NiS Nanoparticles Research Articles

Synthesis and Characterization of NiO, Ni(OH)2, and NiS Nanoparticles as Effective Electrode Materials for Supercapacitors

Synthesis and Characterization of NiO, Ni(OH)2, and NiS Nanoparticles as Effective Electrode Materials for Supercapacitors

Hydrogen production via alkaline seawater electrolysis using iron-doped nickel diselenide as an efficient bifunctional electrocatalyst

Green hydrogen production via seawater electrolysis is a promising pathway towards sustainable energy future. However, seawater splitting is hindered by the low stability and selectivity of electrocatalysts towards hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and faces severe electrode corrosion. Herein, we report the synthesis of highly active and durable Fe-doped nickel diselenide (Fe–NiSe2) nanoparticles supported on nickel foam as bifunctional electrocatalysts for efficient alkaline seawater electrolysis via an electrodeposition method followed by low-temperature annealing. The electrocatalytic properties of as-prepared Fe–NiSe2 toward HER and OER are investigated in different electrolytes. The optimized electrocatalyst (20-Fe-NiSe2) shows very low overpotential of 92 and 96 mV in alkaline (1.0 M KOH) and simulated seawater (1.0 M KOH + 0.5 M NaCl) electrolytes, respectively, to reach the current density of 10 mA cm−2 for HER. For the OER, 20-Fe-NiSe2 exhibits an overpotential of 333 and 311 mV in alkaline and simulated seawater electrolytes, respectively, to attain a current density of 100 mA cm−2. Further, full-cell studies are carried out with 20-Fe-NiSe2 as bifunctional electrocatalysts, which requires cell potential of 1.83 V and 1.81 V to deliver a current density of 100 mA cm−2 in alkaline and simulated seawater electrolytes, respectively. Additionally, the electrode shows tremendous potential for use in alkaline seawater electrolysis with stability over 100 h, at a current density of 100 mA cm−2, which is achieved at a low cell voltage of 1.87 V. The present work offers a simple, efficient, and cost-effective method for the development of heterogeneous Fe-doped nickel diselenide electrocatalysts for seawater electrocatalysis.

Nickel sulfide nanoparticles decorated on carbon spheres derived from Verbena officinalis for high-performance asymmetric all-solid-state flexible supercapacitors

The crafting and development of electrode materials possessing extensive energy storage capacities, alongside their adherence to environmental and economic principles, along with their outstanding capacitive behaviors, stand as pivotal elements in propelling the technological progress of supercapacitors. In this study, we utilized discarded Verbena officinalis (VOCs) as a carbon substrate and successfully synthesized porous hollow carbon spheres through an in-situ hydrothermal method, subsequently depositing NiS nanoparticles to form a shell-like structured material. The optimized VOCs/NiS-3 composite material exhibited an exceptional specific capacitance of 202.8 mAh g−1 at a current density of 1.0 A g−1; it maintained 71 % of its capacitance even at a high current density of 10 A g−1 (144.2 mAh g−1). After enduring 10,000 charge-discharge iterations, the preservation of charge storage capacity was 81.7 %, highlighting the material's outstanding performance in terms of rapid charge-discharge rates and enduring stability. Furthermore, within a PVA/KOH gel electrolyte, we fabricated an asymmetric all-solid-state supercapacitor device that delivered an energy density of 32.58 Wh k g−1 at a power density of 800 W k g−1. The device sustained a capacitance loss rate of 9.9 % and a coulombic efficiency of 96.8 % after 5000 cycles. Even after 3000 repeated bending at 120°, the capacitance retention reached 88.3 %, indicating the device's exceptional specific capacitance, flexibility and longevity. This research offers a renewable and waste-resource recycling design strategy for synthesizing outstanding-performance, flexible, all-solid-state supercapacitor electrode materials with NiS deposited on discarded biomass carbon, unveiling considerable potential for enhancing energy storage efficiency.

NiSe nanoparticles anchored on hollow carbon nanofibers with enhanced rate capability and prolonged cycling durability for sodium-ion batteries

NiSe nanoparticles anchored on hollow carbon nanofibers with enhanced rate capability and prolonged cycling durability for sodium-ion batteries

Hydrothermal Synthesis of β-NiS Nanoparticles and Their Applications in High-Performance Hybrid Supercapacitors.

