SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhenzhong Liu,Suyue Luo,Xinran Yin,Shuo Zhang,Minghui Guo
The present work effectively achieved the production of a self-supporting electrode with high efficiency. The process involves incorporating nickel and molybdenum carbide (Mo 2 C) phases within the channels of wood through high-temperature calcination at the nanoscale. The obtained carbonized wood (CW) possesses low tortuosity and three-dimensional vertical channels, providing an excellent substrate for the preparation of Ni-Mo 2 C/N-CW electrodes. Mo 2 C is well known for its considerable potential as a non-precious metal electrocatalyst with enhanced catalytic activity. The successful doping of nickel and nitrogen into molybdenum carbide not only promotes the formation of β-Mo 2 C, but also improves the electron transfer rate and mass diffusion pathway. Consequently, the Ni-Mo 2 C/N-CW electrode exhibits excellent performance in the hydrogen and oxygen evolution reactions (HER and OER, respectively). Only voltages of 89 and 253 mV are required to achieve a current density of 10 mA cm −2 , respectively. When the Ni-Mo 2 C/N-CW catalyst is used as both cathode and anode during hydrolysis, current densities of 10 and 100 mA cm −2 can be achieved with excellent durability and stability at voltages of 1.56 and 1.72 V, respectively. The distinctive porous structure of the wood substrate is of crucial importance for promoting the adsorption and dissociation of water molecules, enhancing the catalytic performance. In addition, the present material exhibits advantageous characteristics, including a high specific surface area and a significant number of adsorption sites, making it a very promising candidate for applications involving the adsorption of dyes, such as rhodamine B (RhB).
研究领域:
材料科学
·
电化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 27
·14642-14650
·
IF 6.895
Longfei Han,Junling Wang,Xiaowei Mu,Can Liao,Wei Cai,Zhixin Zhao,Yongchun Kan,Weiyi Xing,Yuan Hu
Red phosphorus (P) is considered to be the most suitable electrode for sodium-ion batteries due to its low cost, earth abundance and high theoretical capacity. Numerous studies have focused on improving the low conductivity and the extremely large volume change of red P during the cycling process. However, these strategies heavily decrease the P mass loading in the electrode. Herein, inspired by natural wood, we successfully develop an ultra-thick bulk red Phosphorus@Carbon-Wood (red P@C-Wood) electrode via the vaporization-condensation process. The sodium-ion batteries assembled with the fabricated red P@C-Wood electrode provide a high areal capacity of 18 mA h cm−2 (≈5 times those of other reported electrodes) and the P mass loading of up to 8.4 mg cm−2 (≥2 times those of other reported electrodes). The combination of red phosphorus and carbonized wood provides a new strategy for people to improve the areal energy density of lithium and sodium batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2022
·Vol. 6
·期 9
·2249-2255
·
IF 6.813
Zaimiao Zhang,Yaru Zheng,Nan Jiang,Wenqing Hong,Tianyu Liu,Hao Jiang,Yanjie Hu,Chunzhong Li
Electric energy harvesting from natural water evaporation has attracted great attention in the sustainable development of human society. However, ultra-low short-circuit current extremely hinders its widespread deployment. Herein, we report a high-performance wood-based hydroelectric generator (WHEG) based on highly conductive carbonized wood (C-wood) with abundant hydroxyls via a Lewis acid metal salt-catalyzed carbonization strategy. The high hydroxyl content greatly improves the zeta potential and the high electrical conductivity remarkably reduces the internal resistance, thus boosting the output of electrical energy from water evaporation. These advantages make the obtained WHEG (6.5 × 1.5 × 0.4 cm3) exhibit an open-circuit voltage of 96 mV and a remarkable short-circuit current of 10.5 μA under ambient conditions (45% RH, 25 °C), which is an order of magnitude higher than that of most previous studies. Furthermore, commercial electronics such as calculators and LEDs can be powered by the WHEG system in series or parallel connections.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Kai Yang,Qiang Yang,Zhao Li,Daotong Zhang,Chaozheng Liu,Pu Yang,Yiying Ling,Yaorong Hu,Yimei Liu,Min Luo,Weimin Chen,Xiaoyan Zhou
