ChemElectroChem
·
2017
·Vol. 5
·期 3
·507-514
·
IF 4.136
Beirong Ye,Miaoliang Huang,Quanlin Bao,Si Jiang,Jinhua Ge,Huang Zhao,Leqing Fan,Jianming Lin,Jihuai Wu
Graphical Foam support : A NiTe/NiSe composite electrode supported on a Ni foam is synthesized by using a two-step process involving a hydrothermal method and cyclic voltammetry electrodeposition. The NiTe/NiSe composite electrode exhibits excellent electrochemical performance with a specific capacitance of 1868 F g −1 (5.60 F cm −2 ) at 1 A g −1 and remarkable cycling stability. The asymmetric supercapacitor based on a NiTe/NiSe positive electrode has a high specific capacitance of 94.9 F g −1 as well as a maximum energy density of 33.7 Wh kg −1 and power density of 4000 W kg −1 . NiTe/NiSe composites grown in situ on Ni foam are successfully developed as a binder-free electrode for supercapacitors. The as-obtained NiTe/NiSe composite electrode exhibits excellent electrochemical properties with a higher specific capacitance of 1868 F g −1 (5.60 F cm −2 ) at a current density of 1 A g −1 . In addition, an asymmetric supercapacitor is fabricated with NiTe/NiSe as the positive material and active carbon (AC) as the negative material. The resulting NiTe/NiSe//AC device exhibits a high energy density of 33.7 Wh kg −1 at a power density of 800 W kg −1 , providing good cycling performance that retained 86.2 % of the initial capacitance at 2 A g −1 after 5000 cycles. All of the results illustrate that the NiTe/NiSe electrode is promising for potential application in supercapacitors and other fields.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Xiaotian Xie,Yi Xu,Fanshu Yuan,Qi Wu,Pengchao Liu,Jie Liu,Dongtian Wang,Tingting Lv,Qianli Zhang
The strategic design of in situ grown nanomaterials with microdendrite morphology to enhance supercapacitor performance has become a significant research focus in the field of renewable energy storage. This study explores an innovative one-step microwave technique for producing different NiSe microdendrite arrays that are grown in situ on Ni foam (NF) substrates. In this process, Ni foam serves dual roles as a Ni source and a structural framework. At a current density of 0.6 A g −1 , NiSe microdendrite arrays that were synthesized demonstrate a capacity of 261.1 mAh·g −1 , surpassing that of the majority of traditional pseudocapacitive materials. Furthermore, the effect of the solvent, Se powder dosage, and microwave reaction parameters on the micromorphology and electrochemical properties of NiSe is comprehensively examined. Furthermore, the supercapacitor device featuring a positive electrode composed of NiSe microdendrite arrays and a negative electrode constructed from activated carbon (AC) exhibits a broad voltage range of 1.7 V. It also achieves a peak energy density of 50.29 Wh·Kg −1 at power density of 847.98 W kg −1 , suggesting a promising application prospect.
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
·
2024
·
IF 5.8
Dingdiao Mo,Jiaxing Zhang,Guoxiang Chen,Zihao Huang,Xiangao Liu,Weitong Cai,Jie Cui,Wei Su
The electrodeposition method is commonly used for fabricating water splitting catalysts. Traditional methods assume a static precursor solution, ignoring the effects of solution dynamics. We theorized that stirring the solution during electrodeposition could improve mass transfer and current distribution, thereby enhancing electrochemical kinetics and nucleation. Consequently, we developed a novel electrodeposition technique to synthesize Fe-doped NiSe, an effective catalyst for alkaline water hydrolysis, demonstrating exceptional performance and stability. This