In this work, β-NiS nanoparticles (NPs) were efficiently prepared by a straightforward hydrothermal process. The difference in morphology between these NiS NPs was produced by adding different amounts of thiourea, and the corresponding products were denoted as NiS-15 and NiS-5. Through electrochemical tests, the specific capacity (Cs) of NiS-15 was determined to be 638.34 C g-1 at 1 A g-1, compared to 558.17 C g-1 for NiS-5. To explore the practical application potential of such β-NiS NPs in supercapacitors, a hybrid supercapacitor (HSC) device was assembled with activated carbon (AC) as an anode. Benefitting from the high capacity of the NiS cathode and the large voltage window of the device, the NiS-15//AC HSC showed a high energy density (Ed) of 43.57 W h kg-1 at 936.92 W kg-1, and the NiS-5//AC HSC provided an inferior Ed of 37.89 W h kg-1 at 954.79 W kg-1. Both HSCs showed excellent cycling performance over 6000 cycles at 10 A g-1. The experimental findings suggest that both NiS-15 and NiS-5 in this study can serve as potential cathodes for high-performance supercapacitors. This current synthesis method is simple and can be extended to the preparation of other transition metal sulfide (TMS)-based electrode materials with exceptional electrochemical properties.

Novel anatase-rutile TiO2 dual-phase coupling with NiS2 nanoparticles wrapped in carbon nanotubes for enhanced lithium ion storage

As a promising anode with non-obvious volume change during the intercalation/extraction of Li+ for advanced lithium-ion batteries (LIBs), the application of TiO2 is hindered by the poor electronic/ionic conductivity. Herein, a coherent strategy is carried out to obtain anatase-rutile TiO2 dual-phase composited with NiS2 nanoparticles confined in carbon nanotubes (A/R-TiO2/NiS2/CNTs) derived from Ti-MOF. The inclusion of NiS2 can significantly enhance the capacity of the composite. Simultaneously, the biphasic anatase-rutile TiO2 can induce plenty of oxygen vacancies to expedite the diffusion of lithium ions. The transfer of electrons can be accelerated by the surrounding carbon nanotubes with outstanding conductivity, which also enhance the structural stability of the whole composite. Thanks to the above appealing properties, the A/R-TiO2/NiS2/CNTs electrode delivers excellent rate capacity of 707.4 mA h g−1 at 0.1 A g−1 and 131.9 mA h g−1 at 5 A g−1 and displays 401.5 mA h g−1 at 0.5 A g−1 after 600 cycles.

Charge Redistribution in Nise2/Mos2 n–n Heterojunction Towards the Photoelectrocatalytic Degradation of Ciprofloxacin

AbstractThis study reports the photoelectrocatalytic (PEC) activity of a n–n heterojunction comprising MoS2 and NiSe2. The synthesis of the composite was achieved through a facile solvothermal method, yielding an exfoliated MoS2 layered sheet loaded with NiSe2 nanoparticles. Under visible light radiation and an external electric field, the obtained composite NiSe2/MoS2 exhibited enhanced catalytic activity for ciprofloxacin (CIP) degradation. The NiSe2/MoS2 heterojunction achieved about 78 % degradation efficiency with a first‐order kinetic rate of 0.0111 min−1, compared to 38 % efficiency and a first‐order kinetic rate of 0.0044 min−1 observed for MoS2. The NiSe2/MoS2 heterojunction was more advantageous due to the synergy of charge carrier induction by visible light radiation and improved charge carrier separation induced by the external electric field. The formation of n–n heterojunction at the interface of the two materials resulted in charge redistribution in the materials, with a simultaneous realignment of the band structure to achieve Fermi energy equilibration. The primary reactive species responsible for CIP degradation was identified as the photo‐induced h+. Furthermore, the catalyst exhibited high stability and reusability, with no significant reduction in activity observed after five experimental cycles. This study reveals the potential of exploring the synergy between the photocatalytic and electrocatalytic processes in removing harmful pharmaceutical compounds from water.

