JOURNAL OF POWER SOURCES
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2018
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IF 6.945
Yang Hui Deng,Cui Ye,Bai Xiang Tao,Guo Chen,Qing Zhang,Hong Qun Luo,Nian Bing Li
Water electrolysis is an important way to gain pure hydrogen, while it is restricted by the sluggish kinetics of oxygen evolution reaction . To improve hydrogen production capability, it is critical to search for low-cost, earth-abundant, and superior catalytic activity materials as electrocatalysts for water oxidation . Herein, one-step chemical transformation strategy is utilized to synthesize cobalt sulfide nanosheets supported on the carbon cloth through the sulfuration process of the Co 3 O 4 precursor. The catalyst exposes abundant active sites and facilitates charge transfer, which is beneficial to water oxidation. In alkaline electrolyte , the catalyst as a non-noble metal electrode exhibits sparkly performance for water oxidation. To achieve current densities of 10 and 100 mA cm −2 , the overpotentials as low as 291 and 364 mV are demanded, respectively. Moreover, cobalt sulfide nanosheets on the carbon cloth manifest a small Tafel slope of 69 mV dec −1 and robust long-term durability. In addition, this one-step chemical transformation strategy can be utilized to synthesize cobalt selenide nanosheets on the carbon cloth, providing an orientation for developing other binder-free electrocatalysts for water oxidation.
研究领域:
材料科学
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电化学
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高影响因子
JOURNAL OF POWER SOURCES
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2018
·
IF 6.945
Bohong Chen,Zhongqing Jiang,Lingshan Zhou,Binglu Deng,Zhong-Jie Jiang,Jianlin Huang,Meilin Liu
A simple synthetic method is developed for the synthesis of CoS 2 /N, S-codoped graphene. The result shows the existence of a strong electronic coupling between CoS 2 and N, S-codoped graphene. The pyrrolic and pyridinic type nitrogen and S in the form of C-S-C in N, S-codoped graphene are found to be the anchoring sites of the CoS 2 nanoparticles . As a bifunctional catalyst , the CoS 2 /N, S-codoped graphene exhibits an oxygen reduction onset potential of 0.963 V vs. RHE and delivers an oxygen evolution overpotential of 393 mV at the current density of 10 mA cm −2 . Its oxygen reduction and evolution catalytic activities are comparable to those of the Pt/C and the state-of-art RuO 2 /C, respectively. Most impressively, the CoS 2 /N, S-codoped graphene exhibits a potential gap of 771 mV. This value is lower than those of most bifuntional catalysts reported, clearly indicating its potential use as the bifunctional catalyst to replace the noble-metal based catalysts for practical applications. Additionally, our results also suggest a great importance to prepare a single pure phase CoS 2 in improving the catalytic bifunctionality of the CoS 2 /N, S-codoped graphene. The primary Zn-air battery with CoS 2 /N, S-codoped graphene shows a higher discharge peak power density than that with Pt/C.