catalyst notably decreases the overpotentials for OER and HER to 185/266 mV and 101/271 mV at 10 and 300 mA cm −2 , respectively. At the same time, the overall water splitting system comprising this catalyst requires only a low potential of 1.48 V to stably catalyze water splitting for over 60 hours. Electrochemical tests indicate that stirred deposition endows the catalyst with a larger electrochemically active area. In-situ Raman spectroscopy reveals NiOOH as an active phase, and Fe doping facilitates NiOOH formation at lower overpotentials, enhancing OER performance. First-principles calculations suggest that Fe doping optimizes the rate-determining step, lowers the activation energy for the OER process, and boosts conductivity. This study presents a method to improve OER efficiency in Ni-based catalysts, offering insights into mechanism control.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2025
·
IF 3.9
Tianjiao Ling,Fan Lv,Ruiqi Guo,Yi Cao,Mingzhi Zhang,Huihua Wang,JinXin Chen,Huaqing Li,Hao Ren,Guangcheng Li,Hongwei Li,Minqi Sheng
The design of bifunctional catalytic electrodes with high performance and low cost is the key to improving hydrogen production efficiency by water splitting. However, achieving the coexistence of high activity and stability of catalytic materials still faces challenges. Herein, we designed and prepared a self-supported electrode material (Ni₂P/NiSe@CNTs/CC) through the combined action of metal-catalyzed carbon nanotube (CNTs) growth, selenization, and phosphating. In this process, CNTs are grown in situ on the carbon cloth (CC) surface, and the inner cavity is filled with heterogeneous Ni₂P/NiSe nanoparticles. The optimized Ni₂P/NiSe@CNTs/CC electrode demonstrates an overpotential of 116.2 mV at -10 mA cm-² for hydrogen evolution reaction (HER) and 332.4 mV at 50 mA cm-² for oxygen evolution reaction (OER) in 1.0 M KOH electrolyte, respectively. Accordingly, the Ni₂P/NiSe@CNTs/CC||Ni₂P/NiSe@CNTs/CC couple achieves efficient water splitting with a cell voltage of 1.67 V at 10 mA cm-² and 2.01 V at 50 mA cm-², respectively. Moreover, Ni₂P/NiSe@CNTs/CC||Ni₂P/NiSe@CNTs/CC couple only decays by 0.5% after 100 hours of continuous operation at 10 mA cm-², indicating that it has considerable stability. Dynamic bubble monitoring results display that the Ni₂P/NiSe@CNTs/CC electrode/ electrolyte interface has a strong bubble escape capability, which promotes the cyclic service of the catalytic active sites.
研究领域:
材料科学
·
电化学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Xiaowen Zhong,Jianglin Liu,Bowen Liu,Xiaofei Wang,Xuliang Lin
The development of productive and durable non-precious metal catalysts for the sluggish oxygen evolution reaction (OER) is critical for water splitting. Herein, a novel NiSe-FeO x heterojunction encapsulated in lignin-derived carbon layer (NiSe-FeO x @LC) was synthesized via hydrothermal self-assembly and in-situ pyrolysis . NiSe-FeO x @LC exhibited excellent OER performance with an overpotential of 265 mV at 50 mA·cm −2 , a Tafel slope of 83 mV·dec −1 , as well as long-term stability. Both experimental and DFT calculation results indicated that the doping of FeO x into NiSe@LC successfully optimized the dual interface structure between NiSe and FeO x , thereby promoted the d-bands orbital hybridization, that facilitated electron transfer . Besides, the carbon coating effectively protected the NiSe-FeO x components from leaching and agglomerating during the reaction. This study provides insight into the significance of lignin-derived carbon-encapsulated metallic catalyst for electrocatalytic OER process.