Manipulating polarization attenuation in NbS2–NiS2 nanoflowers through homogeneous heterophase interface engineering toward microwave absorption with shifted frequency bands

Homogeneous heterogeneous (heterophase) interfaces regulated with low energy barriers have a fast response to applied electric fields and could provide a unique interfacial polarization, which facilitate the transport of electrons across the substrate. Such regulation on the interfaces is effective in modulating electromagnetic wave absorbing materials. Herein, we construct NbS2–NiS2 heterostructures with NiS2 nanoparticles uniformly grown in NbS2 hollow nanospheres, and such particular structure enhances the interfacial polarization. The strong electron transfer at the interface promotes electron transport throughout the material, which results in less scattering, promotes conduct ion loss and dielectric polarization relaxation, improves dielectric loss, and results in a good impedance matching of the material. Consequently, the absorbing band may be successful tuned. By regulating the amount of NiS2, the heterogeneous interface is finely alternated so that the overall wave-absorbing performance is shifted to lower frequencies. With a NiS2 content of 15 ​wt% and an absorber thickness of 1.84 ​mm, the minimum reflection loss at 14.56 ​GHz is −53.1 ​dB, and the effective absorption bandwidth is 5.04 ​GHz; more importantly, the minimum reflection loss in different bands is −20 dB, and the microwave energy absorption rate reaches 99% when the thickness is about 1.5–4.5 ​mm. This work demonstrates the construction of homogeneous heterostructures is effective in improving the electromagnetic absorption properties, providing guideline for the synthesis of highly efficient electromagnetic absorbing materials.

Modulation of catalyst interfacial electric field and charge transfer promotes NiS-modified CoWO4/ZnIn2S4 S-scheme heterojunction for efficient photocatalytic hydrogen evolution

The strategic post-synthetic modification of engineered S-scheme heterojunctions represents a potent and manipulable approach to significantly enhance photocatalytic activity. This study details the synthesis of innovative photocatalysts via the deposition of NiS nanoparticles onto S-scheme heterojunctions of CoWO4/ZnIn2S4 (CWO/ZIS-NiS), facilitated by solvothermal and photochemical methodologies. Under visible light irradiation, the hydrogen production rate of CWO/ZIS-NiS was 22.304 mmol g−1 h−1, which 14.7 times higher than that of the ZnIn2S4. XPS, EPR, SPV and DFT calculations were used to analyze the charge transfer path and the reasons for the performance improvement of the catalyst. The construction of the S-scheme CoWO4/ZnIn2S4 heterojunction, along with NiS modification to enhance the interfacial electric field (IEF) and act as a reaction center, was identified as the primary reason for the enhanced hydrogen production activity. This work provides guidance for the design of efficient photocatalytic systems using the synergistic effect between cocatalysts and S-scheme heterojunctions.

NiSe2 nanoparticles modified ZnIn2S4 microspheres for boosting photocatalytic hydrogen evolution under visible light irradiation

A well-designed composite based on semiconductor materials can effectively reduce the recombination of photo-generated carriers in photocatalysts by establishing efficient charge transfer channels, which enhances the activity of photocatalytic hydrogen evolution for water splitting. Herein, a ZnIn2S4/NiSe2 composite with NiSe2 nanoparticles tightly anchored on the nanosheets-assembled microspheres ZnIn2S4 was elaborated and successfully synthesized by a hot-injection method followed by a successive solvothermal method. The synergistic effects and close contact interface between ZnIn2S4 and NiSe2 facilitated charge migration. Under visible light irradiation, the optimal ratio of ZnIn2S4/NiSe2 composite achieved an outstanding hydrogen evolution rate of 3060 µmol g−1 h−1 (nearly 12.6 times of unmodified ZnIn2S4) and exhibited superior stability (no apparent decrease within 20 h) in the presence of a sacrificial agent (triethanolamine). Additionally, various characterizations revealed that the recombination of photo-generated carriers was effectively suppressed, visible-light absorption was significantly enhanced, and interface charge transfer was accelerated, thus endowing the ZnIn2S4/NiSe2 composite with superior photocatalytic activity. This research provides illuminating insights into using the non-noble metal-based catalyst NiSe2 as an effective co-catalyst, significantly improving photocatalytic performance and holding great potential in alleviating energy shortages and environmental pollution problems.

The co-catalyst effect of NiSe2 supporter: Boost photocatalytic hydrogen evolution efficiency of TiO2

