Since the discovery of graphene, interest in 2D … The formation of covalent bonds with graphitic carbon restrains edge reconstruction in layered BP particles to ensure open edges for fast Li+entry; the coating For context, an anode material that can charge at 13 A/g with a reversible capacity of 440 mA.hour/g implies that an advanced lithium-ion battery made with this technology could be charged in less than 10 minutes. Black phosphorus, which is a relatively rare allotrope of phosphorus, was first discovered by Bridgman in 1914. Black phosphorus (BP), an allotrope of phosphorus with orthorhombic structure has recently emerged, after having been known for over 100 years, as one of the next generation 2D materials with layered structure. “A typical trade-off lies in the storage capacity and rate capability of the electrode material,” co-team leader Hengxing Ji tells Physics World. An electrode made of the new black phosphorus composite can recover about 80 percent of its power after a nine-minute charge, and 90 percent charge capacity can be maintained after charging 2,000 times, said Xin Sen, one of the paper's authors and researcher at … On its own, black phosphorus isn't a great material for batteries, but a Chinese-US team has figured out how to manipulate it so it works much better. They found that their test devices had reversible capacities of 910 mA.hour/g, 790 mA.hour/g and 440 mA.hour/g after more than 2000 cycles at 2.6 A/g, 5.2 A/g and 13 A/g, respectively. For context, an anode material that can charge at 13 A/g with a reversible capacity of 440 mA.hour/g implies that an advanced lithium-ion battery made with this technology could be charged in less than 10 minutes. The black phosphorus composite material connected by carbon-phosphorus covalent bonds has a more stable structure and a higher lithium ion storage capacity. This deformation, which begins at the edges of the black phosphorus layers, reduces the material’s quality to such an extent that lithium ions cannot easily transfer through it. Researchers led by Ji at USTC and Xiangfeng Duan at the University of California, Los Angeles, made their new anode material by combining graphite with black phosphorus. “If scalable production can be achieved, this material may provide an alternative, updated graphite anode, and move us toward a lithium-ion battery with an energy density of higher than 350 watts-hour per kilogram,” says Sen Xin, a researcher at the Institute of Chemistry, Chinese Academy of Sciences, and one of the study’s co-first authors.This figure, he adds, means that an electric vehicle equipped with such a battery could travel 600 miles on a single charge – making it competitive with conventional combustion-engine vehicles. The anode in most lithium-ion batteries is made of graphite. Black phosphorus (BP) is a desirable anode material for alkali metal ion storage owing to its high electronic/ionic conductivity and theoretical capacity. Researchers led by Ji at USTC and Xiangfeng Duan at the University of California, Los Angeles, made their new anode material by combining graphite with black phosphorus. Black phosphorus is the thermodynamically stable form of phosphorus at room temperature and pressure, with a heat of formation of -39.3 kJ/mol (relative to white phosphorus which is defined as the standard state). New black phosphorus anode material. Many phosphorus-carbon composite anodes like red phosphorus-carbon black , , red phosphorus-graphite , red phosphorus-carbon nanotube , red phosphorus-graphene , black phosphorus-carbon black , black phosphorus-ketjenblack , black phosphorus-graphite , are synthesized through high energy ball milling (Fig. Researchers from China, Taiwan and the US report developing a 2D black phosphorus composite anode that supports a high charging rate without sacrificing capacity and cycling stability. This deformation, which begins at the edges of the black phosphorus layers, reduces the material’s quality to such an extent that lithium ions cannot easily transfer through it. “For example, anode materials with high lithium storage capacity, such as silicon, are usually reported as having low lithium-ion conductivity, which hinders fast battery [charging]. Researchers led by Ji at USTC and Xiangfeng Duan at the University of California, Los Angeles, made their new anode material by combining graphite with black phosphorus. The anode in most lithium-ion batteries is made of graphite. Comparison on the different preparation methods and processes, characteristics, and applications of few-layer BP is presented. The anode in most lithium-ion batteries is made of graphite. A new electrode material could make it possible to construct lithium-ion batteries with a high charging rate and storage capacity. The Mechanism of Lithium/Sodium Storage. By way of comparison, the Tesla Model S can travel 400 miles on one charge. Their paper is published in the journal Science. One reason for the shortfall is that the material’s structure deforms during battery operation. Black phosphorus obtained from white phosphorus at 4 GPa and 400 °C exhibited the highest first discharge and charge capacities of 2,505 and 1,354 mAh g-1.Black phosphorus obtained from red phosphorus at 4.5 GPa and 800 °C exhibited the highest first discharge and charge capacities of 2,649 and 1,425 mAh g-1.. Black phosphorus (BP) has received wide attention due to its high theoretical capacity (2596 mAh g −1) and good electron mobility, but its cyclic stability is poor.Meanwhile, it can be complementary to carbon material, which has low theoretical capacity but good cycle stability. The study revealed the electrochemical activity of pure black P under different pressures and temperatures systematically. However, its practical application is hindered by large volume change of BP and poor mechanical stability of BP anodes by traditional slurry casting technology. Credit: DONG Yihan, SHI Qianhui and LIANG Yan A new electrode material could make it possible to construct lithium-ion batteries with a high charging rate and storage capacity. A battery’s performance thus depends largely on the materials used in the electrodes and electrolyte, which need to be able to store and transfer many lithium ions in a short period – all while remaining electrochemically stable – so they can be recharged hundreds of times. By combining black phosphorous with graphite, Ji, Duan and colleagues showed that the chemical bonds between the two materials stabilize the edge structure and prevent unwanted edge changes. This paper reviews the recent progress on electronic and optoelectronic devices based on 2D black phosphorus (BP). It has strong luminescence and electrical conductivity that is faster than silicon. Engineered electrode material moves battery development closer to fast charging by University of Science and Technology of China The black phosphorous composite â ¦ Black phosphorus, which is a relatively rare allotrope of phosphorus, was first discovered by Bridgman in 1914. Building 114 | Mail Code: 722710 The new research was published in the Journal Science. The researchers tested the charging-cycle performance of their new electrode material by preparing sample electrodes using a method that is compatible with industrial fabrication processes. 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Maximizing the performance of all these materials at the same time is a longstanding goal of battery research, yet in practice, improvements in one usually comes at the expense of the others. BP and RP can construct a new single elemental heterostructure. Towards higher energy density and fast chargingThe researchers tested the charging-cycle performance of their new electrode material by preparing sample electrodes using a method that is compatible with industrial fabrication processes. Red phosphorus and black phosphorus anodes have very similar lithiation/sodiation reaction mechanism, both of which can form Li 3 P/Na 3 P in a fully discharged state, thus having a high theoretical specific capacity of 2596 mAh/g [59,60,61].Unlike lithiation in red phosphorus, which only involves a one-step synthesis reaction, black phosphorus … This 2D layered material had been considered before as a candidate for anodes, but tests showed that its electrochemical performance was far below its theoretical potential. Ball milling method is simple and productive, and can control the ratio of … Publishing fundamental and applied research of the highest quality covering all aspects of graphene and related two-dimensional materials. Please enter the e-mail address you used to register to reset your password, Thank you for registering with Physics World Electronic/Ionic conductivity and theoretical capacity of IOP publishing 's mission to communicate world-class research and to... 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