研究领域:
材料科学
·
电催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY
·
2021
·
IF 5.742
Li Sun,Tao Zhang,Ying Liu,Jianxin Wang,Wei Zong,Yuying Cao,Xiuwen Wang
The monodispersed NiSe hierarchical microspheres (NiSe-112) were controllably synthesized by the facile solvothermal method and employed as the high-efficiency counter electrode (CE) electrocatalysts for the triiodide (I 3 − ) reduction reaction (IRR). The obtained NiSe-112 combines the advantages of the well monodispersity, the inimitable 3D micro/nanostructure and loosened rough surface structure, which not only facilitated the permeation of the electrolyte containing I 3 − /I − redox couple, but also provided the substantial active sites for the IRR. As a result, NiSe-112 exhibited excellent catalytic activity for IRR accompanying with an impressive photoelectric conversion efficiency of 7.67 %, which is compared to that of the conventional Pt-based DSSCs (7.85 %). The relevant electrochemical measurements demonstrated that the obtained NiSe-112 possessed Pt-like catalytic activity, rapid electron transport capability and excellent electrochemical stability. Therefore, three-dimensional hierarchical structural NiSe microspheres have a great potential to replace the noble metal Pt, which is beneficial to promote the development of the low-cost CE catalysts for 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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Ya-feng Deng,Yong Chen,Xiu-li Zhang,Qian Zhang,Zi-jian Wei,Dong Wang
An in-situ one-step hydrothermal method is used to prepare hybrid CuSe@NiSe nanosheets with vertical orientation and interpenetrating structure on the surface of copper foam (S-CuSe@NiSe). The S-CuSe@NiSe has excellent electrochemical performance and outstanding cycling performance. The specific capacitance of the S-CuSe@NiSe is 1478 F g -1 at a current density of 1 A g -1 and stabilizes at 990 F g -1 at 8 A g -1 . The specific capacitance retention of S-CuSe@NiSe is 81.7% after 10,000 cycles. The all-solid-state flexible capacitors prepared with S-CuSe@NiSe as electrode (S-CuSe@NiSe-SFCs) also exhibit excellent flexibility, superior electrochemical performance and cycle stability. Its capacitance reaches 333 F g -1 at a current density of 1 A g -1 . Capacitance retention of 79.3% has been obtained after 10,000 charge-discharge cycles at 2 A g -1 .
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 POWER SOURCES
·
2023
·
IF 9.2
Qian Sun,Xiaomin Cheng,Cheng Ma,Jitong Wang,Wenming Qiao,Licheng Ling
Lithium-sulfur (Li–S) batteries are considered as the most promising successors of lithium-ion batteries, however, the shuttle effect and sluggish reaction kinetics are the biggest obstacles hindering their commercialization . In this work, a kind of NiSe nanoparticles embedded in corn stalk-derived two-dimensional (2D) porous carbon nanosheet (NiSe@CSC) is constructed as a separator modifier for advanced Li–S batteries. The rich pore structure of the corn stalk-derived carbon nanosheets enables uniform distribution of NiSe and provides more deposition sites for lithium polysulfides (LiPS). Electrochemical analyses show that NiSe increases the affinity for LiPS to suppress the shuttle effect, thereby effectively preventing the corrosion of polysulfide on the lithium anode. NiSe@CSC is found to accelerate the redox conversion of sulfur species in the kinetic study . Consequently, the assembled Li–S cells with NiSe@CSC coating layer exhibit a high-rate performance of 710 mAh g −1 at 3 C and a low capacity attenuation rate of 0.046% per cycle after 800 cycles at 1 C. Furthermore, it can still maintain 2.8 mAh cm −2 at 0.5 C in near-commercial application scenarios of 4.1 mg cm −2 sulfur loading. The NiSe@CSC-based Li–Li symmetric cells also demonstrate stability and low overpotential in protecting the lithium anode. This combination of renewable biomass-based carbons and transition metal selenides enriches the exploration of biomass materials in separators and provides new ideas for designing practical Li–S batteries.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Zhi Li,Minglong Sun,Yalin Li,Ziang Liu,Dongxiang Zhang,Yingmin Liu,Xinghui He,Mo-Jie Sun
Metal–organic frameworks (MOFs) are crystalline porous materials for storage and energy conversion applications with three-dimensional pore structure, high porosity, and specific surface area, which are widely utilized in electrocatalysis. Herein, MoSe2/NiSe composites were synthesized by selenization reaction using NiMOF as the precursor. The composites were hollow nanoflower structures with a synergistic effect between MoSe2 and NiSe to promote rapid electron transfer, which exhibited good hydrogen evolution reaction performance in an alkaline medium. At a current density of 10 mA/cm2, the HER overpotential reaches 80 mV, the Tafel slope is 33.86 mV/dec, and the material has good stability, with polarization curves remaining essentially unchanged after 3000 cycles. These results indicate that the method has a promising application in the preparation of efficient and sustainable catalysts for hydrogen production in alkaline medium.
