CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yongdong Liu,Zengwei Pang,MiaoMiao Liu,Quanxing Liao,Yunfeng Li,Xiaohui Niu,Hongxia Li,Kunjie Wang
As one of the promising alternatives for high energy-power supplying system, sodium ion hybrid capacitors (SIHCs) still remain a challenge towards seeking robust anode materials for hosting larger Na + . Cobalt sulfides are expected to be desired anode material due to its high capacity and superior thermal stability, but the application is hindered by the huge volume change. Herein, a hollow core-shell architectural Co 9 S 8 dodecahedron with dual‑carbon confinement (Co 9 S 8 /C@CNPS) is fabricated by controllable pyrolysis of ZIF-67 assisted with polymer. The unique structural features of small particle size, ample surface heteroatom doping, hollow architecture and dual‑carbon confinement can effectively shorten ions/electron transport path, offer abundant active sites as well as relax volume strain upon cycling. Consequently, the fast kinetic behavior and robust host structure endow Co 9 S 8 /C@CNPS with impressive performance for Na + storage. By integrating Co 9 S 8 /C@CNPS anode with a tobacco-derived biomass porous carbon (DTPC) cathode, the as-assembled SIHC demonstrates a high energy density of 96.5 W h kg −1 , high power supplying of 21 kW kg −1 and a long cycling stability with high capacity retention of 97.98 % after 10,000 cycles at 1 A g −1 . This work may shed light on the role of the structural engineering in electrode materials design.
研究领域:
储能材料
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纳米材料
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电化学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Weibin Chen,Chao Chen,Lei Li,Zhan Lin
Transition metal sulfides and their hybrids are promising alternative to precious metal catalyst for the oxygen evolution reaction (OER). Herein, the high-density Co 9 S 8 nanoparticles (NPs) embedded in N-doped carbon has been prepared by using surface-engineered zeolitic imidazolate framework-9 (ZIF-9) nanosheets as precursor. The surface of ZIF-9 was modified with TAA , which is able to create chemical barrier and prevents metal from aggregation in the subsequent pyrolysis , thus making small Co 9 S 8 NPs densely anchored on carbon layers . Arising from the unique structure, Co 9 S 8 @NC affords an optimized electronic structure and rich effective reactive sites for OER. As expected, Co 9 S 8 @NC exhibits small overpotential of 264 mV at 10 mA cm −2 , low Tafel slope of 68.4 mV dec −1 , and superior stability for alkaline OER (0.1 M KOH). The electrolysis cell , which was equipped with Co 9 S 8 @NC cathode and Pt/C anode, shows low water splitting voltage of 1.58 V at 10 mA cm −2 in 1.0 M KOH. This work employs an efficacious surface engineering strategy to design metal sulfide-based electrocatalysts for enhancing OER performance.
研究领域:
材料科学
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电化学
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催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Baochuan Shao,Yanyan Ma,Liren Wu,Feiyang Xu,Mengyao Wei,Yuanbin Qin,Lei Liu,Yongmei Li,Yiru Ma,Fengyun Wang
Rechargeable sodium-ion batteries (SIBs) offer significant promise for the energy market due to their environmental friendliness, low cost, and high energy density. However, challenges such as volume expansion and sluggish reaction kinetics during charging/discharging limit the widespread practical development of SIBs. Herein, a hollow flower-like heterostructure composite material, g-Co 9 S 8 /MoS 2 @NS-C, was synthesized via a glucose-assisted hydrothermal method followed by a one-step water bath process, where g stands for glucose-derived carbon acting as the carbon structure. The hollow Co 9 S 8 framework derived from ZIF-67 provides structural stability, and accommodates volume changes during redox reactions. The Co 9 S 8 /MoS 2 heterointerface establishes a built-in electric field, which can promote the fast migration of electrons/ions. In addition, doped N and S heteroatoms within the carbon matrix and conductive carbon coating layer may cooperate synergistically not only to improve total conductivity, but also to generate more active sites. Consequently, when used as the anode of sodium batteries, the composite can exhibit a capacity value of 433.4 mAh g −1 after 200 cycles at 2 A g −1 , achieving superior capacity retention. Additionally, the electrode can still offer a particular capacity of 386.6 mAh g −1 at 5 A g −1 . Remarkably, it maintains 377.0 mAh g −1 after 200 cycles even at −30 °C under 50 mA g −1 , demonstrating exceptional low-temperature stability. This research can offer a possible route to high-performance anodes for SIBs.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2020
