CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Weiming Nie,Xueyi Mei,Weiping Xie,Wei Zhao,Yexin Zhang,Zhaoliang Zhang,Ying Xin,Peng Lu,Jian Zhang
To address short-term emission of massive particulate matter (PM) from diesel engines, rapid regeneration of catalyzed diesel particulate filters (CDPF) based on soot combustion is a considerable challenge. Herein, we employed an aluminosilicate fiber-weaved ceramic paper (CP) as a filter matrix, on which highly active potassium-supported antimony-doped tin oxides (K/ATO) were coated to fabricate a CDPF. The K/ATO/CP monolith preserves the 3D-network structure of CP while incorporating the mesopores of K/ATO, providing potential for trapping soot particles effectively. Furthermore, electricity pulses are designed to pass through the conductive K/ATO coating on the monolith for CDPF regeneration, achieving nearly complete soot conversion within less than half a minute using 1400 J of energy input. Both the reaction rate and the energy efficiency surpass previously reported those of other methods for soot combustion. Mechanism studies revealed that the electricity pulse can stimulate the release of tremendous lattice oxygen from the catalyst and in turn trigger rapid soot combustion, and boost surface sulfate decomposition to alleviate SO 2 poisoning. This work presents an electrification strategy to realize rapid regeneration of CDPF for effective PM elimination utilizing onboard electricity system for hybrid powers.
研究领域:
环境催化
·
材料科学
·
能源工程
·
大气污染防治
·
电化学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2017
·
IF 12.343
Qiming Tang,Yanhui Cui,Junwei Wu,Deyang Qu,Andrew P. Baker,Yiheng Ma,Xiaona Song,Yanchen Liu
Metal sulfides have received tremendous attention due to their superior electrochemical performance. In this study, it is the first time that the ternary tin selenium sulfide, SnSe 0.5 S 0.5 , is investigated as a potential high-performance anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). The SnSe 0.5 S 0.5 /C nanocomposites have also been synthesized through a facile polyol-method followed by a simple hydrothermal process and subsequent sintering. The material demonstrated a high specific capacity and a long-term cycling stability in both Li-ion and Na-ion batteries (625 mA h g −1 for LIB at 500 mA g −1 rate after 1000 cycles, 430 mA h g −1 in a SIB at 200 mA g −1 rate after 100 cycles). Furthermore, the kinetic analysis of Li-ions and Na-ions storage revealed that the extrinsic pseudocapacitive contribution could improve the charge transfer rate during the insertion and extraction of Li-ion and Na-ion, thus enhancing the rate performance and cycling stability. These results demonstrated that the novel tin selenium sulfide (SnSe 0.5 S 0.5 ) material could potentially be an excellent anode material for Li-ion storage and Na-ion storage.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米科技
·
固态化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2019
·
IF 5.04
Peng Zhang,Qiang Ru,Honglin Yan,Xianhua Hou,Fuming Chen,Shejun Hu,Lingzhi Zhao
A hierarchically 3D structured milled lamellar MoS 2 /nano-silicon@carbon hybrid with medium capacity and long-term lifespan is designed by a green and scalable approach using ball milling process and spray-drying/pyrolysis routes. The microspheres consist of low-content nano-silicon (20 wt%), milled lamellar MoS 2 sheets and porous carbon skeletons. A mixture of silicon nanoparticles and MoS 2 flakes serves as an inner core, while porous carbon pyrolyzed from petroleum pitch acts as a protective shell. The particular architecture affords robust mechanical support, abundant buffering space and enhanced electrical conductivity , thus effectively accommodating drastic volume variation during repetitive Li + intercalation/extraction. The Si/MoS 2 @C hybrid delivers a high initial discharge specific capacity of 1257.8 mA h g −1 and exhibits a reversible capacity of 767.52 mA h g −1 at a current density 100 mA g -1 after 250 cycles. Most impressively, the electrode depicts a superior long-cycling durability with a discharge capacity of 537.6 mA h g −1 even after 1200 cycles at a current density of 500 mA g -1 . Meanwhile, the hybrid also shows excellent rate performance such as 388.1 mA h g −1 even at a large current density of 3000 mA g -1 .