Supporters play an extremely crucial role in the fabrication of highly dispersible catalysts. However, the supporter can only play the role of hosting the main catalyst and does not directly participate in the catalytic reaction as an active site. Herein, the NiSe2 nanoparticles were prepared by a selenide method using NiC2O4 as precursors, and then employed as supporter and cocatlyst to construct NiSe2/TiO2 hybrid by a facile mechanical stirring. The NiSe2/TiO2 hybrid with the optimal ratio of NiSe2 (15 wt%) manifested significantly improved the amount of photocatalytic H2 evolution of nearly 30000 μmol/g, which is 39 times in comparison to pristine TiO2 (756 μmol/g). The mechanism of performance enhancement was fully investigated and supposed that NiSe2 supporter can enhance dispersibility of TiO2, which increased the stacked-type pore size and pore volume by 2.5 and 10 times, respectively. Additionally, NiSe2 can improve the light absorption capacity of the catalyst system and broaden the light absorption range to the visible light region. What’ more, the higher work function of NiSe2 facilitates the formation of electron sink, which leading to the effectively separation of photo-generated carriers. The promising outcomes of this study on NiSe2/TiO2 hybrid highlight the dual role of transition metals as co-catalyst and supporter in catalytic processes, offering valuable insights for further exploration of the co-catalytic capabilities of supporters.

Modification of NiSe2 Nanoparticles by ZIF-8-Derived NC for Boosting H2O2 Production from Electrochemical Oxygen Reduction in Acidic Media

The two-electron oxygen reduction reaction (2e− ORR) has emerged as an attractive alternative for H2O2 production. Developing efficient earth-abundant transition metal electrocatalysts and reaction mechanism exploration for H2O2 production are important but remain challenging. Herein, a nitrogen-doped carbon-coated NiSe2 (NiSe2@NC) electrocatalyst was prepared by successive annealing treatment. Benefiting from the synergistic effect between the NiSe2 nanoparticles and NC, the 2e− ORR activity, selectivity, and stability of NiSe2@NC in 0.1 M HClO4 was greatly enhanced, with the yield of H2O2 being 4.4 times that of the bare NiSe2 nanoparticles. The in situ Raman spectra and density functional theory (DFT) calculation revealed that the presence of NC was beneficial for regulating the electronic state of NiSe2 and optimizing the adsorption free energy of *OOH, which could enhance the adsorption of O2, stabilize the O-O bond, and boost the production of H2O2. This work provides an effective strategy to improve the performance of the transition metal chalcogenide for 2e− ORR to H2O2.

Ultrafast-Loaded Nickel Sulfide on Vertical Graphene Enabled by Joule Heating for Enhanced Lithium Metal Batteries.

The design and fabrication of a lithiophilic skeleton arehighly important for constructing advanced Li metal anodes. In this work, a new lithiophilic skeleton is reported by planting metal sulfides (e.g., Ni3S2) on vertical graphene (VG) via a facile ultrafast Joule heating (UJH) method, which facilitates the homogeneous distribution of lithiophilic sites on carbon cloth (CC) supported VG substrate with firm bonding. Ni3S2 nanoparticles are homogeneously anchored on the optimized skeleton as CC/VG@Ni3S2, which ensures high conductivity and uniform deposition of Li metal with non-dendrites. By means of systematic electrochemical characterizations, the symmetric cells coupled with CC/VG@Ni3S2 deliver a steady long-term cycle within 14mV overpotential for 1800h (900 cycles) at 1mA cm-2 and 1 mAh cm-2. Meanwhile, the designed CC/VG@Ni3S2-Li||LFP full cell shows notable electrochemical performance with a capacity retention of 92.44% at 0.5 C after 500 cycles and exceptional rate performance. This novel synthesis strategy for metal sulfides on hierarchical carbon-based materials sheds new light on the development of high-performance lithium metal batteries (LMBs).

N-doped 3D carbon encapsulating nickel selenide nanoarchitecture with cation defect engineering: An ultrafast and long-life anode for sodium-ion batteries

Transition metal chalcogenides (TMCs) hold great potential for sodium-ion batteries (SIBs) owing to their multielectron conversion reactions, yet face challenges of poor intrinsic conductivity, sluggish diffusion kinetics, severe phase transitions, and structural collapse during cycling. Herein, a self-templating strategy is proposed for the synthesis of a class of metal cobalt-doped NiSe nanoparticles confined within three-dimensional (3D) N-doped macroporous carbon matrix nanohybrids (Co-NiSe/NMC). The cation defect engineering within the developed Co-NiSe and 3D N-doped carbon plays a crucial role in enhancing intrinsic conductivity, reinforcing structural stability, and reducing the barrier to sodium ion diffusion, which are verified by a series of electrochemical kinetic analyses and density functional theory calculations. Significantly, such cation defect engineering not only reduces overpotential but also accelerates conversion reaction kinetics, ensuring both exceptional high-rate capability and extended durability. Consequently, the optimally engineered Co-NiSe/NMC demonstrates a remarkable rate performance, delivering 390 mAh g−1 at 10 A g−1. Moreover, it exhibits an unprecedented lifespan, maintaining a remarkable capacity of 403 mAh g−1 after 1400 cycles and 318 mAh g−1 after 4000 cycles, even at high rates of 1.0 and 2.0 A g−1, respectively. This work marks a substantial advancement in achieving both high performance and prolonged cycle life in sodium-ion batteries.