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IF 14.588
Boyu Li,Qingmei Su,Lintao Yu,Jun Zhang,Gaohui Du,Dong Wang,Di Han,Miao Zhang,Shukai Ding,Bingshe Xu
The introduction of a dual-functional interlayer into lithium–sulfur batteries (LSBs) provides many opportunities for restraining the “shuttle effect” and enhancing sluggish sulfur conversion kinetics. Tuning the band structure of the metal sulfide provides an opportunity to enhance its catalytic activity, which plays an important role in suppressing the “shuttle effect” of lithium polysulfides (LiPSs) in LSBs. Here were present a Co9S8@MoS2 core–shell heterostructure anchored to a carbon nanofiber (Co9S8@MoS2/CNF), developed as an interlayer for suppressing the shuttle effect of LiPSs. The fabricated composite heterostructure is determined to be an effective alternative material that combines the synergistic relationship between chemisorption and electrochemical catalysis. We find that the band structure of the MoS2 shell can be effectively tuned by the Co9S8 core and that the Co9S8@MoS2/CNF can capture the LiPSs, providing excellent catalytic ability to convert LiPSs into Li2S2, with subsequent transformation from Li2S2 to Li2S. Importantly, high capacities of 1002 and 986 mAh g–1 can be retained after 50 cycles with high-sulfur loadings of 6 and 10 mg cm–2. Our results highlight the design of an atomic-scale heterostructure as a multifunctional interlayer providing a synergistic relationship between adsorption and catalysis. The net result is an effective retardation of the shuttling of LiPSs and an enhancement of the electrochemical redox reactions of LiPSs. This work shows great promise toward the development of practical applications of LSBs.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2020
·
IF 8.758
Wenming Zhang,Xinyan Zhao,Youwei Zhao,Jiaqing Zhang,Xiaoting Li,Lide Fang,Ling Li
Herein, we first propose a facile strategy to synthesize Co9S8 and MoS2 nanocrystals embedded in porous carbon nanoflake arrays supported on carbon nanofibers (Co9S8-MoS2/N-CNAs@CNFs) by the pyrolysis of Mo-doped Zn, Co zeolitic imidazolate framework grown on carbon nanofibers and subsequent sulfuration. The electrocatalyst shows high and stable electrocatalytic performance, with a half-wave potential of 0.82 V for oxygen reduction reaction and an overpotential at 10 mA cm–2 for oxygen evolution reaction (0.34 V) and hydrogen evolution reaction (0.163 V), which outperform the metal–organic framework-derived transition metal sulfide catalysts reported so far. Furthermore, the Co9S8-MoS2@N-CNAs@CNFs are employed as an air cathode in a liquid-state and all-solid-state zinc-air battery, presenting high power densities of 222 and 96 mW cm–2, respectively. Such excellent catalytic activities are mainly owing to the unique three-dimensional structure and chemical compositions, optimal electronic conductivity, adequate surface area, and the abundance of active sites. Thus, this work provides an important method for designing other metal–organic framework-derived three-dimensional structural sulfide quantum dot multifunctional electrocatalysts for wider application in highly efficient catalysis and energy storage.
研究领域:
材料科学
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电化学
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能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Energy Research
·
2022
·
IF 3.858
Wu Bo,Ma Ran,Liu Xuewei,Zheng Yuqi,Guo Sisheng,Yi Yanmeng,Sun Mingtai,Wang Suhua,Wen Tao
Transition metal sulfides are favored as anode materials for the next generation of lithium-ion batteries because of their high theoretical capacities and abundant natural resources. However, serious volume changes during charging and discharging pose great challenges to their stability. In this work, petal-like MoS2/Co9S8/C nanohybrids were synthesized via the immobilization of molybdyl acetoacetonate MoO2(acac)2 in ZIF-67 and subsequent combined vulcanization and thermolysis process. Benefiting from the homogeneous bimetallic sulfide and highly conductive carbon layer, the as-obtained MoS2/Co9S8/C nanohybrids exhibited a high initial discharge capacity of 988.3 mAh g−1 at 200 mA g−1 and a capacity retention > 99.9% after 50 cycles. Even at a high current density of 1000 mA g−1, the reversible capacity of MoS2/Co9S8/C is still as high as 754.6 mAh g−1, revealing extraordinary rate ability. This work can provide a general approach to design and synthesize other advanced bimetallic chalcogenides for boosting lithium-ion batteries storage performance.