Using bottom-top methodology to load metal oxides with high pseudocapacitive activity onto carbonized wood (CW) is an efficient strategy to fabricate electrodes with large capacitance, while the morphology and metal valence in metal oxides are as important as their content but have received little attention. Herein, a heating treatment integrating carbonization and activation processes is used on Cu 2+ loaded natural wood to prepare CW/Cu x O y electrodes in which Cu x O y with pseudocapacitive activity and CW with a high specific surface area (SSA) of 832 m 2 /g and good electric conductivity of 1.25 S cm −1 are collaboratively achieving a capacitance of 430.5F/g at 150 mA g −1 . Then, a constant potential method is utilized not only to regulate the valence state of Cu and Cu 2+ in Cu x O y to Cu + with much higher pseudocapacitive activity, but also to convert the morphology of Cu x O y from sphericity to urchin-like and cluster structure with more available active sites. Therefore, the optimized electrode achieves a greatly improved capacitance of 855F/g, and the fabricated supercapacitor delivers an energy density of 75.93 Wh kg −1 at 138 W kg −1 . This work provides an approach to enhance the specific capacitance of metal oxides-based electrodes from a fresh perspective.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Danning Wang,Yuanjie Gu,Long Cheng,Shijing Sun,Weisheng Yang,Shuijian He,Shaohua Jiang,Hongqi Dai,Qinglin Wu,Huining Xiao,Jingquan Han
Traditional electrode materials for supercapacitors often face issues like high toxicity, cost, and non-renewability. To address these drawbacks, biomass-based alternatives are being explored, aligning with green development trends. Herein, carbonized wood (CW) with rich pore structure and redox-active lignin are combined to fabricate an all-wood-based sustainable supercapacitor electrode material. Due to its inherent porous structure, CW provides a larger surface area for accommodating active materials ion, enabling the electrode to achieve a higher lignin loading capacity of 2.82–11.68 mg/cm 2 . Furthermore, the utilization of lignin as a substitute for conventional transition metal-based pseudocapacitor material functionalized CW endows the electrode with exemplary electrochemical performance while guaranteeing the comprehensive sustainability of the electrode. This synergy confers the electrode with exceptional electrical performance, yielding an areal capacitance of 960.7 mF/cm 2 at a current density of 1 mA/cm 2 . The symmetric supercapacitors (SSC) manufactured by this composite electrode can achieve a notable areal energy density of 0.14 mWh/cm 2 and a power density of 15.98 mW/cm 2 , while maintaining an outstanding capacitance retention rate of 81 % after 50,000 cycles at 20 mA/cm 2 . The manufacture of CW-lignin electrode underscores the potential of utilizing renewable biomass resources as alternatives for developing high-performance energy storage applications, thereby reducing negative environmental impacts.
研究领域:
材料科学
·
能源存储
·
生物质利用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Zebo Wu,Dan Liu,Wenhao Wang,Hongtong Xie,Xianghui Chen,Huibin Yin
Magnetized wood (M–W) has been proposed to be used as an absorber in solar-driven interfacial evaporation. The M−W could gain an evaporation rate of 1.46 kg m −2 h −1 under the combined effect of sunlight and magnetic fields, which is 27 % higher than carbonized wood (C–W). To explore the mechanism, they were subjected to SEM, XPS, and water contact angle tests. It is revealing that M−W forms much more microchannels for steam diffusion. The M−W shows 97 % optical absorption within the whole wavelength, while the C–W is lower than 85 %, revealing the M−W can gather most of the solar radiation. Finally, the permeability coefficients of carbonized and magnetized woods are calculated by the CFD model. The permeability coefficient of the M−W is 20 % higher than the C–W, which can be attributed to Fe 3 O 4 nanoparticles disturbing the steam growth in the magnetic field, hence decreasing the thickness of the liquid film covering the bubbles and improving the solar evaporation rate.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Bin Zhang,Wenkai Ye,Jiahao Hu,Tuo Ji,Han Lin,Liwen Mu,Xiaohua Lu,Jiahua Zhu