研究领域:
材料科学
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电化学
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催化化学
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能源材料
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纳米材料
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 9
·672
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IF 3.2
Zheng Jiahong,Wang Binyu,Zheng Xin
In the context of escalating global environmental concerns, the pursuit of highly efficient photocatalysts has emerged as a prominent research focus. In this study, PBA-derived CoS₂/FeS was anchored to b-CNTs through hydrothermal and calcination techniques to serve as a Photo-Fenton-like catalyst. The CoS 2 /FeS/b-CNTs exhibited remarkable photocatalytic Fenton activity. Under xenon lamp irradiation, an impressive degradation efficiency of 97% for RhB was achieved within a mere 210 s, concomitantly exhibiting extensive adaptability across a wide pH range of pollutant solutions. Even after three consecutive cycles and magnetic recovery separation procedures, the degradation efficiency of RhB still remains at a high degradation efficiency of 94.6%. Free radical capture experiments unambiguously indicated that singlet oxygen ( 1 O 2 ) and hydroxyl radicals (•OH) played pivotal roles as the principal active species during the degradation process. This research not only pioneers a novel avenue for the design of PBA-derived layered nanostructured photocatalysts but also holds significant potential for future applications in Photo-Fenton-like degradation of recalcitrant organic pollutants, heralding a new era in environmental remediation technology.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Wutao Wei,Xi Jia,Xuyan Qin,Zhikai Wang,Yide Zhang,Fang He,Liwei Mi
Magnesium/lithium-sulfur hybrid batteries (ML-SHBs) are considered to be the strongest candidate to replace lithium-ion batteries (LIBs) due to their high volumetric energy density and dendrite-free. In this study, S@FeS 2 /CoS 2 was prepared on the basis of a hollow, eggshell-shaped construction by using the less-liquid method. In this method, the reactants carry water of crystallization during the reaction to provide a liquid environment, and the metal ions on the surface of the droplets promote the formation of S@FeS 2 /CoS 2 . The configuration of the eggshell facilitates the generation of additional reaction interfaces, thereby expediting the interaction with the electrolyte and facilitating transport processes. This structure promotes efficient charge transfer and accelerates the transport rate. By implementing strategies such as heterostructure building and bimetallic doping, the controllable construction of the morphological structure can be realized. The induced effect of heterostructured interfaces can be excited within the nanocrystals to form an electric field, which effectively reduces the ion diffusion barrier and synchronously enhances the interfacial electron transfer efficiency by modulating the electronic behavior. The discharge specific capacity of the cell was found to be 1096.73 mAh g −1 at a current density of 200 mA g −1 , exhibiting a high rate capacity. The Coulombic efficiency remained at 99.8 % after 100 cycles at a current density of 500 mA g −1 .
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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
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DOI
ELECTROCHIMICA ACTA
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2019
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IF 5.383
Xiang He,Linnan Bi,Yao Li,Chenggang Xu,Dunmin Lin
Much attention has been paid to the Cobalt-based sulfides in recent years due to their high specific capacity and strong catalytic activity in the field of sodium-ion batteries (SIBs). Nevertheless, the poor cycling stability and low rate capability have hindered their practical applications. Herein, an effective strategy for the rational design of CoS 2 nanoparticles embedded in the graphitic structured N-doped porous carbon spheres interlinked by the reduced graphene oxide (rGO) nanosheets (rGO-CoS 2 -GNCSs) is proposed. The interconnected multidimensional nanostructure constructed by CoS 2 nanoparticles, graphitic structured N-doped porous carbon spheres and rGO nanosheets can provide a fast transfer pathway for electrons and electrolyte ions, which helps enhance the electric conductivity of the material and facilitate the reaction kinetics in SIBs. Moreover, benefiting from this unique microstructure, the change of the volume during sodiation/desodiation can be effectively alleviated and the stability of the architectural morphology can be enhanced. As a result, the rGO-CoS 2 -GNCSs used as the anode of SIBs presents an impressive electrochemical performance at a cut-off voltage of 0.4–2.9 V in the electrolyte of 1.0 M NaCF 3 SO 3 in diglyme , delivering a high reversible capacity of 523.9 mAh g −1 at 100 mA g −1 after 150 cycles, an excellent rate capability of 423.3 mAh g −1 at 2 A g −1 and extraordinary long-term cycling stability of 465.9 mAh g −1 at 500 mA g −1 after 600 cycles and 412.2 mAh g −1 at 1 A g −1 after 400 cycles. This study puts forward a promising strategy for the rational design of anode materials for high-efficiency sodium storage by interconnecting transition metal compounds , two-dimensional materials and nanocarbon to form multidimensional nanohybrids .
