Perilla frutescens L. is a traditional medicinal plant in china. In recent years, with more and more attention is paid to the nutritional and health values of Perilla frutescens L, it has become a potential medicinal ...Perilla frutescens L. is a traditional medicinal plant in china. In recent years, with more and more attention is paid to the nutritional and health values of Perilla frutescens L, it has become a potential medicinal and edible crop. Two Per- ilia frutescens cultivars, Qisu No.1 （oil type） and Qisu No.3 （leaf and seed-using type）, bred by Rapeseed Research Institute of Guizhou Academy of Agricultural Sciences, were used as test material for studying the effects of different planting density on the economic yield and agronomic characters of Perilla frutescens L. under moderate fertility level. The results showed the variation tendency of agro- nomic characters with the change of planting density was similar for the two Perilla frutescens cultivars. Among them, the plant height, main-stem nods, first effective branch length, first effective branch height, spikes per plant, and yield per plant were negatively related to the planting density; and main spike length and main- spike grains were positively related to the planting density. The effects of planting density on kilo-grain weight were not significant. The yield of the two cuitivars all increased first and then decreased with the increase of planting density. The re- gression analysis of planting density versus yield of Perilla frutescens L. was per- formed for obtaining the regression equations （Qisu No.l： y=54.046 5＋96.777 lx- 45.719 8x2, r=0.999 4; Qisu No.3：y=38.717 6＋42.111 3x-16.757 7x2, r=0.999 8）. Based on the regression equations, the optimal planting density for Qisu No.1 was 158 745 plants/hm2 with peak yield of 1 578.90 kg/hm2, and for Qisu No.3 was 188 745 plants/hm2 with peak yield of 977.55 kg/hm2. Under the optimal planting density, Qisu No.3 could also harvest 3 000 kg/hm2 of Perilla frutescens dry leaves and 2 400 kg/hm2 of Perilla frutescens stems. This research would provide an important reference for the promotion, high-yield cultivation and comprehensive utilization of Perilla frutescens L.展开更多
Aqueous zinc-based batteries are emerging as highly promising alternatives to commercially successful lithium-ion batteries,particularly for large-scale energy storage in power stations.Phosphate cathodes have garnere...Aqueous zinc-based batteries are emerging as highly promising alternatives to commercially successful lithium-ion batteries,particularly for large-scale energy storage in power stations.Phosphate cathodes have garnered significant research interest owing to their adjustable operation potential,electrochemical stability,high theoretical capacity,and environmental robustness.However,their application is impeded by various challenges,and research progress is hindered by unclear mechanisms.In this review,the various categories of phosphate materials as zinc-based battery cathodes are first summarized according to their structure and their corresponding electrochemical performance.Then,the current advances to reveal the Zn^(2+)storage mechanisms in phosphate cathodes by using advanced characterization techniques are discussed.Finally,some critical perspectives on the characterization techniques used in zinc-based batteries and the application potential of phosphates are provided.This review aims to guide researchers toward advanced characterization technologies that can address key challenges,thereby accelerating the practical application of phosphate cathodes in zinc-based batteries for large-scale energy storage.展开更多
We reconstruct the three-dimensional microstructure of a cathode from a commercial LiCoO2Lithium-ion battery with an adapted simulated annealing approach.The real size distribution curve of LiCoO2particles is applied ...We reconstruct the three-dimensional microstructure of a cathode from a commercial LiCoO2Lithium-ion battery with an adapted simulated annealing approach.The real size distribution curve of LiCoO2particles is applied to regulate the reconstruction process.By discretizing a 40 m 40 m 40 m cathode volume with 8000000 numerical cubes,the cathode involving three individual phases:(1)LiCoO2as active material,(2)pores or electrolyte,and(3)additives(polyvinylidene fluoride+carbon black)is reconstructed.Characterization of the reconstructed cathode gives important structural and transport properties including volume-specific surface area between phases,tortuosity and geometrical connectivity of individual phase.展开更多
