ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Huachao Tao,Shaolin Du,Fei Zhang,Lingyun Xiong,Yaqiong Zhang,Hui Ma,Xuelin Yang
Carbon materials with high initial Coulombic efficiency (ICE) and specific capacity in lithium-ion batteries are highly attractive. Herein, P-doped carbon has been prepared, and as an anode for lithium-ion batteries, it exhibits remarkably improved ICE and reversible capacity. P atoms are apt for the formation of the P–O bond in carbon with oxygen-containing groups. The doped P content strongly depends on the O content in carbon. The high-doped P content of 5.79 at. % can be obtained through changing the O content in carbon. Carbon with high contents of P and O displays high ICE and capacity as an anode for lithium-ion batteries. The P–O bond in carbon changes the morphology and composition of the solid electrolyte interface (SEI) layer and is beneficial to the formation of a thin and dense SEI layer. The P–O bond in carbon prevents the permeation and decomposition of solvated PF6– in the interior of the electrode during cycling, resulting in the improved ICE, reversible capacity, and rate capability. As an anode for lithium-ion batteries, the ICE can be improved to 70.9% for carbon with the P–O bond from 36.9% for carbon without the P–O bond. Carbon with the P–O bond displays high specific capacities of 566 mA h g–1 after 100 cycles at 0.1 A g–1 and 432 mA h g–1 after 1000 cycles at 1 A g–1. This design offers a simple and efficient method to improve the ICE and reversible capacity of hard carbon.
研究领域:
材料科学
·
储能
·
电化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Ping Li,Runze Dong,Ruochen Wang,Tianqi Shao,Fei Yan,Pan Zhang,Dong Fu,Rujie Wang
In view of high catalytic activity and oxygen vacancy concentration, Ruddlesden–Popper (R-P) structure oxide has been widely used as the electrode material for solid oxide fuel cells (SOFCs). Herein, three R-P structure oxides, Pr2–xSrxNi0.2Mn0.8O4 (x = 1, 1.2, and 1.5), are used as the semiconductor materials of single-component cells. The materials for the oxygen side are hybrid oxides consisting of R-P structure oxide and perovskite oxide. The hydrogen side was exposed to the reduction atmosphere before the test, and the perovskite structure disappeared and the lattice parameters of the R-P structure changed, resulting in the formation of a new R-P structure and MnO2 or NiMn alloy. In addition, Pr0.5Sr1.5Ni0.2Mn0.8O4 and reduced Pr0.5Sr1.5Ni0.2Mn0.8O4 exhibit the most content of oxygen vacancy. For a single-component fuel cell (SCFC), the cell performance increased with the decrease in Pr content. The SCFC composed of Pr0.5Sr1.5Ni0.2Mn0.8O4 shows the highest maximum power densities (Pmax), which reached 206.6 mW cm–2 at 700 °C. It is because the reduced Pr0.5Sr1.5Ni0.2Mn0.8O4 has the highest catalytic activity for hydrogen oxidation reaction (HOR). Furthermore, the Pmax at 700 °C can reach a value of 198.1 mW cm–2 in SOFC mode, and in the case of SOEC mode, the current density at 700 °C is as high as −390.8 mA cm–2 with an applied electrolysis voltage of 1.3 V for the reversible single-component cell (RSCC) with Pr0.5Sr1.5Ni0.2Mn0.8O4 as the semiconducting electrocatalyst.
研究领域:
材料科学
·
能源工程
·
电化学
·
燃料电池
✓ 已验证
DOI
高影响因子
MATERIALS LETTERS
·
2014
·
IF 2.269
Sujian You,Chang Liu,Huiqing Liu,Xiaolei Yu,Shasha Li,Wei Liu,Shishang Guo,Xingzhong Zhao
In this work, one-dimensional (1D) multiferroic BiFeO 3 (BFO) and poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] composite nanofibers are fabricated by using a two-step sol–gel based electrospinning method . X-ray diffraction (XRD) study reveals that crystalline phases corresponding to both BiFeO 3 and P(VDF-TrFE) are found. Microstructure measurement shows that the nanofibers are alignment and BFO nanorods are well-dispersed in the P(VDF-TrFE) fiber matrix. The coexistence of electric and magnetic hysteresis for the composite materials also has been observed successfully at room temperature. It indicates that such nanofibers would perform a wide range of potential applications in flexibility information storage, magnetic recording media , spintronics devices and sensors.
研究领域:
材料科学
·
纳米技术
·
多铁性材料
·
聚合物复合材料
·
自旋电子学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 42
·13314-13320
·
IF 0
Sen Liu,Bo Yu,Tong Zhang
In this work, reduced graphene oxide–poly(p-phenylenediamine) (rGO–PpPD) hybrids have been successfully prepared through a facile and effective method by heat treatment of GO aqueous dispersion in the presence of pPD at 80 °C for 2 h. The combined characterization by scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS) indicates the successful production of rGO–PpPD hybrids with a crumpled morphology. The formation of rGO–PpPD hybrids is attributed to the redox reactions between GO and pPD, where the reduction of GO to rGO and polymerization of pPD into PpPD occurred simultaneously. It was found that rGO–PpPD hybrids show good catalytic activity toward oxidation of dopamine (DA), and no response to ascorbic acid (AA) and uric acid (UA), leading to a high-performance DA sensor. The linear detection ranges are estimated to be from 5 μM to 25 μM (r = 0.998) and 50 μM to 200 μM (r = 0.995), respectively. The detection limit is estimated to be 0.36 μM at a signal-to-noise ratio of 3.