研究领域:
材料科学
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电化学
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能量存储
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
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IF 3.131
Yan Gao,Chunqiao Jin,Xiaocai Li,Kaili Wu,Linna Gao,Xintian Lyu,Xianxi Zhang,Xiao Zhang,Xiliang Luo,Qingyun Liu
Porphyrins modified inorganic semiconductors as a platform in nanomaterials have been paid more attention, due to the fast electron transfer from synergistic effect. Two-Dimensional 5,10,15,20-tetra(4-carboxyphenyl)porphyrin-Co 9 S 8 nanocomposites (H 2 TCPP-Co 9 S 8 nanocomposites) were synthesized via a simple one-step hydrothermal method . A simple and highly sensitive method toward colorimetric biosensing of H 2 O 2 was developed by monitoring the color change of chromogenic substrate 3,3,5,5-tetramethylbenzidine (TMB) from colorless to blue. Notably, the H 2 TCPP-Co 9 S 8 nanocomposites were proved to possess the highly peroxidase-like activity, compared with that of pure Co 9 S 8 nanosheets . Unusually, ESR data verified that the catalytic mechanism of H 2 TCPP-Co 9 S 8 was firstly ascribed to production of superoxide radicals. The detection limit of H 2 O 2 was 8.19 μM and the linear range from 10 to 200 μM. Similarly, The detection limit of glutathione is as low as 0.194 μM with a linear range of 0.3–10 μM. Furthermore, this sensor has shown high selectivity to H 2 O 2 detection and was successfully applied in H 2 O 2 detection in contact lens fluid samples with satisfying results.
研究领域:
材料科学
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纳米技术
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分析化学
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生物传感器
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2023
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IF 3.9
Yunong Qin,Wanzhihan Zhang,Rui Wang,Ling Li,Xiaohui Zhao,Wenming Zhang
Herein, a novel strategy to establish a porous FeS–Co9S8/carbon aerogel (FeS–Co9S8/NCA) electrocatalyst for oxygen evolution reaction (OER) is fabricated via applying a green biomass carrageenan sulfuration method to CoFe–metal–organic frameworks (MOFs). The FeS–Co9S8/NCA exhibits optimized catalytic activity toward the OER with a lower overpotential of 322 mV, which is overmatched to the majority of transition metal sulfides (TMSs), as well as lifted long-term durability without evident variation in the LSV curves after 3000 cycles. Rechargeable liquid zinc–air battery (ZAB) assembled with FeS–Co9S8/NCA as the OER catalyst indicated a maximum power density of 176 mW cm–2 and superior cycling stability without raised polarization even after 48 h, outperforms commercial RuO2-based ZAB. Furthermore, the flexible solid-state ZAB built with FeS–Co9S8/NCA also demonstrated outdistance properties and bendability. The excellent performance stems from the hierarchical porous aerogel structure, which offers a multiscale mass/electron transport channel, together with the interfacial synergy effect between FeS and Co9S8, which serves as the active site of the OER reaction. Thus, this work instituted a novel strategy for obtaining both clean and efficient transition metal sulfide electrocatalysts for the OER reaction and an environmentally friendly biomass material-based sustainable electrocatalyst.
研究领域:
材料科学
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电化学
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能源存储
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可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Qin Wu,Ruichen Chen,Pengju Su,Daxin Shi,Yaoyuan Zhang,Kangcheng Chen,Hansheng Li
Carbon-based materials derived from metal-organic framework compounds have tunable chemical composition , morphology, and electrochemically active surface combined with good electrical conductivity and stability. In this work, Fe(OH) 3 grows on a zeolitic imidazolate framework , 2-Methylimidazole cobalt salt (ZIF-67), through oxidation and deposition. The Co 9 S 8 /NC@FeCoS 2 /NC composites with hollow yolk shell structure (HYS-Co 9 S 8 /NC@FeCoS 2 /NC) is prepared through solvothermal sulfidation combined with high-temperature carbonization using ZIF-67@Fe(OH) 3 as the precursor. A dye-sensitized solar cell assembled with HYS-Co 9 S 8 /NC@FeCoS 2 /NC as a counter electrode achieves a photovoltaic conversion efficiency of 7.07% (PCE Pt = 7.36%). The reason for this phenomenon is that the hollow yolk shell structure of Co 9 S 8 /NC@FeCoS 2 /NC material has a high specific surface area, which affords a good deal of active sites and promotes the contact between electrolyte and catalytic sites. The Fe-Co bimetal center synergies with each other to catalyze the reduction of iodide ion, showing a high catalytic activity. Besides, the material has good electrochemical stability in iodide-based electrolysis.
