Nature Communications
·
2023
·Vol. 14
·期 1
·1-10
·
IF 16.6
Jin Chengbin,Huang Yiyu,Li Lanhang,Wei Guoying,Li Hongyan,Shang Qiyao,Ju Zhijin,Lu Gongxun,Zheng Jiale,Sheng Ouwei,Tao Xinyong
Reactive negative electrodes like lithium (Li) suffer serious chemical and electrochemical corrosion by electrolytes during battery storage and operation, resulting in rapidly deteriorated cyclability and short lifespans of batteries. Li corrosion supposedly relates to the features of solid-electrolyte-interphase (SEI). Herein, we quantitatively monitor the Li corrosion and SEI progression (e.g., dissolution, reformation) in typical electrolytes through devised electrochemical tools and cryo-electron microscopy. The continuous Li corrosion is validated to be positively correlated with SEI dissolution. More importantly, an anti-corrosion and interface-stabilizing artificial passivation layer comprising low-solubility polymer and metal fluoride is designed. Prolonged operations of Li symmetric cells and Li | |LiFePO 4 cells with reduced Li corrosion by ~74% are achieved (0.66 versus 2.5 μAh h −1 ). The success can further be extended to ampere-hour-scale pouch cells. This work uncovers the SEI dissolution and its correlation with Li corrosion, enabling the durable operation of Li metal batteries by reducing the Li loss.
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Nature Communications
·
2021
·Vol. 12
·期 1
·1-9
·
IF 14.919
Cheng Erjian,Xia Wei,Shi Xianbiao,Fang Hongwei,Wang Chengwei,Xi Chuanying,Xu Shaowen,Peets Darren C.,Wang Linshu,Su Hao,Pi Li,Ren Wei,Wang Xia,Yu Na,Chen Yulin,Zhao Weiwei,Liu Zhongkai,Guo Yanfeng,Li Shiyan
The nature of the interaction between magnetism and topology in magnetic topological semimetals remains mysterious, but may be expected to lead to a variety of novel physics. We systematically studied the magnetic semimetal EuAs 3 , demonstrating a magnetism-induced topological transition from a topological nodal-line semimetal in the paramagnetic or the spin-polarized state to a topological massive Dirac metal in the antiferromagnetic ground state at low temperature. The topological nature in the antiferromagnetic state and the spin-polarized state has been verified by electrical transport measurements. An unsaturated and extremely large magnetoresistance of ~2 × 10 5 % at 1.8 K and 28.3 T is observed. In the paramagnetic states, the topological nodal-line structure at the Y point is proven by angle-resolved photoemission spectroscopy. Moreover, a temperature-induced Lifshitz transition accompanied by the emergence of a new band below 3 K is revealed. These results indicate that magnetic EuAs 3 provides a rich platform to explore exotic physics arising from the interaction of magnetism with topology.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Zhang Xin,Bai Ruichen,Fu Yuhao,Hao Yingying,Peng Xinkai,Wang Jia,Ge Bangzhi,Liu Jianxi,Hu Yongcai,Ouyang Xiaoping,Jie Wanqi,Xu Yadong
α particles must be monitored to be managed as radioactive diagnostic agents or nuclear activity indicators. The new generation of perovskite detectors suffer from limited energy resolution, which affects spectroscopy and imaging applications. Here, we report that the solution-grown CsPbBr 3 crystal exhibits a low and stable dark current (34.6 nA·cm −2 at 200 V) by thinning the as-grown crystal to decrease the high concentration CsPb 2 Br 5 phase near the surface. The introduction of the Schottky electrode for the CsPbBr 3 detector further reduces the dark current and improves the high-temperature stability. An energy resolution of 6.9% is achieved with the commercial electronic system, while the effects of air scattering and absorption are investigated. Moreover, 1.1% energy resolution is recognized by a full-customized readout application-specific integrated circuit without any additional signal processing, which matches well with the given parameters of the CsPbBr 3 detector by reducing the parasitic capacitance and electronic noise.
