的平均相对误差为3.14%。经相关系数R2和F方差分析表明,所建
The microstructures of precursors strongly affect the electrochemical performance of Ni-rich layerstructured cathode materials.In this study,the growth behaviou
Developing lower-cost and higher-effective catalyst to support hydrogen(H2)production by electrochemical water-splitting has been recognized as a preferred strategy to drive the clean energy utilization.As a credible technology for the synthesi
Carbon-based microassemblies (CMs) have attracted significant attention in numerous applications due to their unique hierarchical structures and delicate buildi
Although one-dimensional Pt nanocrystals have long been regarded as ideal electrode catalysts for fuel cells,the synthetic techniques commonly involve the use of various complicated templates or surfactants,which have largely hampered their large-scale in
Molybdenum oxide/sulfide materials are extensively evaluated as high-capacity anode candidates for lithium ion batteries.However,they suffer from rapid capacity
Lithium-sulfur batteries(LSBs)are being recognized as potential successor to ubiquitous LIBs in daily life due to their higher theoretical energy density and lo
多级孔分子筛因具有良好的水热稳定性、较大的孔体积和短的扩散距离而倍受关注.以L-赖氨酸为介孔造孔剂,采用低、高温两步晶化法可制备多级孔结构的TS-1分子筛,该方法首先通