PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2024
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IF 6.9
Shuoshuo Feng,Xufeng Rao,Xiaoyu Chen,Fanghua Ning,Min Wang,Yuyu Liu
The electrocatalytic reduction of nitrate offers an environmentally friendly means of eliminating hazardous nitrate from wastewater while simultaneously yielding ammonia, a vital fertilizer precursor. Given the importance of nitrate reduction for environmental remediation and the potential of electrochemical methods, the development of a highly efficient and selective electrocatalyst specifically for nitrate reduction to ammonia (NO 3 ER) is crucial. The Cl-doped Co 4 S 3 (Cl-Co 4 S 3 ) catalyst was successfully synthesized via a solvothermal method in methanol, aiming to enhance nitrate electroreduction. The incorporation of chlorine was found to modulate the local electronic environment around cobalt atoms, enhancing their reactivity and leading to exceptional catalytic performance for nitrate reduction, leading to exceptional catalytic performance. At an operating potential of −0.61 V vs. the reversible hydrogen electrode, Cl-Co 4 S 3 exhibited remarkable Faradaic efficiency (97.64 ± 2.03 %) and yield rate (0.652 ± 0.012 mmol h −1 cm −2 ) for ammonia production, surpassing the majority of reported electrocatalysts for NO 3 ER.
研究领域:
环境科学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Qihang Chen,Zihao Huang,Wenna Zhao,Kai Tao,Guochang Li,Lei Han
Transition metal sulfides are gaining attention as a new highly capacitive active material for high-performance supercapacitors, however, it is still a challenge that synthesizes a distinctive structure to enhance the electrochemical characteristics and practical applications. In this work, hierarchical structural hybrid metal sulfides (NiCo 2 S 4 /Co 4 S 3 ) based on nanosheets and nanocages are synthesized by sulfurating the NiCo-LDH/ZIF-67 precursors. The NiCo 2 S 4 /Co 4 S 3 electrode with remarkable layered and porous structure effectively increase the electrochemical active surface area and accelerate the charge transfer, achieving a high specific capacitance of 8.43 F cm −2 at a current density of 2 mA cm −2 and good cyclic stability. An assembled asymmetric supercapacitor with activated carbon delivers a high energy density of 0.50 mWh cm −2 at a power density of 1.69 mW cm −2 . These results demonstrate that NiCo 2 S 4 /Co 4 S 3 is an ideal electrode material for high-performance electrochemical energy storage devices.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Shang Jiang,Miaomiao Mao,Mingjun Pang,Jie Song,Min Pang,Zhaoyang Song,Ruxia Zhang,Runwei Wang,Jianguo Zhao
Carbon-coating nitrogen all-doped Co 9 S 8 /Co 4 S 3 nanoparticles attached to reduced graphene oxide sheets (N-CS@C/G) was developed by an eco-friendly in situ methodology in this study. Glucose-derived carbon nano-wrapped layers and supported reduced graphene oxide were employed to develop a highly conductive network, whereas N dopants , Co 9 S 8 and Co 4 S 3 supplied additional electrochemical active sites for lithium-ion energy storage. The well-designed hetero-structured N-CS@C/G electrode with a specific surface area of 101.29 m 2 g −1 can contribute to notably improving the volume variation and raising electrical conductivity . Under the N-CS@C/G composites with the improved synergistic effect that served as anode, the cell exhibited progressive cycle stability of 662 mA h g −1 at 2 A g −1 when 600 cycles were completed, the high specific capacity of 1039.7 mA h g −1 at 0.05 A g −1 , as well as prominent rate capability, outperforming the parallel comparison materials without the addition of glucose (N-CS) or reduced graphene oxide (N-CS@C). This study is likely to develop a distinctive avenue to produce quick and high-capacity metal sulfide anodes and boot high-performance lithium-ion batteries.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
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2023
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IF 2.8
Kuk Chol Kim,Xiaoqiu Lin,Xiaolu Liu,Congju Li
Microbial fuel cell (MFC) is a promising technology for recovering energy in wastewater through bacterial metabolism. However, it always suffers from low power density and electron transfer efficiency, restricting the application. This study fabricated the MnCo2S4–Co4S3/bamboo charcoal (MCS-CS/BC) through an easy one-step hydrothermal method, and the material was applied to carbon felt (CF) to form high-performance MFC anode. MCS-CS/BC-CF anode exhibited lower Rct (10.1 Ω) than BC-CF (17.24 Ω) and CF anode (116.1 Ω), exhibiting higher electrochemical activity. MCS-CS/BC-CF anode promoted the electron transfer rate and resulted in enhanced power density, which was 9.27 times higher (980 mW m−2) than the bare CF (105.7 mW m−2). MCS-CS/BC-CF anode showed the best biocompatibility which attracted distinctly larger biomass (146.27 mg/μL) than CF (20 mg/μL) and BC-CF anode (20.1 mg/μL). The typical exoelectrogens (Geobacter and etc.) took dramatically higher proportion on MCS-CS/BC-CF anode (59.78%) than CF (2.99%) and BC-CF anode (26.67%). In addition, MCS-CS/BC stimulated the synergistic effect between exoelectrogens and fermentative bacteria, greatly favouring the extracellular electron transfer rate between bacteria and the anode and the power output. This study presented an efficient way of high-performance anode electrocatalyst fabrication for stimulating MFC power generation, giving suggestions for high-efficient energy recovery from wastewater.