The oxygen evolution reaction (OER) is a critical half-reaction that occurs at the anode for water electrolysis, along with sluggish kinetics and high overpotential owing to its four-electron transfer process. Iridium-based electrocatalysts are recognized as the superior OER performance, but are limited by high cost and shortage reserves. Hence, we report a monolithic electrode with Ni doped Cu 2-x O growth on the carbonized wood (CW) surface by an alternating plasma-enhanced atomic layer deposition (PEALD) strategy. The alternating deposition of Ni and Cu 2-x O ensures uniform doping of Ni and facilitates the electron transfer from d -orbital of Cu 2 ⁺ to the Ni site. This electron transfer reduces electron repulsion among the p -orbitals of the coordinated O atoms, enhancing the local metal-oxygen bonding strength and adjusting the charge at the Cu site. Consequently, the electronic structure of the catalyst is optimized, leading to exceptional OER performance with an overpotential of 110.2 mV at 10 mA cm −2 and significantly enhanced stability of 75 h.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Advanced Ceramics
·
2021
·Vol. 10
·期 6
·1291-1298
·
IF 6.707
Huang Jiaxuan,Wan Hujie,Li Mian,Zhang Yiming,Zhu Jianfeng,Li Xuelin,Shui Wenchao,Li Yao,Fan Xiaomeng,Wen Qiye,Xiao Xu,Huang Qing
Electromagnetic interference (EMI) shielding materials have received considerable attention in recent years. The EMI shielding effectiveness (SE) of materials depends on not only their composition but also their microstructures. Among various microstructure prototypes, porous structures provide the advantages of low density and high terahertz wave absorption. In this study, by using carbonised wood (CW) as a template, 1-mm-thick MAX@CW composites (Ti 2 AlC@CW, V 2 AlC@CW, and Cr 2 AlC@CW) with a porous structure were fabricated through the molten salt method. The MAX@CW composites led to the formation of a conductive network and multilayer interface, which resulted in improved EMI SE. The average EMI SE values of the three MAX@CW composites were > 45 dB in the frequency of 0.6–1.6 THz. Among the composites, V 2 AlC@CW exhibited the highest average EMI SE of 55 dB.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Yuanpeng Qian,Mengliang Hu,Liping Li,Xuepeng Liu,Shuqi Cao,Chuigen Guo
Nickel-based materials exhibit great potential in the field of hydrogen evolution reaction (HER), however, the low catalytic active site and poor corrosion resistance still limit further application. Herein, a novel 3D self-supporting electrode of graphene oxide/nickel-cobalt/carbonized wood (GO/Ni–Co/CW) based on porous carbon is developed. The self-supporting structure of the electrode effectively prevents the shedding of catalytic materials, while the exposed active sites of the Ni–Co nanosheets ensure excellent catalysis and the decoration of GO further enhances the HER performance. Evidently, GO/Ni–Co/CW requires an overpotential of 52 mV in 0.5 M H 2 SO 4 and 70 mV in 1 M KOH to achieve a current density of 10 mA cm −2 . Furthermore, the introduction of GO greatly improves the stability performance of the electrode due to its corrosion resistance, as found by the catalytic stability performance test. As a new idea, GO decorated Ni–Co nanosheets grown on wood-based porous carbon as electrodes fully combine and exploit the advantages of CW's 3D porous structure , Ni–Co nanosheets' catalytic activity , and GO's corrosion resistance, which provide an effective strategy for novel nickel-based HER electrocatalysts .