基金Supported by National Natural Science Foundation of China(31360067)Guiyang Science and Technology Plan Project(Cultivation Plan of Innovative Talents-Young Science and Technology Talents Training Subsidy)(ZKHT[2012HK]209-36)+1 种基金Agriculture Animal and Plant Breeding Special of Guizhou Province(QNYZ[2013]019)Special Fund of Guizhou Academy of Agricultural Sciences(QKH[2011]017)~~
文摘Perilla frutescens L. is a traditional medicinal plant in china. In recent years, with more and more attention is paid to the nutritional and health values of Perilla frutescens L, it has become a potential medicinal and edible crop. Two Per- ilia frutescens cultivars, Qisu No.1 （oil type） and Qisu No.3 （leaf and seed-using type）, bred by Rapeseed Research Institute of Guizhou Academy of Agricultural Sciences, were used as test material for studying the effects of different planting density on the economic yield and agronomic characters of Perilla frutescens L. under moderate fertility level. The results showed the variation tendency of agro- nomic characters with the change of planting density was similar for the two Perilla frutescens cultivars. Among them, the plant height, main-stem nods, first effective branch length, first effective branch height, spikes per plant, and yield per plant were negatively related to the planting density; and main spike length and main- spike grains were positively related to the planting density. The effects of planting density on kilo-grain weight were not significant. The yield of the two cuitivars all increased first and then decreased with the increase of planting density. The re- gression analysis of planting density versus yield of Perilla frutescens L. was per- formed for obtaining the regression equations （Qisu No.l： y=54.046 5＋96.777 lx- 45.719 8x2, r=0.999 4; Qisu No.3：y=38.717 6＋42.111 3x-16.757 7x2, r=0.999 8）. Based on the regression equations, the optimal planting density for Qisu No.1 was 158 745 plants/hm2 with peak yield of 1 578.90 kg/hm2, and for Qisu No.3 was 188 745 plants/hm2 with peak yield of 977.55 kg/hm2. Under the optimal planting density, Qisu No.3 could also harvest 3 000 kg/hm2 of Perilla frutescens dry leaves and 2 400 kg/hm2 of Perilla frutescens stems. This research would provide an important reference for the promotion, high-yield cultivation and comprehensive utilization of Perilla frutescens L.
基金National Natural Science Foundation of China(No.52270177)Natural Science Foundation of Shenyang(No.22-315-6-13)Fundamental Research Funds for the Central Universities(N2425035).
文摘Aqueous zinc-based batteries are emerging as highly promising alternatives to commercially successful lithium-ion batteries,particularly for large-scale energy storage in power stations.Phosphate cathodes have garnered significant research interest owing to their adjustable operation potential,electrochemical stability,high theoretical capacity,and environmental robustness.However,their application is impeded by various challenges,and research progress is hindered by unclear mechanisms.In this review,the various categories of phosphate materials as zinc-based battery cathodes are first summarized according to their structure and their corresponding electrochemical performance.Then,the current advances to reveal the Zn^(2+)storage mechanisms in phosphate cathodes by using advanced characterization techniques are discussed.Finally,some critical perspectives on the characterization techniques used in zinc-based batteries and the application potential of phosphates are provided.This review aims to guide researchers toward advanced characterization technologies that can address key challenges,thereby accelerating the practical application of phosphate cathodes in zinc-based batteries for large-scale energy storage.
基金supported by the Program of"100 Talents"of Chinese Academy of Sciences and the Amperex Technolgy Limited-Dongguan
文摘We reconstruct the three-dimensional microstructure of a cathode from a commercial LiCoO2Lithium-ion battery with an adapted simulated annealing approach.The real size distribution curve of LiCoO2particles is applied to regulate the reconstruction process.By discretizing a 40 m 40 m 40 m cathode volume with 8000000 numerical cubes,the cathode involving three individual phases:(1)LiCoO2as active material,(2)pores or electrolyte,and(3)additives(polyvinylidene fluoride+carbon black)is reconstructed.Characterization of the reconstructed cathode gives important structural and transport properties including volume-specific surface area between phases,tortuosity and geometrical connectivity of individual phase.
