Materials Today Energy
·
2021
·
IF 7.311
Yutong Li,Tianyi Dai,Quanxuan Wu,Xingyou Lang,Lijun Zhao,Qing Jiang
NiFe layered double hydroxide (LDH)-based materials arouse great attention because of their outstanding catalytic activity for oxygen evolution reaction (OER) under alkaline conditions. However, its catalytic activity for hydrogen evolution reaction (HER) under alkaline conditions is relatively poor. Herein, to improve the HER catalytic activity of NiFe LDH under alkaline conditions, we design a heterostructure of NiS and NiS 2 on NiFe LDH and successfully achieve Mo element doping . The catalyst named NiFe-LDH@Mo–NiS–NiS 2 /NF possesses a three-dimensional nano-flower-like structure and shows an outstanding catalytic performance for both HER and OER. Specifically, in 1 M KOH solution, it requires the low overpotentials of 261 and 120 mV to achieve the current density of 50 and 10 mA cm −2 for OER and HER, respectively. Simultaneously, when NiFe-LDH@Mo–NiS 2 –NiS/NF is used as the bifunctional catalysts, it only needs a low voltage of 1.63 V to achieve a current density of 10 mA cm −2 . The outstanding catalytic performance is attributed to its special heterostructure and the synergy between Mo and NiS x , resulting in comparability with most reported non-noble metal-based catalysts. The doping of metal elements and the construction of heterostructures provide new ideas for the structure regulation and performance improvement of bifunctional electrocatalysts .
研究领域:
材料科学
·
电催化
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Jia Yan,Sichao Wang,Yuan Chen,Ming Yuan,Yunpeng Huang,Jiabiao Lian,Jingxia Qiu,Jian Bao,Meng Xie,Hui Xu,Huaming Li,Yan Zhao
NiS/MoS 2 composite nanosheets were designed and prepared via facile ion-exchange, freeze-drying, and Ostwald ripening processes. MoS 2 nanosheets served as backbones to absorb Ni 2+ ions and form NiS nanosheets. The electrode based on the NiS/MoS 2 composite nanosheets exhibited an ultrahigh specific capacity of 343.5 mA h g −1 at 9 A g −1 , which was superior to that of as-prepared MoS 2 nanosheets (125.8 mA h g −1 ) and Ni(OH) 2 nanosheets (148.9 mA h g −1 ). In addition, NiS/MoS 2 composite nanosheets presented an enhanced rate performance and good life cycle due to their hierarchical structure, high surface area with numerous active sites, and synergistic performance. A NiS/MoS 2 //AC asymmetric supercapacitor device operated in a large potential window (0–1.5 V) delivered a high capacitance of 48.4 F g −1 at 0.1 A g −1 , an excellent energy density of 15.1 Wh kg −1 and a very high power density of 2.25 kW kg −1 . This smart in situ construction process opens a new route to synthesize binary metal sulfides for high-performance energy storage devices.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Bingqian Wang,Junyi Ma,Shujun Xu,Wenping Fan,Bin Liu,Guangming Li,Guangda Li
In this paper, a hollow tubular Co 3 S 4 /NiS/FeS heterogeneous composite was prepared by an ordinary hydrothermal procedure. The inner Co 3 S 4 can act as the carrier of the outer NiS/FeS, and the outer NiS/FeS can effectively prevent the collapse of the inner Co 3 S 4 hollow structure, ensuring the durability of the structure and performance in the cyclic charge-discharge test. The strong electronic interaction between Co 3 S 4 and NiS/FeS significantly improves the catalytic activity. It shows a small 230 mV overpotential at 10 mA cm −2 , which is superior to commercial RuO 2 . The Zn-air battery assembled with Co 3 S 4 /NiS/FeS catalyst showed outstanding stability over 2700 cycles with a narrow voltage gap of 0.67 V at 3 mA cm −2 . Flexible battery also combined based on this catalyst can generally be discharged/charged at each bending angle and the gap remained almost continuous. Furthermore, Co 3 S 4 /NiS/FeS also displays hydrogen evolution reactions activity, displaying a lower overpotential of 233 mV at 10 mA cm −2 . In the overall water splitting, Co 3 S 4 /NiS/FeS is used as both anode and cathode electrocatalyst , which can reach 10 mA cm −2 at 1.52 V, and the performance remains steady for 50 h. In conclusion, Co 3 S 4 /NiS/FeS is a potential tri-functional catalyst for ZABs and overall water splitting.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Miao Jiang,Wentong Fan,Gaozhan Liu,Wei Weng,Liangting Cai,Xiayin Yao