研究领域:
材料科学
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能源存储
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 17
·14121-14133
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IF 2.779
Xiong Yaping,Wu Ke,Hong Shouyu,Jin Luqiao,Zhang Ze,Zhu Lingfeng,Huang Mouzhi,Yang Zhenyu,Cai Jianxin
High-efficiency electrocatalysts for Li–S batteries have great significance for improving their electrochemical performance and cycle stability. Here, a hollow CoS 2 nanosphere as a novel electrocatalyst for the cathode host material of high-performance Li–S batteries was obtained by a two-step strategy of solvothermal and sulfuration. Different from the traditional light carbon materials, the tap density of CoS 2 @S composite material has reached 1.17 g cm −3 . The high tap density of CoS 2 @S nanospheres composite guarantees the high volume energy density. Specifically, a hollow nanosphere has a large internal space which provides the possibility for a large load of the active material (80.66 wt%). Besides, electrochemical kinetics evaluation indicated CoS 2 nanospheres are beneficial for promoting Li–S electrochemical heterogeneous conversion and accelerating the diffusion of lithium ions in the cathode, both of which can help to keep the battery cycle stable and long life. Moreover, the chemical interaction between Co ions and polysulfides can effectively anchor the adsorbed polysulfides, which can help immobilize sulfur species and restrain the shuttle effect. Such a rationally prepared CoS 2 nanosphere is significant for promoting the electrochemical performance of the sulfur cathode due to high-volume energy density and rapid kinetic transformation promoting action. As a result, the CoS 2 @S composite exhibits high volume energy density and excellent performance under high sulfur load (4.8 mg cm −2 ) and low E / S ratio (electrolyte/sulfur = 10 μL mg −1 ) based on of the composite as cathode host materials. This work provides a new idea for the exploration of cathode host materials with high volume energy density and high electrochemical performance for lithium–sulfur batteries.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Yang Zhan,Shun-zhi Yu,Shao-hua Luo,Jian Feng,Qing Wang
Transition-metal sulfides (TMS) are one of the most promising cathode catalysts for Li–O2 batteries (LOBs) owing to their excellent stabilities and inherent metallicity. In this work, a highly efficient mode has been used to synthesize Co@CNTs [pyrolysis products of metal–organic frameworks (MOFs)]-derived CoS2(CoS)@NC. Benefiting from the special yolk–shell hierarchical porous morphology, the existence of Co–N bonds, and dual-function catalytic activity (ORR/OER) of the open metal sites contributed by MOFs, the CoS2@NC-400/AB electrode illustrated excellent charge–discharge cycling for up to nearly 100 times at a current density of 0.1 mA cm–2 under a limited capacity of 500 mA h g–1 (based on the total weight of CoS2@NC and AB) with a high discharge voltage plateau and a low charge cut-off voltage. Meanwhile, the average transferred electron number (n) is around 3.7 per O2 molecule for CoS2@NC-400, which is the chief approach for a four-electron pathway of the ORR under alkaline media. Therefore, we believe that the novel CoS2@NC-400/AB electrode could serve as an excellent catalyst in the LOBs.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Jian Liu,Ying-Ge Xu,Ling-Bin Kong
Metal sulfide is the most promising anode material for sodium storage devices due to its high theoretical capacity and low cost. However, the practical application of metal sulfide is largely hindered by huge capacity fading during the sodiation/desodiation process. Here mixed bimetallic sulfides grown on reduced graphene oxide (MoS 2 /CoS 2 -RGO) are prepared via a facile hydrothermal method. MoS 2 /CoS 2 -RGO displays a unique 2D structure which provides large specific surface area for pseudocapacitive charge storage, polyvalent ion reaction for ultrahigh capacity, and a heterostructure to high Na-ion diffusion rate. The optimized MoS 2 /CoS 2 -RGO shows a considerable reversible capacity of 593.6 mA h g −1 at 100 mA g −1 over 50 cycles and a high rate capability of 215.8 mA h g −1 even at a high specific current of 5000 mA g −1 . A reaction kinetics and galvanostatic intermittent titration technique analysis indicates that MoS 2 /CoS 2 -RGO possesses fast pseudocapacitive charge storage and high Na-ion diffusion rate, benefiting the kinetics balance between anode and cathode. With this special structure, SICs containing the anode deliver a high specific energy of 152.98 W h kg −1 at 562.5 W kg −1 . Similarly, the SIB exhibits a good capacities of 64 mA h g −1 at the high rates of 5C over 100 cycles.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
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DOI
高影响因子
ACS Applied Energy Materials
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2026
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IF 5.5
Tingting Yang,Yufei Li,Liwei Lu,Jianghua Du,Xin Guo
Achieving efficient and stable solar-driven photocatalytic water splitting for hydrogen production requires simultaneously overcoming the issues of insufficient charge separation at the microscopic scale and difficult catalyst recovery at the macroscopic scale. In this study, an S-Scheme ZnCdS/CoS2 heterojunction catalyst was integrated into a PVDF/PVP/TiO2 electrospun fiber membrane via electrospinning technology, constructing a catalytic material that combines microscopic heterojunctions with a macroscopic membrane structure to realize synergistic enhancement between the microscopic heterojunction and the macroscopic assembly. At the microscopic level, the S-scheme heterojunction promotes the separation of photogenerated charge carriers through an internal electric field, thereby increasing the hydrogen production rate to 36.47 μmol/mg, which is 5 times higher than that of pure ZnCdS catalyst. At the macroscopic level, the PVDF/PVP/TiO2 electrospun fiber membrane provides a stable support for the ZnCdS/CoS2 S-scheme heterojunction, increasing active sites while enabling easy recovery. The hydrogen production efficiency of this fiber membrane is 2.3 times that of the powdered ZnCdS/CoS2 heterojunction, with an activity retention rate of 90.7% after repeated use. This study’s strategy of combining heterojunctions with electrospinning offers a feasible approach to simultaneously enhance the hydrogen production efficiency, stability, and recyclability of photocatalytic systems.