研究领域:
环境科学
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材料科学
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生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Qimin Peng,Xue Shao,Chuan Hu,Zuyang Luo,Tayirjan Taylor Isimjan,Zhifeng Dou,Ruobing Hou,Xiulin Yang
Developing the earth-abundant transition metal-based bifunctional electrocatalysts for water splitting and renewable energy devices has attracted much attention. Herein, we report a 1 T-WS 2 in ultrathin nanosheet arrays grafted with Co 4 S 3 on conductive carbon cloth (CC) (1 T-Co 4 S 3 -WS 2 /CC) through a feasible in-situ growth and vulcanization. The optimized 1 T-Co 4 S 3 -WS 2 /CC catalyst exhibits an impressive electrocatalytic activity and remarkable stability with the oxygen/hydrogen evolution reaction (OER/HER: 278/75 mV for 10 mA cm −2 ). It also showed the small Tafel slope values of 61.7 and 58.4 mV dec −1 , respectively. Additionally, the 1 T-Co 4 S 3 -WS 2 /CC (−/+) achieved 1.59 V@10 mA cm −2 in alkaline media superior to the most previously reported non-precious metal electrocatalysts. The outstanding performance could be attributed to the synergy between heterostructures of Co 4 S 3 and 1 T-WS 2 modifying the electronic structure to accelerate water splitting kinetics. Thus, this work presents a rational design of scalable, high-efficiency, stable water splitting electrocatalysts based on WS 2 .
研究领域:
材料科学
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电化学
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可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Xianyu Chu,Yanan Wang,Li Jing,Wei Jiang,Yuanyuan Wu,Ming Lu,Bo Liu,Chunbo Liu,Yantao Sun,Guangbo Che
Constructing heterostructures to regulate the electronic structure is an effective strategy for enhancing the oxygen evolution reaction (OER) electrocatalytic activity. Herein, we prepared heterostructured Co 4 S 3 /CoP 3 (CoPS/NFF) electrocatalysts through a one-step phosphorization and sulfuration process. The synthesized electrode drives an overpotential of 190, 272, and 331 mV at 20, 50, and 100 mA cm −2 for OER in 1 M KOH alkaline media, respectively. These values outperformed those of monophase Co 4 S 3 and CoP 3 as well as the majority of transition metal-based catalysts previously reported. Furthermore, the Density Functional Theory (DFT) calculation results show that charge redistribution occurs at CoPS/NFF heterogeneous interfaces, which facilitates charge transfer and improves catalytic activity. The CoPS/NFF with heterostructure optimizes the adsorption strength of oxygen-containing intermediates (*O, *OH, and *OOH) by appropriately adjusting the d-band center energy level, thereby reducing the energy barrier of OER. This work provides a new perspective on rational design strategies for efficient transition metal-based electrocatalysts by inducing d-band center regulation through the construction of heterostructures.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
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2019
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IF 0
Caifu Dong,Lijun Guo,Haibo Li,Bo Zhang,Xue Gao,Fang Tian,Yitai Qian,Debao Wang,Liqiang Xu
Cobalt sulfides have attracted tremendous attention as promising anodes for sodium-ion batteries owing to their low cost, rich types and high theoretical specific capacity. However, the design and application of cobalt sulfides with long cycling stability and high capacity still remains a great challenge. Herein, CoS 2 /Co 4 S 3 @N-doped carbon (CoS 2 /Co 4 S 3 @NC) microspheres obtained via a simple solvothermal and subsequent annealing approach were investigated as an advanced anode material for sodium-ion batteries. It delivers excellent rate capability (650 mAh g −1 at 0.3 A g −1 , and 217 mAh g −1 at 6 A g −1 ) and ultralong-term cycling performance (256 mAh g −1 after 1500 cycles at 4 A g −1 , and 239 mAh g −1 after 3000 cycles at 6 A g −1 ). The extraordinary electrochemical performance of the present material as anode for SIBs was believed to arise from the unique structure advantages of the composite and the good combination as well as the synergistic effects among the components. In addition, FeFe(CN) 6 //CoS 2 /Co 4 S 3 full cell was assembled and delivered a reversible capacity of 520 mAh g −1 at 500 mA g −1 . This work may provide new directions for constructing promising high-performance SIBs electrodes for electrochemical energy storage.