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yuning Wang,Wenrui Yao,Zehuai Li,Haiyan Tan,Ce Sun,Dingyuan Zheng,Yanhua Zhang
The extensive use of organic dyes has led to significant water pollution. Using lignocellulosic waste as a precursor for catalysts preparation for sewage remediation presents an effective alternative with numerous advantages in sustainability, cost-effectiveness, and environmental compatibility. In this work, wood fiber waste collected from wood processing plants was decorated with Prussian blue (PB) and then annealed to produce carbonized wood fiber catalyst (Fe 3 C@Fe-CB). In the presence of peroxymonosulfate (PMS), the prepared catalyst could achieve over 98.69 % efficiency in degrading methylene blue (MB) solutions (20 mg/L) in 60 min across a pH range of 3 to 11. Electrochemical test and electron paramagnetic resonance (EPR) analysis respectively verified that electron transfer pathway and radical pathway were the key factors for the degradation of MB. Cyclic degradation tests demonstrated that the degradation efficiency remained above 93.67 % after five recycling experiments. Moreover, the used magnetic catalyst can be easily recycled by magnet. This study proposed a facile and sustainable carbonized wood fiber catalyst decorated by Fe 3 C@Fe-CB, which could realize efficient elimination of organic dyes. Moreover, we offered a novel choice for dyes-polluted water treatment and paving a new route for converting low-value lignocellulosic waste to high-value utilizations.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 3
·2369-2377
·
IF 11.806
Wang Zhipeng,Yin Kuan,Zhang Yuliang,Sun Kai,Xie Longjie,Cong Mengyang,Cao Shengjia,Lei Yanhua,Li Xiaofeng,Fan Runhua
In recent years, random composites with negative permittivity have been widely concerned owing to their unique properties and broad application prospects. In this paper, Ti 3 C 2 T x /carbonized wood (CW) composites with weakly negative permittivity were prepared by using CW as matrix and two-dimensional layered Ti 3 C 2 T x as the functional filler. The results of dielectric properties indicated that when the content of Ti 3 C 2 T x was 42.5 wt%, three-dimensional conductive networks were formed universally on the surface and inside the CW matrix. Meanwhile, the conduction mechanism changed from jumping conduction to metal-like conduction. Besides, the permittivity values of Ti 3 C 2 T x /CW composites changed from positive to negative and significantly reduced to the range of −65 to −35. This unique phenomenon was owing to the total electron concentration in the Ti 3 C 2 T x /CW composite being diluted equivalently, resulting in the decrease of plasma frequency, thus showing a weakly negative permittivity. This work provides a new strategy to determine the suitable content of conductive filler using percolation theory. Furthermore, the original fantastic structure properties of Ti 3 C 2 T x and wood also opened a new way for designing metacomposites, which has very important research value and far-reaching research significance. Graphical abstract Weakly negative permittivity achieved in two-dimensional Ti 3 C 2 T x /carbonized wood metacomposites.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Fang Wang,Haidong Zhang,Zhengguo Zhang,Qingxiang Ma,Chao Kong,Shixiong Min
Efficient electrocatalytic reduction of CO 2 to value-added chemicals and fuels is a promising technology for mitigating energy shortage and pollution issues yet highly relay on the development of high-performance electrocatalysts. Herein, we develop an effective strategy to fabricate carbonized wood membrane (CW) decorated with AuPd alloy nanoparticles with tunable composition (termed as AuPd@CW) as self-supported electrodes for efficient electrocatalytic CO 2 reduction. The uniformly distributed AuPd nanoparticles on wood matrix are first achieved through the in-situ reduction of metal cations by the lignin content in wood. Subsequently, two-step carbonization was employed to promote the alloying of AuPd nanoparticles and the formation of CW. The AuPd@CW membrane electrode features an integrated macroscopic structure with numerous open and aligned channels for rapid electron transfer and mass diffusion and well-dispersed AuPd alloy nanoparticles as active sites for the CO 2 reduction. The optimal Au 95 Pd 5 @CW electrode affords a high selectivity for CO 2 electroreduction with a maximum CO faradaic efficiency (FE CO ) of 82% at an overpotential of 0.49 V, much higher than those obtained on Au@CW and Pd@CW electrodes. The CO current density and FE CO remain relatively stable during a 12 h electrolysis reaction. In addition, density functional theory (DFT) calculations reveal that alloying Au with Pd enables a balance between the formation of intermediate COOH* and the desorption of CO on the surface of AuPd nanoparticles, thus enhancing the selectivity of CO production. This work offers an effective strategy for the fabrication of bimetallic alloys supported on wood-based carbon membrane as a practical electrode for electrochemical energy conversion.
研究领域:
材料科学
·
环境科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）