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Nature Communications
·
2019
·Vol. 10
·期 1
·1-9
·
IF 11.878
Ren Guang-Kun,Wang Shanyu,Zhou Zhifang,Li Xin,Yang Jiong,Zhang Wenqing,Lin Yuan-Hua,Yang Jihui,Nan Ce-Wen
BiCuSeO oxyselenides are promising thermoelectric materials, yet further thermoelectric figure of merit ZT improvement is largely limited by the inferior electrical transport properties. The established literature on these materials shows only one power factor maximum upon carrier concentration optimization, which is typical for most thermoelectric semiconductors. Surprisingly, we found three power factor maxima when doping Bi with Pb. Based on our first-principles calculations, numerical modeling, and experimental investigation, we attribute the three maxima to the Fermi energy optimization, band convergence, and compositing effect due to in situ formed PbSe precipitates. Consequently, three ZT peaks of 0.9, 1.1, and 1.3 at 873 K are achieved for 4, 10, and 14 at.% Pb-doped samples, respectively, revealing the significance of complex electronic structure and multiple roles of Pb in BiCuSeO. The results establish an accurate band structure characterization for BiCuSeO and identify the role of band convergence and nanoprecipitation as the driving mechanism for high ZT.
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-9
·
IF 16.6
Xing Xiangzhuo,Wang Chao,Yu Linchao,Xu Jie,Zhang Chutong,Zhang Mengge,Huang Song,Zhang Xiaoran,Liu Yunxian,Yang Bingchao,Chen Xin,Zhang Yongsheng,Guo Jiangang,Shi Zhixiang,Ma Yanming,Chen Changfeng,Liu Xiaobing
The recent report of near-ambient superconductivity and associated color changes in pressurized nitrogen doped lutetium hydride has triggered worldwide interest and raised major questions about the nature and underlying physics of these latest claims. Here we report synthesis and characterization of high-purity nitrogen doped lutetium hydride LuH 2± x N y . We find that pressure conditions have notable effects on Lu-N and Lu-NH chemical bonding and the color changes likely stem from pressure-induced electron redistribution of nitrogen/vacancies and interaction with the LuH 2 framework. No superconducting transition is found in all the phases at temperatures 1.8-300 K and pressures 0-38 GPa. Instead, we identify a notable temperature-induced resistance anomaly of electronic origin in LuH 2± x N y , which is most pronounced in the pink phase and may have been erroneously interpreted as a sign of superconducting transition. This work establishes key benchmarks for nitrogen doped lutetium hydrides, allowing an in-depth understanding of its novel pressure-induced phase changes.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 17
·25952-25963
·
IF 0
Di Hongcheng,Jiang Zhuwu,Sun Fengyi,Yang Jiahan,Cheng Wei,Lu Jiahui,Zhang Hongyu,Bai Xue
Nitrogen-containing disinfection by-products (N-DBPs) produced in the process of drinking water disinfection are widely concerning due to the high cytotoxicity and genotoxicity. It is due to the difficulty of natural degradation of N-DBPs in water and the fact that conventional treatment systems do not effectively treat N-DBPs in drinking water. In this study, N-nitrosopyrrolidine (NPYR) in water was electrocatalytically degraded by a three-dimensional electrode reactor (3DER). This system applied graphite plates as anode and cathode. The granular activated carbon (GAC) was used as third electrode. The degradation of NPYR using a continuous flow three-dimensional electrode reactor was investigated by examining the effects of flow rate, current density, electrolyte concentration, and pollutant concentration on the degradation efficiency, energy consumption, and reaction kinetics of GAC particle electrodes. The results showed that the optimal operating conditions were flow rate = 0.45 mL/min, current density = 6 mA/cm 2 , Na 2 SO 4 concentration = 0.28 mol/L, and NPYR concentration = 20 mg/L. Under optimal conditions, the degradation of NPYR exceeded 58.84%. The main contributor of indirect oxidation was deduced from free radical quenching experiments. NPYR concentration was measured by GC–MS with DB-5 capillary column, operating in full scan monitoring mode for appropriate quantification of NPYR and intermediates. Based on the identification of reaction intermediates, a possible pathway for the electrochemical oxidation of NPYR on GAC particle electrodes was proposed.