Increasing active material content is critical to realize high energy density for all-solid-state lithium batteries (ASSLBs), which is generally impeded by limited ionic/electronic conductions in cathode layer. Herein, one-dimensional NiS-CNT@Li 7 P 3 S 11 nanocomposites are synthesized by wet chemistry method and possess high mixed ionic/electronic conductivities. When employed as additives for LiCoO 2 , the NiS-CNT@Li 7 P 3 S 11 nanocomposites can efficiently improve the electrochemical performances of LiCoO 2 cathode in the ASSLBs. Specifically, the resultant Li/75%Li 2 S-24%P 2 S 5 -1%P 2 O 5 /Li 10 GeP 2 S 12 /LiCoO 2 -5%NiS-CNT@Li 7 P 3 S 11 ASSLBs with 70 wt% LiCoO 2 content deliver a reversible capacity of 114.3 mAh g −1 after 50 cycles under 0.1 C and 99.6 mAh g −1 at 0.5 C after 100 cycles at room temperature . Even if the active material LiCoO 2 content increases to 80%, a high reversible discharge capacity of 124 mAh g −1 can be achieved at 0.05 C after 25 cycles. Obviously, the excellent electrochemical performances are attributed to the improved ionic/electronic conductivities with assistance of NiS-CNT@Li 7 P 3 S 11 . This work provides an efficient strategy to design cathode materials with high ionic/electronic conductivities and paves the way for the practical application of ASSLBs.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 9
·5900-5907
·
IF 3.9
Suxing Luo,Meizhi Yang,Jiang Li,Yuanhui Wu
Conventional nanomaterials are available in electrochemical glucose nonenzymatic sensing, but their broad applications are limited due to their high cost and complicated preparation procedures. In this study, NiS–NiS2/sludge-based biochar/GCE was fabricated by one-step potentiostatic electrodeposition on biochar and used as an interface material for non-enzymatic sensing of glucose in 0.1 M NaOH. With an electrodeposition time of 300 s, the as-prepared sensors delivered the best electrochemical performance toward glucose due to the synergistic effects of NiS–NiS2 and sludge-based biochar. The as prepared NiS–NiS2/sludge-based biochar surface morphology, surface composition, and electrochemical properties were characterized by SEM elemental mapping, XPS and cyclic voltammetry. Under optimized conditions, the linearity between the current response and the glucose concentration has been obtained in the range of 5–1500 μM with a detection limit of 1.5 μM. More importantly, the fabricated sensor was successfully utilized to measure glucose in serum of sweetened beverages and human blood. Accordingly, NiS–NiS2/sludge-based biochar/GCE can hopefully be applied as a normal enzyme-free glucose sensor with excellent properties of sensitivity, reproducibility, stability, as well as sustainability.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Kailu Li,Hui Pan,Fang Wang,Zhengguo Zhang,Shixiong Min
Herein, a NiS nanoparticle-socketed CdS photocatalyst (NiS/CdS- e ) is developed by hydrothermal sulfurization of Ni-doped Cd(OH) 2 precursor, where the Cd(OH) 2 particles are converted into CdS while the doped Ni species are exsolved and socketed on the surfaces of CdS. 2% NiS/CdS- e presents a high H 2 evolution rate of 18.9 mmol g −1 h −1 with an apparent quantum efficiency (AQE) of 13.9% at 420 nm, much superior to those of pristine CdS (0.5 mmol g −1 h −1 ) and 2% NiS/CdS- h (9.9 mmol g −1 h −1 ) prepared by impregnation-hydrothermal sulfurization. The enhanced activity originates from the strongly coupled interface between exsolved NiS and CdS that efficiently promote the charge separation, while the exsolved NiS nanoparticles serve as highly active H 2 evolution sites. Moreover, the strongly coupled interfaces enable improved H 2 evolution stability for 2% NiS/CdS- e over a 30-h cycling reaction. This work provides an effective strategy toward strongly coupled cocatalyst/semiconductor photocatalysts for efficient solar energy conversion.