研究领域:
材料科学
·
纳米技术
·
电分析化学
·
传感器与生物传感器
✓ 已验证
DOI
Journal of Materials Chemistry C
·
2015
·Vol. 4
·期 4
·857-862
·
IF 4.696
Xiwei Zhang,Jiansheng Jie,Xiujuan Zhang,Fengjun Yu
Au catalysts have been found to diffuse into semiconductor nanostructures and form non-radiative recombination centers during the synthesis process. This adverse impact is even more on the p-type doping of ZnSe nanostructures due to the self-compensation effect. Herein, low melt-point Bi was used as a catalyst for the synthesis of p-ZnSe nanowires via the VLS mechanism while the incorporation of Bi catalyst atoms causes effective p-type doping in the as-grown nanostructures. Top-gate MISFETs were fabricated to confirm the p-type conduction of Bi-catalyzed and doped ZnSeNWs. Temperature-dependent electrical measurements were used for understanding the charge transport mechanism and the doping effect of semiconductors. The thermal activation behavior of carriers is considered to dominate in the temperature range of 150–300 K while the 3D Mott VRH mechanism is considered to prevail over other mechanisms in the lower temperature range of 50–140 K.
研究领域:
纳米材料
·
半导体物理
·
电子输运
·
纳米电子学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2018
·
IF 3.886
Lihong Yu,Feng Lin,Lin Xu,Jingyu Xi
A phosphorous-doped graphite felt (PGF) is fabricated and examined as electrode for vanadium flow battery (VFB). P doping improves the electrolyte wettability of GF and induces more defect sites on its surface, resulting in significantly enhanced activity and reversibility towards VO 2+ /VO 2 + and V 2+ /V 3+ couples. VFB with PGF electrode demonstrates outstanding performance such as high-rate capability under 50–400 mA cm −2 , wide-temperature tolerance at −20 °C–60 °C, and excellent durability over 1000 charge–discharge cycles. These merits enable PGF a promising electrode for the next-generation VFB, which can operate at high-power and all-climate conditions.
研究领域:
能源化学
·
材料科学
·
电化学
·
储能技术
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2012
·Vol. 14
·期 23
·7942-7950
·
IF 3.842
Heng Zhang,Yi Lu,Chang-Dong Gu,Xiu-Li Wang,Jiang-Ping Tu
A new strategy for synthesizing Ni–P alloy nanoparticles with a core-shell structure is proposed, which involves a facile ionothermal process in a deep eutectic solvent (DES). The architecture of the core-shell structured Ni–P alloys is featured as amorphous spherical cores homogeneously wrapped by self-generated crystalline Ni3P shells of different thickness, which rely on the molar ratio of Ni2+/H2PO2− in the choline chloride (ChCl)/ethylene glycol (EG) based eutectic mixture. As an anode for lithium ion batteries, cyclic voltammetry curves, electrochemical impedance spectra, and cyclability of the novel structured Ni–P nanoparticles were evaluated. It was found that the sample with a thicker crystalline shell exhibited improved capability and reversibility over the sample with a thinner one, especially at a higher discharge–charge current density. It was suggested that the crystalline shell can enhance the conductivity of the amorphous cores, suppress the aggregation of active particles and increase the structural stability during cycling.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
·
合金设计
✓ 已验证
DOI
高影响因子
iScience
·
2021
·
IF 5.458
Wanying Du,Xionghui Jia,Zhixuan Cheng,Wanjing Xu,Yanping Li,Lun Dai
Two-dimensional (2D) semi-conductive transition metal dichalcogenides (TMDCs) have shown advantages for logic application. Complementary metal-oxide-semiconductor (CMOS) inverter is an important component in integrated circuits in view of low power consumption. So far, the performance of the reported TMDCs-based CMOS inverters is not satisfactory. Besides, most of the inverters were made of mechanically exfoliated materials, which hinders their reproducible production and large-scale integration in practical application. In this study, we demonstrate a practical approach to fabricate CMOS inverter arrays using large-area p -MoTe 2 and n -MoS 2 , which are grown via chemical vapor deposition method. The current characteristics of the channel materials are balanced by atomic layer depositing Al 2 O 3 . Complete logic swing and clear dynamic switching behavior are observed in the inverters. Especially, ultra-low power consumption of ∼0.37 nW is achieved. Our work paves the way for the application of 2D TMDCs materials in large-scale low-power-consumption logic circuits.