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PubMed
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 31
·期 4
·6511-6526
·
IF 5.8
Huang Likun,Wang Huixian,Wang Guangzhi,Mu Deying,Hou Yue,Di Xinyi,Zhou Simin,Wang Dongdong,Wang Dandan
The degradation of cellulosic ethanol wastewater by peroxymonosulfate (PMS) is one of the important methods to solve the environmental problems caused by it. In order to improve the degradation efficiency of cellulosic ethanol wastewater, the design of more catalytically active and stable chalcogenide catalysts has become a problem that needs to be solved nowadays. The application of foreign cations to replace the A- or B-site to increase the oxygen vacancy of the chalcocite catalyst to improve the efficiency of chalcocite catalytic degradation of wastewater has received much attention. In this work, the perovskite material LaCuO 3 was synthesized using a citric acid-sol–gel method, and the novel material La 1-x Sr x CuO 3 was prepared by doping of Sr element at the A position. In order to prepare catalytic materials with better performance, this study carried out performance-optimized degradation experiments on the prepared materials and determined that the catalytic efficiency of La 0.5 Sr 0.5 CuO 3 prepared under the conditions of the complexing agent dosage of 1:2, the gel temperature of 80 °C, and the calcination temperature of 700 °C was better than that of the catalytic materials prepared under other conditions. The prepared material has good recycling function; after four times recycling, the removal rate of pollutant COD is still more than 85%. This work provides a new synthesis method of perovskite material with good recycling function and high catalytic efficiency for the degradation technology of cellulosic ethanol wastewater. Graphical Abstract
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Advanced Fiber Materials
·
2023
·Vol. 6
·期 2
·367-386
·
IF 16.1
He Guifang,Ning Fanggang,Liu Xiang,Meng Yaxin,Lei Zhiwei,Ma Xianda,Tian Mingwei,Liu Xuqing,Zhang Xiansheng,Zhang Xueji,Qu Lijun
High-performance wearable electronics are highly desirable for the development of body warming and human health monitoring devices. In the present study, high electrically conductive and photothermal cotton yarns (CYs) with long-term stability were prepared as wearable electronics. The process contains back-to-back decoration of the fiber surface by Ti 3 C 2 T x (MXene) nanosheets, and the poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) composite, to form a core–shell structure (MP@CY). The addition of a small amount of PEDOT: PSS plays a dual role of protecting the MXene from oxidation and increasing the electrical conductivity. The resulting yarn exhibits excellent electrical conductivity (21.8 Ω cm −1 ), rapid electrothermal response, and superb photothermal conversion capability, supporting its application as an optical/electrical dual-drive heater. A three-dimensional (3D) honeycomb-like textile wearable heater based on MP@CY as weft yarn demonstrates outstanding electrical thermal properties (0–2.5 V, 30–196.8 °C) and exceptional photothermal conversion (130 mW cm −2 , 64.2 °C). Using an Internet of Things (IoT) microcontroller and Espressif (ESP) electronics chip, which are combined with wireless fidelity (Wi-Fi) and smartphone, real-time visualization and precise control of the temperature interface can be achieved. Furthermore, MP@CY-based knitted sensors, obtained by hand-knitting, are utilized for monitoring human movement and health, exhibiting high sensitivity and long-term cycling stability. Graphical Abstract
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Scientific Reports
·
2024
·Vol. 14
·期 1
·1-11
·
IF 3.8
Zheng Hailing,Yang Ruling,Guo Jianbo,Xie Zhenbin,Liu Jingxuan,Yang Hailiang,Jia Liling,Yu Jian,Cai Qiutong,Tang Fei,Zhou Yang
Silk was the driving force behind the opening of the Silk Road, positioning this material as a global commodity that greatly influenced the progress of human civilization. Due to the natural protein properties of silk, the internal structure and external characteristics of silk cultural relics are irreversibly destroyed during the process of burial or when passed down through the generations until the production information and material components completely disappear, making it difficult to obtain direct archaeological evidence for pinpointing the origin of silk. The sacrificial pits at the Sanxingdui archaeologcal site, located in Guanghan, Sichuan, China, have been found with layers of ash above the layers of artifacts and some bronzes with fabric traces. Among the artifacts, one grid-like ware artifact first appeared in the Bronze Age in China. The two sides of the grid-like ware were grid-like ovals made of bronze material, and inside, there was an oval-shaped complete piece of jade with a bent back. Fabric traces were found on both the jade and bronze surfaces. In order to determine the specific function of fabric at this site, the developed silk fibroin immunoaffinity column (IAC) enrichment technique combined with enzyme-linked immunosorbent assay (ELISA), morphology observation and proteomics were used to identify mineralized fabric material and fabric residues in the ash layer. Silk residues were successfully detected, which confirmed the early use of silk as a material carrier to communicate between Heaven and Earth and provided archaeological evidence for the cultural origins of silk.