研究领域:
材料科学
·
催化化学
·
能源转换
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Minghao Shi,Nan Li,Shixiang Zuo,Guifang Sun,Wenjing Shen,Mianmian Wu,Qingfei Li,Jiangquan Ma
The development of the hydrogen industry from electrolytic water is confined in great measure to the slow kinetics of oxygen evolution reaction (OER), which means the rational design of a stabilized and efficient OER electrode is the key. The construction of easily accessible hydroxide ion (OH − ) adsorption sites can effectively accelerate the kinetics of the OER. Herein, the NiS/CoNC electrocatalysts , which can effectively adsorb OH − and exhibited excellent OER performance in an alkaline environment, were obtained by pyrolysis and sulfidation of NiCo-MOF nanosheets on nickel foam (NF). In particular, the optimized NiS/CoNC electrocatalyst achieved an overpotential of 46/106 mV at 10/100 mA cm −2 and Tafel slope of 57.41 mV dec −1 , which is superior to most reported materials. The outstanding function of OER results from the NiOOH/CoOOH active component generated by surface reconstruction after activation of the NiS/CoNC catalyst and the excellent charge transfer capability of the NiS component. This work offers a scheme to construct the electrocatalysts derived from MOF with excellent OER performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 16
·1216
·
IF 4.3
Ting Yang,Aiyi Dong,Weimin Liao,Xun Zhang,Yinhua Ma,Li Che,Honglin Gao
Hydrogen production by the electrolysis of water has become an important way to prepare green hydrogen because of its simple process and high product purity. However, the oxygen evolution reaction (OER) in the electrolysis process has a high overpotential, which leads to the increase of energy consumption. Developing efficient, stable and low-cost electrolytic water catalyst is the core challenge to reduce the reaction energy barrier and improve the energy conversion efficiency. CoS@NiS-80% nanosheets with rich heterogeneous interfaces were successfully synthesized by hydrothermal reaction and sulfuration. Heterogeneous interface not only promotes the effective charge transfer between different materials and reduces the charge transfer resistance but also accelerates the four-electron transfer process through the synergistic effect of nickel and cobalt atoms. Under alkaline conditions, the overpotential of CoS@NiS-80% nanosheets was only 280 mV at a current density of 10 mA cm−2, with a Tafel slope of 100.87 mV dec−1. Furthermore, it could work continuously for 100 h, exhibiting its outstanding stability. This work provides a novel approach for improving the OER performance of transition metal sulfide-based electrocatalysts through heterogeneous interface engineering.