Stabilizing NiS2 on Conductive Component via Electrostatic Self‐assembly and Covalent Bond Strategy for Promoting Sodium Storage

AbstractThe high theoretical capacities and excellent redox activities motivate transitional metal sulfides (TMSs) to serve as promising anode materials for sodium‐ion batteries. However, TMSs would experience low electronic conductivity as well as notorious polysulfides dissolution and shuttle effect during charge/discharge processes, which leads to unsatisfactory rate capability and cycling stability. Herein, TMSs‐based anode materials with NiS2 nanoparticles tightly anchoring on nitrogen‐doped graphene (NiS2/NG) via the Ni–N covalent bond have been developed through an electrostatic self‐assembly approach between exfoliated positively charged layered double hydroxide and negatively charged graphene oxide nanosheets, followed by a sulfidation process. The strong coupling between conductive and active components enables NiS2/NG to possess good structural integrity, high ion/electron conductivity, and strong polysulfides adsorption capability, ensuring fast reaction kinetics and energetically stable performance. In consequence, the NiS2/NG delivers a high capacity of 664 mAh g−1 at 0.1 A g−1, good rate performance of 545 mAh g−1 at 2 A g−1, and excellent cycling stability with a retained capacity of 589.9 mAh g−1 after 1200 cycles at 0.5 A g−1, among the best results of reported TMSs‐based anodes. The study provides an effective strategy to design heterostructured materials with strong coupling interaction for high‐efficient‐stable sodium storage.

Nanosheets-assembled hollow N-doped carbon nanospheres encapsulated with ultrasmall NiSe nanoparticles for electrocatalytic hydrogen evolution

Developing highly active and stably non-precious metal electrocatalysts for hydrogen production in alkaline conditions is of paramount importance to hydrogen economy. Herein, nanosheet-assembled hollow nitrogen-doped carbon nanospheres confined with ultrasmall NiSe nanoparticles (NiSe@NC) are synthesized by employing a SiO2 template-assisted approach. As expected, the as-prepared NiSe@NC electrocatalyst delivers an overpotential of 169 mV at the current density of 10 mA/cm2 without iR-correction, and sustains at least 80 h for continuous operation, far outperforming the NiSe-p catalyst in 1 M KOH medium toward hydrogen evolution reaction (HER). The appealing HER performance is mainly ascribed to the synergy effect between hollow nitrogen-doped carbon and highly active NiSe nanoparticles, which improves catalytically active sites, expedites electron transfer rate and optimizes the electronic structure of NiSe@NC nanomaterial. More strikingly, this study presents the feasible insights for constructing robust cost-effective electrocatalysts towards efficient HER in harsh alkaline media.

Facile synthesis of Cu2S-NiS2 nanocomposite with highly active visible light photocatalyst for dye removal and biological evaluation

Earth abundant metal sulphides such as Cu2S and NiS2 are potential materials to be used as photocatalysts because of their advantageous optical and biological aspects. In this research, a low-cost, high-speed, one step combustion production of novel Cu2S-NiS2 nanocomposite (NCs) was successfully developed. They are integrally characterized and evaluated as photocatalysts for dye degradation and biological uses. The synthesized NCs were characterized by XRD, FTIR, SEM, TEM, EDAX, UV–Visible and PL. XRD data is well matched with JCPDS 03–1071 and 73–574 which correspond to Cu2S and NiS2 nanoparticles (NPs) respectively. FT-IR spectrum exhibits the existence of metal-sulphur bonding in Cu2S-NiS2 NCs. The optical energy band gap of Cu2S-NiS2 NCs was found 2.30 eV. Under visible light irradiation, the photocatalytic activity of Cu2S-NiS2 NCs on rose bengal dye was investigated. Cu2S-NiS2 NCs is more efficient photocatalyst than individual metal sulphide NPs. Also, an important aspect of this study was the exploration of the antimicrobial, antioxidant and antihemolytic properties of pure NPs and Cu2S-NiS2 NCs. The results from the biological screening exposed the fact that the Cu2S-NiS2 NCs demonstrated significantly higher pharmacological activities in comparison to pure NPs.