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高影响因子
ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Jianmei Yang,Qianhong Chen,Ruo Yuan,Yun Xiang
Dysregulation expression of microphthalmia-associated transcription factor (MITF), a principal melanocyte controller, has been closely linked to melanin-associated disorders, and developing highly sensitive MITF detection methods is therefore imperative for early diagnosis and prognosis monitoring of melanoma-associated symptoms. This work describes an ultrasensitive electrochemical MITF biosensor on the basis of highly catalytic FeS2@CoS2 core/shell nanocubes and target recycling/bipedal DNA walker signal amplification cascades. The FeS2@CoS2 nanocubes are prepared with the one-step simple hydrothermal means, followed by their modification on the electrode, electrodeposition of AuNPs, and immobilization of DNA capture probes to prepare the sensing interface. Target MITF molecules bind and protect the dsDNA recognition duplexes from digestion by exonuclease III (Exo III) to trigger subsequent target recycling/bipedal DNA walker reaction cascades. This leads to confining a lot of ferrocene (Fc)-modified DNAs to the electrode sensing surface. FeS2@CoS2-mediated catalytic oxidation of Fc thus generates significantly amplified current signals, achieving MITF detection across 0.5 ∼ 1000 pM with the remarkable 0.12 pM detection limit. Moreover, such a biosensor shows excellent selectivity and can realize trace MITF detection in cancer cell nuclear extracts, demonstrating its potential as a universal platform for trace transcription factor detection.
研究领域:
电分析化学
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生物传感器与生物电子学
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纳米材料
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分子诊断
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基因调控
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癌症标志物
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zi-Ang Li,Sheng-Guang Wang,Pei-Pei Chen,Jia-Ting Lei,Yun-Lei Hou,Jing-Zhou Chen,Dong-Lin Zhao
Metal–organic framework materials can be converted into carbon-based nanoporous materials by pyrolysis, which have a wide range of applications in energy storage. Here, we design special interface engineering to combine the carbon skeleton and nitrogen-doped carbon nanotubes (CNTs) with the transition metal compounds (TMCs) well, which mitigates the bulk effect of the TMCs and improves the conductivity of the electrodes. Zeolitic imidazolate framework-67 is used as a precursor to form a carbon skeleton and a large number of nitrogen-doped CNTs by pyrolysis followed by the in situ formation of Co3O4 and CoS2, and finally, Co3O4@CNTs and CoS2@CNTs are synthesized. The obtained anode electrodes exhibit a long cycle life and high-rate properties. In lithium-ion batteries (LIBs), Co3O4@CNTs have a high capacity of 581 mAh g–1 at a high current of 5 A g–1, and their reversible capacity is still 1037.6 mAh g–1 after 200 cycles at 1 A g–1. In sodium-ion batteries (SIBs), CoS2@CNTs have a capacity of 859.9 mAh g–1 at 0.1 A g–1 and can be retained at 801.2 mAh g–1 after 50 cycles. The unique interface engineering and excellent electrochemical properties make them ideal anode materials for high-rate, long-life LIBs and SIBs.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）