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PubMed
高影响因子
POLYMER JOURNAL
·
2018
·Vol. 50
·期 7
·485-493
·
IF 2.17
Lan Jun,Ni Xiuquan,Zhao Chuanzhuang,Liu Qiao,Chen Chongyi
In this work, a versatile and simple strategy for building self-healing hydrogels with tunable mechanical properties and shape memory behavior is reported. A commercially available small molecule with three amino groups, diethylenetriamine (DETA), is applied to crosslink poly (acrylic acid) (PAAc) chains via ionic bonding, and the complexes of the PAAc chains with DETA form hydrophobic microdomains in the hydrogel network. The cooperation of ionic bonding and hydrophobic interactions drastically improves the mechanical properties, which can be modulated by adjusting the molar ratio of PAAc to DETA. Due to the physical interaction of the crosslinks, the hydrogels can self-heal rapidly in ambient conditions. The thermal responsiveness of the physical microdomain crosslinks endow the hydrogels with shape memory behavior. It is hoped that this novel strategy will provide new opportunities for the design of high-strength hydrogels with variable functionalities for a wide range of applications, such as artificial muscle and skin.
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2024
·Vol. 55
·期 6
·4775-4786
·
IF 2.4
Luo Shuxuan,Ma Xingyue,Wang Wanlin,Zhang Lei,Sun Yongqi
The rapid advancement in stainless steel manufacturing has resulted in the substantial accumulation of stainless steel slags. In those slags, a significant proportion of trivalent chromium is susceptible to oxidation, forming highly toxic hexavalent chromium, particularly under oxidizing atmosphere. Therefore, prior to landfilling or resource recycling, specialized modification of phase transitions is essential. This study is based on the strategy of converting chromium into spinel structure to achieve detoxification. Initially, the thermodynamic calculations were conducted to analyze the formation and transformation behaviors of spinels in an alkaline environment, with particular emphasis on changes in the valence states of manganese. The synthesis and investigation of typical Mg 1− x Mn x Cr 2 O 4 spinels commonly encountered in stainless steel slags treatment process were subsequently conducted. Through various characterization techniques and leaching tests, it was found that the stability of Mn 2+ incorporated MgCr 2 O 4 was diminished. However, with an increase in MnO content from 5 to 20 pct (in mole), the stability of Mg 1− x Mn x Cr 2 O 4 spinels showed an upward trend, though remaining lower than that of pure MgCr 2 O 4 . The subsequent introduction of CaO for high-temperature calcination revealed that the disruption of tetrahedral sites in the spinels primarily originates from Mn 2+ , whereas Mg 2+ exhibited a greater stability in occupying tetrahedral sites. A comprehensive understanding of the properties of Mg 1− x Mn x Cr 2 O 4 spinels could contribute to the target modification and application of stainless steel slags.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Wang Hengjia,Qin Ying,Wu Yu,Qiu Yiwei,Ling Ling,Fang Qie,Wang Canglong,Hu Liuyong,Gu Wenling,Zhu Chengzhou
Hydrogen adsorption and desorption in single-phase catalysts often occur at a single catalytic site based on the traditional hydrogen evolution reaction (HER) pathway, which makes it difficult to break the limitation entailed by the Sabatier principle. Herein, β-Pd hydride metallene (β-PdHene) aerogels are synthesized as advanced HER catalysts. A lattice hydrogen-involved mechanism is reported to separate adsorption and desorption sites, which is thermodynamically favorable compared to the traditional reaction pathway. In situ differential electrochemical mass spectrometry and theoretical calculations reveal that lattice hydrogen as additional active sites directly participate in the HER process. Consequently, β-PdHene aerogels exhibit a low overpotential of only 20 mV at 10 mA cm −2 and remarkable HER stability, which are even comparable to commercial Pt/C. Our work opens an avenue to rationally develop highly active HER catalysts, bypassing the design limitations of catalysts under traditional mechanisms.
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