Synergistic augmentation and rapid elimination of ciprofloxacin using a novel mesoporous nickel sulfide-adorned bismuth tungstate S-scheme heterojunction

Pharmaceutical contamination hazardously threatens the health of human beings and the ecological system. Heterogeneous photocatalysis provides a marvelous and effective strategy for directly breaking down these harmful contaminants during visible light exposure in the presence of a semiconducting photocatalyst. Even so, this approach is considerably challenged by inadequate photo-harvesting and swift recombination rates for photo-induced charge carriers of traditional photocatalysts. In this investigation, a novel NiS/Bi2WO6 step (S)-scheme heterostructure photocatalyst was constructed by surfactant-assisted sol-gel methodology and applied for ciprofloxacin (CIPF) oxidation beneath visible-light illumination. The Bi2WO6 catalyst was successfully decorated with diverse contents of NiS nanoparticles (NPs) to investigate their impact on the overall characteristics and catalytic performance of bismuth tungstate. The optimal photocatalyst, 9.0 wt% NiS/Bi2WO6, revealed astounding efficacy in CIPF elimination from water solution, with 100.0% degradation efficacy within 90-min visible light exposure. This novel photocatalyst achieved a degradation rate of ca. 0.966 μmol min−1, surpassing that attained employing bare Bi2WO6 by ∼8.0 times. Moreover, 9.0 wt% NiS/Bi2WO6 heterostructure has exhibited superior strength and stability with 98.0% sustainability. This outstanding improvement in photocatalytic proficiency and performance with high sustainability could be attributed to the enhanced transfer and separation rates of light-induced carriers occurring through the S-scheme route. This novel heterojunction design also enlarged the visible light-harvesting responsiveness. This study offers new insights into the design and building of promising S-scheme heterostructure photocatalytic systems for highly efficient solar conversion applications.

NiSe2/CoSe2 heterostructure nanoparticles anchoring on graphene for enhanced Li-ions storage

Selenide anodes have been extensively studied due to their exceptional electrochemical performance in lithium-ion batteries (LIBs). However, selenides suffer from inadequate specific capacity and high mechanical stress/strain resulting from significant volume changes during cycling. This leads to a rapid reduction in capacity and reversibility, which limits their practical application. Nanoscale bimetallic heterostructure selenides can effectively reduce the lattice vibration induced by lithiation/delithiation and improve the lithium storage capacity and cycle life. This study describes the preparation of NiSe2 and CoSe2 nanoparticles anchored on graphene (NiSe2/CoSe2/Graphene) using freeze-drying and thermal selenization methods. The graphene, selenide particles, and electric field between heterostructure interfaces significantly enhance electrical conductivity, provide active species storage sites, and improve lithium-ion adsorption ability, resulting in high storage capacity and excellent cycling stability. The NiSe2/CoSe2/Graphene composite exhibited a specific capacity of 929.6 mAh g−1 after 320 cycles at a current density of 100 mA g−1. Even at a high current density of 1000 mA g−1, the composite was stably cycled for 1250 cycles with a continuous increase in specific capacity. This study provides valuable insights into the use of bimetallic selenides for improved lithium storage.

Binary transition metal sulfides MoS2–NiS2 anchored on biomass-derived carbon for improved performance of lithium–sulfur batteries

The poor electrical conductivity of sulfur and electrochemically active solid-state products (Li2Sn, n = 1–3), and the shuttle effect have led to the low cycling stability of lithium-sulfur batteries and the low utilization of the sulfur cathode. In this work, 3D porous biomass-derived carbon material (KMC) was prepared from Miscanthus sinensis by KOH activation. The transition metal sulfide with excellent adsorption and catalytic characteristics was effectively combined with the conductive porous biomass-derived carbon material, and a KMC/MoS2−NiS2 composite material was obtained. The product was characterized by field emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy. Results show that MoS2−NiS2 nanoparticles can be uniformly distributed on the porous carbon material. Electrochemical measurements reveal that with an initial specific capacity of 1292 mA h g–1 at a current density of 0.1 C. After 400 cycles at 0.5 C, the specific capacity of KMC/MoS2−NiS2/S decays from 1007 to 814 mA h g–1. Thus, the capacity decay rate per cycle is about 0.054 %. This strategy provides a new idea for developing lithium−sulfur batteries with attractive performance.