研究领域:
材料科学
·
电化学
·
纳米能源材料
·
储能技术
·
先进电池材料
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yi Cao,Shuaifeng Lou,Zhen Sun,Weiping Tang,Yulin Ma,Pengjian Zuo,Jiajun Wang,Chunyu Du,Yunzhi Gao,Geping Yin
Solid-state lithium batteries (SSLBs) exhibit numerous advantages including high safety, high energy density and power density, etc., and therefore become the most promising candidate for next-generation batteries. However, constructing an intimate contact within the composite electrode and the electrode/electrolyte interface via simple mixing and cold-pressing processes is still challenging. Herein, a novel fabrication process for homogeneous composite electrodes used in SSLBs is successfully demonstrated. An in-situ liquid-phase approach employing the [Li(triglyme)] + [TFSI] - (LiG3) solvent-salt complex with excellent stability to modify the sulfide-based solid-state electrolyte interfaces, is introduced into the SSLBs system, which enables SSLBs to work efficiently at lower external pressures. The quasi-solid-state prototype cells with Li 4 Ti 5 O 12 (LTO) active material deliver excellent room-temperature performance, generating a super high capacity of 160 mA h g −1 and high capacity retention of 91.4% for 1500 cycles under 0.25 C. This work gives new insight into the interface engineering, processing and more positive impact on the industrial production of SSLBs.
研究领域:
材料科学
·
电化学
·
固态离子学
·
能源存储
·
界面工程
·
先进电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rui Huang,Ruilong Li,Shaobo Li,Wen Yang,Yu Bai,Zhenhua Wang,Kening Sun
Due to swelling effects, the development of silicon anodes for lithium-ion batteries has been largely hampered by structural and interfacial instability. To implement the growing demand for higher energy density all-solid-state batteries (ASSBs), further improving the stability of the silicon anode structure is the key to breaking through the bottleneck. Here, we synthesize a silicon electrode coated by the conductive nanocarbon layer via in situ electrochemical processes. A 3D fast Li + -electron conduction conformal network composed of nanocarbon and polyvinylidene fluoride (PVDF) is constructed during cycling, expanding the active area and reducing stress concentrations, which leads to reinforced electrode kinetics and mechanical stability . Advanced focused ion beam-scanning electron microscope (FIB-SEM) and high-resolution transmission electron microscope (HRTEM) reveal that harmful phenomena such as electrode cracks, interfacial detachment, and lattice distortion are extremely suppressed, thus significantly enhancing the long-term cycling stability of ASSBs. In particular, the ASSBs assembled with a nano-metric Li 1.175 Nb 0.645 Ti 0.4 O 3 (LNTO) coated LiCoO 2 (LCO) cathode and sulfide electrolytes offer superior long-cycle stability (0.8C for 450 cycles, 80.2%) and rate performance (2C for 1340 cycles, 73.1%).
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米技术
·
固态离子学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 32
·11030-11038
·
IF 4.39
Xinhao Cai,Huihui Yan,Zhengwei Yang,Wenru Li,Haoxiang Yu,Lei Yan,Liyuan Zhang,Miao Shui,Yanhua Cui,Jie Shu
With the development of electric vehicles, more and more attention has been paid to the kinetic performance of batteries, which is related to rapid charge/discharge and safety issues. To improve this aspect, Cu2Nb34O87 nanowires covered by nitrogen and sulfur co-doped carbon (Cu2Nb34O87/NSC nanowires) are prepared by electrospinning combined with surface coating. As-prepared Cu2Nb34O87/NSC nanowires present a high ion diffusion coefficient and electronic conductivity, showing good a kinetic performance. Specifically, they deliver a splendid capacity of 311.2 mA h g−1 at 1 C and a superior cycling stability with a capacity fading of 0.031% per cycle upon 1000 cycles. At the same time, the electrochemical and structural reversibility is fully discussed and demonstrated by ex situ XRD, ex situ SEM and ex situ XPS based on the redox couples of Cu2+/Cu+, Nb5+/Nb4+, and Nb4+/Nb3+. Contributing to peculiar physico-chemical properties, Cu2Nb34O87/NSC nanowires are expected to be a candidate material for the anode in lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固态化学
·
电池技术
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 9
·2778-2784
·
IF 4.029
Guang-mao Li,Qiong Liu,Kui Wu,Zhi-hua Yang,Shi-lie Pan
In view of their inherent defects for commercial infrared nonlinear optical (IR NLO) materials, exploration for new IR NLO materials with excellent performance is an imperative and meaningful work. Herein, we report the successful design and synthesis of two metal-mixed chalcogenides containing divalent cations with d10 electronic configuration: Na2CdGe2S6 and Na2CdGe2Se6. Both of them crystallize in the polar Cc space group and exhibit three-dimensional tunnel structures constructed by the CdQ4 tetrahedra and ∞[GeQ3]n chains with Na+ located in the tunnels. Furthermore, an interesting space group transformation between the monoclinic (Cc) and tetragonal (I4/mcm) systems from Na2CdGe2Se6 to Na2ZnGe2Se6 was discovered, which may arise from the different connection types of their building blocks (more flexible corner-sharing type in Cc while tightly edge-sharing type in I4/mcm). Remarkably, they exhibit type-I phase-matching abilities and large second harmonic generation (SHG) responses (0.8 and 2 times that of benchmark AgGaS2 at 2.09 μm fundamental light). Notably, Na2CdGe2S6 satisfies the essential requirements (coexistence of large NLO response and high laser damage threshold) as one excellent IR NLO material. The structure–property relationship has also been investigated through theoretical calculations and the results indicate that the origin of their NLO effects can be attributed to CdQ4 and GeQ4 units.