研究领域:
材料科学
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电化学
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太阳能
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
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2022
·Vol. 9
·期 9
·3629-3645
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IF 9.473
Jiamei Li,Jia Wei,Mengdie Xu,Guoping Pan,Yifei Zhang,Luyi Xing,Yanan Li,Jun Li,Zijian Jiang
Metal sulfides have been found to be effective in removing organic pollutants from water in environmental catalysis. In this study, a porous graphitic biochar wrapped Co9S8 core–shell composite (Co9S8@N–O–BC) was designed for efficient activation of peroxymonosulfate (PMS) and degradation of sulfamethoxazole in an aqueous environment. Based on complementary characterizations and reactive oxygen species (ROS) quenching experiments, we proposed that boosted Co(II) regeneration by various existing S species along with formed N and O active sites in Co9S8@N–O–BC facilitated the cleavage of the O–O bond of PMS, thus resulting in a high-efficiency non-radical pathway. Consequently, Co9S8@N–O–BC/PMS achieved an outstanding degradation of sulfamethoxazole (100%) within 4 min in a wide pH range (3–11) and its turnover frequency (TOF) value was 11.96 min−1, up to 117 times higher than other reported catalysts as far as we know. The superior stability and wide applicability in sulfamethoxazole degradation with a series of inorganic ions, especially the production of very few harmless intermediates and the exceptional mineralization efficiency, also further demonstrated that the obtained catalyst possessed excellent potential for practical wastewater treatment.
研究领域:
环境催化
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水处理
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2024
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IF 5.5
Xiaofei Lei,Wenjuan Li,Kanjun Sun,Sitong Liu,Aoji Liang,Hui Peng,Guofu Ma
Transition metal sulfides embedded in co-doped porous carbon materials with nitrogen and sulfur are a promising catalyst that can effectively solve the problem of slow oxygen reduction reaction (ORR) kinetics. However, monometallic sulfides consisting of a single active component only have monofunctional catalytic activity and cannot effectively increase the rate of oxygen evolution reaction (OER), thus limiting the energy conversion efficiency of Zn-air batteries (ZAB). Herein, a unique silica template assisted in situ pyrolysis strategy is used to synthesize iron (Fe)-doped cobalt sulfide (Co 9 S 8 ) nanoparticle embedded in a honeycomb nitrogen (N), sulphur (S) co-doped porous carbon (Fe/Co 9 S 8 @NSC) electrocatalyst. The introduction of Fe increases the active component of the catalyst and further enhances the catalytic ability of Co 9 S 8 by optimizing the electronic structure through charge transfer effect. Therefore, the rich active sites of Fe/Co 9 S 8 nanoparticles anchored in N, S co-doped carbon materials with rich pore structure enable the catalysts to have good bifunctional catalytic activities of ORR and OER. In particular, the Fe/Co 9 S 8 @NSC has a high half-wave potential of 0.82 V for catalytic ORR and only needs low overpotential of 332 mV at a current density of 10 mA cm −2 for catalytic OER. In addition, the Fe/Co 9 S 8 @NSC catalyst based rechargeable ZAB also exhibits a significant specific capacity of 734 mAh g −1 and prolonged stability of 270 h, which outperforms the bulk of recently reported catalysts based on transition metal sulfides-based catalysts. This research offers a workable method for producing metal sulfides catalysts with bifunctional catalytic activity.
研究领域:
电化学
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材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2021
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IF 5.097
Jawayria Mujtaba,Le He,Hongqin Zhu,Zhijia Xiao,Gaoshan Huang,Alexander A. Solovev,Yongfeng Mei
The exploration of electrocatalysts for hydrogen evolution, that are stable and efficient in both acidic and alkaline media, is of the momentous importance in the advancement of clean energy production. This paper describes a modest, low-cost, and feasible method to synthesize hierarchical structures of Co9S8 nanoparticles cocooned in the N-doped carbon layer (Co9S8-NDCL). First, the metal–organic framework, zeolitic imidazolate framework-67, was synthesized and then morphed into Co9S8-NDCL nanocomposites by thermal treatment with sulfur powder in an argon environment. The nanocomposite electrocatalyst boosts the efficient functioning in acidic (0.5 M sulfuric acid, H2SO4, pH = 0) and basic (1 M potassium hydroxide, KOH, pH = 14) conditions toward the hydrogen evolution reaction (HER). The improved electrocatalytic activity can be ascribed to the hierarchical, porous structure and synergy of Co9S8 nanoparticles and the N-doped carbon layer. The Co9S8-NDCL nanocomposite electrode attains the current density of 20 mA.cm–2 for the HER, requiring very low overpotentials of 149 and 219 mV in 0.5 M H2SO4 and 1 M KOH aqueous solutions, respectively. It is also observed that the Co9S8-NDCL nanocomposites, even after 2000 cycles, exhibited good stability and a small Tafel slope in both media. This study presents a mark in the race of achieving low-cost and highly efficient pristine Co9S8 nanocomposites without doping of any precious metals.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
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