研究领域:
材料科学
·
电催化
·
能源转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Zhiqiang Peng,Hongyue Li,Jiaqi Li,Feng Ao,Yue Cheng,Kai Huang,Jun Yao,Peng Wang,Yupei Zhao
The development of efficient non-precious metal catalysts is crucial for the large-scale application of hydrogen production via water electrolysis. Coupling FeNi catalysts with transition metal chalcogenides has proven to be an effective strategy for enhancing catalytic performance. However, limited attention has been given to simultaneously regulating electronic structure and local environmental factors. In this work, we synthesised Fe-Ni-C and NiSe heterostructures, that leverage enhanced water adsorption and rapid electron transfer at their surfaces. Among them, NS/2Fe-Ni-C@600 exhibits excellent catalytic performance, requiring low overpotentials of only 276 mV for oxygen evolution reaction (OER) and 292 mV for hydrogen evolution reaction (HER) reaching to 10 mA·cm −2 in 1 M KOH. Moreover, it exhibited remarkable stability, with no significant degradation observed during 12 h of constant potential stability testing. Simulation calculations show that NiSe increases the water adsorption capacity at the Fe-Ni-C interface on the OER reaction process on the metal catalyst surface at the microscopic level. It regulates the orbital overlap between Fe and Ni above the Fermi energy level, and effectively reduces the adsorption energy of electrolytic water reaction intermediates of Fe-Ni-C. This strategy of constructing heterojunctions between bimetallic catalysts and transition metal sulfides modulates the electronic structure and enhances the surface water distribution, which contributes to improving the reactivity of electrolytic water catalysts. This study further deepens the design and understanding of bimetallic catalysts.
研究领域:
材料科学
·
电化学
·
能源催化
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 13
·3224
·
IF 4.2
Zhen Lu,Hongjie Kang,Qianwen Duan,Chao Lv,Rui Liu,Feng Feng,Haidong Zhao
Transition metal selenides have the leading position in the field of energy storage and conversion due to their high theoretical capacity, good electrical conductivity, and cycling stability. Nickel is widely used for the construction of positive electrodes in devices due to its good conductivity, variable valence state, and ideal redox activity. NiSe materials have high internal resistance and are prone to volume change during charging and discharging, thus affecting the practical application of this electrode material, and the reported NiSe materials have not achieved a more desirable capacity value. Therefore, in this study, N, P-NiSe nanoelectrode materials were prepared using nickel foam as the nickel source and hexachlorocyclotriphonitrile as the nitrogen and phosphorus dopant using an efficient, energy-saving, and simple microwave method. It was also characterised by XRD and XPS to confirm the successful preparation of N, P-NiSe materials. In addition, the material yielded a high capacitance value (3184 F g−1) and good cycling stability (72% of the initial capacitance value was retained after 4000 cycles) in electrochemical tests. To demonstrate its excellent suitability for practical applications, an asymmetric supercapacitor was assembled using N, P-NiSe as the anode and activated carbon as the cathode. At an operating voltage of 1.6 V, the device achieved an energy density of 289.06 Wh kg−1and a power density of 799.26 W kg−1and retained 80% of its initial capacity after 20,000 cycles.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chunmei Lv,Jing Liu,Borong Lu,Ke Ye,Guiling Wang,Kai Zhu,Dianxue Cao,Ying Xie
Reasonable design of cost-effective counter electrode (CE) catalysts for triiodide (I 3 − ) reduction reaction (IRR) by simultaneously combining heteroatom doping and facet engineering is highly desired in iodine-based dye-sensitized solar cells (DSSCs), but really challenging. Herein, the density function theory (DFT) calculations were first conducted to demonstrate that the Fe-doped NiSe (1 1 1) showed an appropriate adsorption energy for I 3 − , increased number of metal active sites, reinforced charge-transfer ability, and strong interaction between 3 d states of metal sites and 5 p state of I 1 atoms in I 3 − , compared to NiSe (1 1 1). Based on this finding, the well-defined Fe-NiSe octahedron with exposed (1 1 1) plane (marked as Fe-NiSe (1 1 1)) and NiSe octahedron with the same exposed plane (named as NiSe (1 1 1)) are controllably synthesized. When the as-prepared Fe-NiSe (1 1 1) and NiSe (1 1 1) worked as CE catalysts, Fe-NiSe (1 1 1) exhibits improved electrochemical performance with higher power conversion efficiency (PCE) than NiSe (1 1 1), providing new opportunity to replace precious Pt for DSSCs.
研究领域:
材料科学
·
能源科学
✓ 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）