研究领域:
电子工程
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·145
·
IF 36.3
Zhai Rui,Wen Zhuorui,Zhao Xuewen,She Junyi,Gu Mengyue,Bu Fanqi,Huang Chang,Meng Guodong,Cheng Yonghong,Zhang Jinying
Violet arsenic phosphorus (VP-As) single crystals were synthesized and characterized by single crystal X-ray diffraction to be P 83.4 As 0.6 (CSD-2408761), the P12 is occupied by arsenic/phosphorus as a mixed occupancy site.
The p-type VP has been switched into n-type VP-As, the effective electron mass was significantly reduced and resulted in high electron mobility of 2622.503 cm 2 V −1 s −1 .
High electron mobility of 137.06 cm 2 V −1 s −1 has been achieved from field effect transistor, much higher than the hole mobility of VP.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Mengzhi Lu,Chi Gong,Tingjiang Lu,Feier Dong,Feilong Dong,Lei Ma,Weiting Yu
The selective catalytic reduction of p-nitrophenol (PNP) to p-aminophenol (PAP) not only mitigates the toxicity of industrial wastewater but also enables resource recovery, representing a promising strategy for sustainable pollutant treatment and wastewater purification. In this study, a zinc-doped cobalt oxide catalyst synthesized via a one-step hydrothermal method was applied to the selective reduction of PNP to PAP. The catalyst demonstrated complete PNP degradation (100%), full selectivity toward PAP (100%), and excellent stability. Isotope tracing experiments were conducted to address the debated issue about the source of activated atomic hydrogen (H*) in the selective reduction of PNP. The results revealed that water acts as the primary source of H* for the catalytic reduction, while sodium borohydride functions as an electron donor. Furthermore, the zinc-doped cobalt oxide catalyst was still robust for PNP degradation in real water samples. This work offers an active and stable catalyst for the selective catalytic reduction of other nitroaromatic pollutants in waste effluents.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 15.7
He Qingyun,Wang Junbo,Wu Mengyang,Zhong Chongyu,Li Lei,Zhao Xiangru,Ding Mengzhu,Yang Pinghui,Li Renzhi,Huang Wei,Qin Tianshi,Wang Fangfang
Formamidinium lead iodide (FAPbI 3 ) perovskite is a leading candidate for high-efficiency solar cells, but its application is hindered by the kinetic instability of its α-phase crystallization. Here, a highly effective strategy for directing the ordered crystallization of α-FAPbI 3 in the n-i-p architecture is developed by incorporating a self-assembled molecule (SAM) into the anti-solvent, unlike conventional phosphate-based SAMs requiring polar protic solvents, the -SCN SAM are processed from non-polar, aprotic solvents compatible with perovskite surfaces. An in-situ formed, self-assembled layer acts as a dynamic template, guiding the top-down crystallization process to yield highly ordered α-phase films. Through a series of in-situ measurements, it is rigorously demonstrated that this SAM treatment suppresses undesirable intermediate phases, accelerates the δ-to-α transition, and strategically slows crystal growth, promoting highly ordered films. This meticulously designed strategy culminates in high-quality perovskite films, enabling single-junction devices with a champion power conversion efficiency (PCE) of 26.18% (certified at 25.67%) and mini-modules with a PCE of 21.70%. These results underscore the power of directed self-assembly in fabricating highly efficient and stable n-i-p perovskite solar cells.
✓ 已验证
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8
Lin Tang,Hongcai Tang,Qian Li,Chang Liu,Xiaolin Liu,Jing Jiang,Qingyi Hu,Xi Liu
Rapid industrialization has intensified global energy demand, highlighting the need for efficient thermal insulation in building heating and cooling systems. Although conventional polymer aerogels are effective thermal insulators, their inherent flammability and toxic smoke release severely limit their safe applications. In this work, we report a protonation-enabled, hydrogen-bond-assisted sol-gel strategy to fabricate intrinsically flame-retardant and thermally insulating poly(p-phenylene benzobisoxazole) (PBO) aerogels. Protonation converts micron-scale PBO fibers into well-dispersed PBO nanofibers (PNFs) that co-assemble with cellulose acetate via hydrogen bonding, enabling robust cellulose/PNF aerogels. This strategy effectively overcomes the gelation instability and structural fragility of pure PBO aerogels, resulting in improved dimensional stability and thermal insulation performance. The resulting aerogels exhibit low density (55 mg·cm −3 ), improved compressive strength (0.64 MPa), and excellent thermal insulation performance. Remarkably, despite the incorporation of flammable cellulose, the aerogels achieve a high limiting oxygen index (LOI, 45–52), demonstrating outstanding flame retardancy (UL 94 V-0) and structural stability. Cone calorimetry tests show that the Cellulose/PNF aerogel has a very low peak heat release rate (pHRR, 23.8 kW/m 2 ), total heat release (THR, 2.3 MJ/m 2 ), and total smoke release (TSR, 3.3 m 2 /m 2 ), indicating a low fire hazard. This work provides an effective approach for converting PBO fibers into flame-retardant PBO aerogels for advanced thermal insulation applications.
✓ 已验证
产品关联
DOI
高影响因子
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