研究领域:
储能
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材料科学
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电化学
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纳米材料
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电池技术
✓ 已验证
DOI
Molecular Catalysis
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2024
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IF 3.9
Yang Chen,Yatao Yan,Mengting Shao,Yongjian Xu,Guowang Diao,Ming Chen
In this work, N, P-Co 4 S 3 /NC nanospheres were successfully synthesized by double ligand strategy, followed by calcination and phosphating. By adjusting the radio of methimazole and 2-methylimidazole, and changing the calcination temperature, we obtained the optimal hydrogen evolution catalyst. The doping of N and P can regulate the electronic structure of Co, and further improve the electrocatalytic hydrogen production performance. Furthermore, N from dual ligands can form nitrogen-doped carbon, thus enhancing the conductivity and stability of the catalyst. The experimental results showed that N, P-Co 4 S 3 /NC exhibited good full pH activity in 0.5 M H 2 SO 4 , 1.0 M PBS and 1.0 M KOH, and the overpotentials of 163, 185 and 168 mV were required to reach the current density of 10 mA cm −2 , respectively. In this study, the dual ligands strategy can propose a new path for the design and synthesis of the catalyst precursor, and N, P codoping can effectively enhance the catalyst performance.
研究领域:
材料科学
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电催化
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Xin Cui,Xiaoyang Yang,Zeyi Liu,Wei Jiang,Jiafeng Wan,Yifu Liu,Fangwei Ma
Construction of Prussian blue analogues (PBAs) with heterostructure is beneficial to preparing PBAs derivatives with superior electrochemical performance. In this work, the core–shell nanostructured nanocubes composed of nickel hexacyanocobalt PBA (NiCo-PBA)@cobalt carbonate hydroxide (CCH) are synthesized through an in-situ epitaxial growth strategy, and the formation mechanisms of coating are carefully validated and specifically discussed. Then, the precursors are successfully transformed into hierarchical CoNi 2 S 4 /Co 9 S 8 @Co 4 S 3 via the gas-phase vulcanization method. Benefiting from the intriguing heterostructure and multicomponent sulfides, the CoNi 2 S 4 /Co 9 S 8 @Co 4 S 3 -80 electrode exhibits a high specific capacity of 799 ± 16C/g (specific capacitance of 1595 ± 31F/g) at 1 A/g, ultra-high capacity retention of 80 % at a high current density of 20 A/g. The assembled asymmetric supercapacitor (ASC) device delivers a high energy density of 43.3 Wh kg −1 at a power density of 899 W kg −1 and exhibits superior cycling stability with the capacity retention of 88 % after 5,000 cycles. Subsequently, the fabricated all-solid-state ASC device shows an excellent energy density of 36.4 Wh kg −1 with a power density of 824 W kg −1 . This work proposing rational design of combining multicomponent sulfides and core–shell heterostructure based on PBA nanocubes opens up a novel route for developing asymmetric supercapacitor electrode materials with superior performance.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
·
IF 9.9
Jiawen Yan,Ke Sang,Xiaohan Jiang,Qiming Li,Fuyi Jiang,Yanli Zhou
In this study, amorphous MoS 3 -modified porous Co 4 S 3 -embedded N,S co-doped carbon polyhedron (Co 4 S 3 @NSC/MoS 3 ) was rationally prepared via a multi-step method. One-dimensional linear-like MoS 3 with a high specific capacity of 894 mAh g −1 and abundant active sites compensated for the low capacity of Co 4 S 3 , thus enhancing the sodium ion storage capacity of the entire electrode. Moreover, three-dimensional N,S co-doped carbon networks (NSC) significantly inhibited large volumetric fluctuations in Co 4 S 3 and MoS 3 , thereby sustaining the structural stability and enhancing the electron transfer efficiency. As a new anode material for sodium-ion half batteries, the constructed Co 4 S 3 @NSC/MoS 3 with rapid Na + diffusion and charge transfer kinetics demonstrated better sodium storage properties than Co 4 S 3 @NSC. At a rate of 0.5 A g −1 over 100 cycles, the reversible specific capacity of Co 4 S 3 @NSC/MoS 3 reached 594 mAh g −1 . Even when cycled at a rate of 2 A g −1 for 600 cycles, the charge capacity was stable at 435 mAh g −1 . The rate performance of Co 4 S 3 @NSC/MoS 3 was also found to be remarkable; when the rate increased to 10 A g −1 , the average capacity was retained at 382 mAh g −1 . Apart from half cells, reduced graphene oxide (rGO)-modified Na 3 V 2 (PO 4 ) 3 composite (Na 3 V 2 (PO 4 ) 3 @rGO) was used as the cathode material to match with Co 4 S 3 @NSC/MoS 3 . The assembled full batteries were analyzed and their electrochemical properties were discussed. They also exhibited outstanding rate capability and high-rate long-life cyclic property. Even at 1 A g −1 over 500 cycles, the discharge capacity was stably maintained at 246 mAh g −1 . The outstanding sodium storage properties of Co 4 S 3 @NSC/MoS 3 mainly depended on the cooperative effects of MoS 3 and Co 4 S 3 @NSC, indicating the potential application of Co 4 S 3 @NSC/MoS 3 in energy storage fields.
研究领域:
材料科学
·
能源存储
✓ 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）