研究领域:
材料科学
·
电化学
·
能量转换
·
纳米材料
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 16
·5348-5353
·
IF 6.4
Zhe Fan,Xu Chen,Xiaoqing Shi,Qiwei Jiang,Yang Zhang
Here we report a simple ion-exchange method to assemble one-dimensional NiS nanowires. This special synthesis process enables NiS nanowires to form a tightly connected network of transported electrons and a hierarchical porous structure with a large specific surface area. As a result, the counter electrode formed by the NiS nanowires exhibits both good electrical conductivity and excellent electrocatalytic activity. Actually, the novel NiS nanowires present a photovoltaic conversion efficiency of 7.56% as a counter electrode for dye-sensitized solar cells (DSSCs), which is 13.85% higher than that of the conventional Pt electrode, enabling them to be used as a cheap and efficient counter electrode material for replacing the traditional Pt electrode in DSSCs.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2018
·Vol. 1
·期 3
·612-623
·
IF 0
Chen Miaomiao,Zhu Jialong,Yang Baochan,Yao Xiuxiu,Zhu Xixi,Liu Qingyun,Lyu Xintian
In the present study, a facile method was proposed to prepare nickel sulfide (NiS) nanoparticles well-dispersed on the surface of montmorillonite/graphene oxide (MMT/GO). The NiS/MMT/GO nanocomposites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), fluorescence spectrophotometry, etc. Significantly, the novel NiS/MMT/GO nanocomposites exhibited high peroxidase-like activity toward the typical chromogenic substrate, 3,3′,5,5′-tetramethylbenzidine (TMB). However, glutathione (GSH) could inhibit the peroxidase-like activity of NiS/MMT/GO along with a visible color variation. Based on the color change of the system of nanocomposites-H 2 O 2 -TMB, a novel colorimetric sensor was designed and conveniently used to quantitatively detect H 2 O 2 as well as GSH. The limit of detection (LOD) of H 2 O 2 and GSH is 9.73 and 0.5043 μM, respectively. The proposed H 2 O 2 sensor has potential application in the field of biosensing, food, and environment.
ᅟ
研究领域:
纳米材料
·
生物传感器
·
分析化学
✓ 已验证
产品关联
DOI
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Xiao Feng,Wang Lei,He Qihang,Xu Fan,Wu Donghua,Chen Chao,He Ping,Tang Bin
Designing promising electrode material for supercapacitor application with rich redox activities, high capacity and great cycling stability has become a research priority. Herein, a nanohybrid (CoS 1.097 -NiS-MoS 2 ) with nanosheets combining nanorods morphology is prepared by high-temperature pyrolysis sulfuration of ZIF-67/NiMoO 4 . Co-existence of multiple crystalline phases is favorable for enriching electrochemical active sites and facilitating electron transfer. Consequently, CoS 1.097 -NiS-MoS 2 displays better supercapacitor performance with a specific capacity of 373.6 C g −1 at current density of 1 A g −1 and excellent cycling stability of 70.01% after 3000 cycles, surpassing CoS 1.097 (49.1 C g −1 ; 59.26%) and NiS-MoS 2 (105.8 C g −1 ; 62.00%). Moreover, a hybrid supercapacitor is assembled with CoS 1.097 -NiS-MoS 2 and activated carbon, exhibiting high energy density of 21.0 Wh kg −1 at 800 W kg −1 . This work opens a path for preparation of promising ternary metal sulfide-based materials for the field of energy storage.
研究领域:
材料科学
·
电化学
·
能量存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Senyang Wang,Shi Tang,Mengting Hua,Yuxuan Chen,Dantian Zhang,Rao Fan,Ling Li
Raspberry-like double-core shell CdS@ZnS@NiS material was prepared to use a simple one-step hydrothermal method, and then coated uniformly on carbon nanofibers (CNFs), resulting in the formation of highly efficient counter electrode (CE) for Zn-Cu-In-Se (ZCISe) quantum dot sensitized solar cells (QDSSCs). The QDSSCs used CdS@ZnS@NiS/CNFs as CE reached power conversion efficiency (PCE) of 9.72%, which is higher than Cu 2 S/brass (8.42%). This result indicates the dual-core shell structure possesses better catalytic properties, which indicates that the raspberry-shaped double-core shell CdS@ZnS@NiS is a feasible competitor as CE material for QDSSCs.
研究领域:
材料科学
·
纳米技术
·
能源技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）