研究领域:
材料科学
·
凝聚态物理
·
无机化学
·
光学工程
·
功能材料
✓ 已验证
DOI
高影响因子
Journal of Zhejiang University-SCIENCE A
·
2021
·Vol. 22
·期 10
·792-804
·
IF 2.263
Meng Fan-xu,Song Yan,Mao Li-juan,Zhou Wen-jun,Lin Dao-hui
Soil pollution by diesel fuels is a worldwide environmental problem, but little research has been carried out into on-site techniques for remediation of soil polluted by waste solvents. This study compared chemical oxidation and soil washing methods for their efficiency and environmental and economic impacts. Soil was spiked with 0 # diesel to simulate an actual pollution level of about 1260 mg/kg total petroleum hydrocarbon (TPH). Fenton-like oxidation eliminated 90.4% of the TPH with a Fe 2+ :H 2 O 2 ratio of 1:10 in 5 d compared with 25.8% removal by the activated persulfate method under the same conditions. In washing tests, sodium dodecylbenzenesulfonate and Tween 80 were both unsuitable for TPH washing, while ultrapure water removed 36.1% of TPH in 75 min. Only the Fenton-like oxidation technique met remediation goals based on the screening values of the Guideline for Risk Assessment of Contaminated Sites. The environmental impact and economic assessment of techniques demonstrated the superiority of water washing for dealing with low-degree TPH contamination.
研究领域:
环境科学
·
土壤修复
·
环境污染治理
·
环境工程
·
生态毒理学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2017
·
IF 12.343
Qingyi Zeng,Jing Bai,Jinhua Li,Baoxue Zhou,Yugang Sun
The stability and cost of solar-driven water splitting system are still the main bottlenecks for its large-scale implementation. Here, an ingeniously designed low-cost photoelectrochemical tandem cell possessing three performance-superior components, i.e., a front novel photoanode of WO 3 nanoplates epitaxially coated with [001]-oriented TiO 2 nanoprickles, and a rear Si photovoltaic cell, and a counter-cathode of interlayer-expanded MoS 2 nanostructures , is reported for highly-stable and efficient solar water splitting. The tandem cell shows a close-to-unity Coulomb efficiency for water splitting, and a high and sustained-stable solar-to-hydrogen efficiency in a 35 days’ test. The result also reveals that it is versatile in solar-driven wastewater treatment . Most importantly, the composite photoanode that, for the first time, is proposed using epitaxial-growth based on double-match, i.e. lattice match and band match, shows dramatical improvement in stability and photoelectrochemical performance, in which the photocurrent of the WO 3 / TiO 2 photoanode is improved by 80% without any obvious decay after 100 h of continuous testing compared with a 92% decay in photocurrent for the WO 3 photoanode. The epitaxial TiO 2 layer facilitates interfacial charge transportations and provides a complete sealing of WO 3 surfaces at an atomic level. Such efficient interfacial design and system-level integration of high-performance nanomaterials shed a unique light on the potential large-scale implementation of solar water splitting for renewable hydrogen fuel production.
研究领域:
材料科学
·
能源化学
·
纳米科技
·
光催化
·
可再生能源
·
电化学
·
半导体物理
·
环境工程
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2017
·Vol. 19
·期 4
·1175-1181
·
IF 9.125
Qingqing Gu,Guodong Wen,Yuxiao Ding,Kuang-Hsu Wu,Chengmeng Chen,Dangsheng Su
Nanocarbons have been extensively used as metal-free alternatives to metal catalysts in many oxidative processes owing to their functional groups or defects, which have the activation ability toward oxygen molecules. Herein, reduced graphene oxide (rGO) could be used as catalysts in oxidative desulfurization reactions for the first time to remove sulfur-containing compounds from fuels. Superior catalytic activity and stability are obtained in the aerobic oxidative desulfurization process catalyzed by rGO. A broad range of sulfur-containing aromatic substrates could be removed effectively in this catalytic system. Carbonyl groups have proved to play crucial roles during the oxidation process based on an XPS analysis, a chemical titration method and a series of comparative experiments. The chemically active defects are also beneficial to the catalytic performance because carbonyl groups could be generated in situ on these defects under the reaction conditions. Based on the EPR results, a radical pathway is proposed. Oxygen molecules could interact with the carbon atoms adjacent to carbonyl groups to form adsorbed super oxygen anion radicals (rGO-OO˙−), which then attack the adjacent sulfur-centered cation radicals and generate the final product sulfone.
研究领域:
纳米碳材料
·
催化化学
·
燃料净化
·
环境催化
·
表面化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yanwei Sun,Chunshan Song,Xinwen Guo,Sungwon Hong,Jungkyu Choi,Yi Liu
Metal-organic framework (MOF) membranes have received increasing attention due to their unprecedented potential for energy-efficient gas separation. Compared with other MOF materials (like ZIF), fabrication and microstructural manipulation of high-performance Ti-MOF-based membranes, although being very attractive due to their excellent chemical and thermal stability, remained relatively less investigated due to the limitations of available titanium sources and heating modes. In this study, different Ti sources (TPOT, TiS 2 , and MXene) and heating modes (conventional heating, multi-mode microwave heating, and single-mode microwave heating) were examined for the preparation of NH 2 -MIL-125 membranes showing diverse microstructures and gas separation performances. The present work revealed that for the first time, MXene , the new two-dimensional Ti carbide , could be used as Ti source for synthesizing MOF membranes. The best performing NH 2 -MIL-125 membranes, which were obtained with TiS 2 as the metal source under single-mode microwave heating, exhibited the highest H 2 /CO 2 selectivity (ca. 17.2) as well as considerable H 2 permeance (1.7 × 10 −7 mol m −2 s −1 Pa −1 ), owing to an enhanced non-thermal effect of single-mode microwave heating and balanced dissolution rate of TiS 2 .
研究领域:
材料科学
·
膜分离技术
·
化学工程
·
纳米材料
·
气体分离
·
可持续能源
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2022
·Vol. 6
·期 5
·e12415
·
IF 13.443
Lin Chen,Jingwen Zhou,Junxiang Zhang,Guicai Qi,Bin Wang,Jianli Cheng
High energy density Li-CO 2 batteries have attracted much attention owing to the “two birds with one stone” feature in fixing greenhouse gas CO 2 and providing renewable energy. However, poor reversibility of the discharge product Li 2 CO 3 is one of the main problems that limit its application, resulting in poor cycling stability and severe polarization. Herein, copper indium sulfide (CIS), a semiconducting non-precious metal sulfide, is fabricated as cathode catalysts for high-performance Li-CO 2 batteries. Combined with the synergistic effect of bimetallic valence bonding and coordinated electron transfer, Li-CO 2 batteries using CIS cathodes exhibit high full specific discharge capacity, excellent rate capability and cycle stability, namely it delivers a high specific full discharge capacity of 8878 μAh cm −2 , runs steadily from 10 to 100 μA cm −2 , and performs a stable long-term cycling behavior (>1050 h) under a high energy efficiency of 84% and a low charge voltage of approximately 3.4 V at 20 μA cm −2 within 100 μAh cm −2 . In addition, a flexible Li-CO 2 pouch cell is constructed to reveal the potential of employing CIS to fabricate flexible high energy storage devices in practical applications. This work shows a promising development pathway toward next-generation sustainable energy storage devices.
研究领域:
电化学
·
能源材料
·
纳米催化
·
可持续能源存储
·
金属-气体电池
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）