JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Ting Li,Hong Chuan Fu,Xiao Hui Chen,Fei Gu,Nian Bing Li,Hong Qun Luo
The development of highly efficient oxygen evolution reaction (OER) and urea oxidation reaction (UOR) electrocatalysts with abundant resources is necessary for green hydrogen production. Ni-based compounds have received attention as the most promising earth-abundant electrocatalysts for OER and UOR, whereas some compounds in this main group, e.g., nickel selenides and tellurides, have received little attention. Herein, we demonstrate the interfacial engineered Ni 0.85 Se/NiTe array on Ni foam as a highly efficient catalyst for the OER, which exhibits an overpotential of 200 mV to obtain a current density of 10 mA cm −2 in alkaline solutions. Meanwhile, it exhibits a low potential of 1.301 V for the UOR at a current density of 100 mA cm −2 . In particular, it even has the potential to be used in methanol oxidation reaction and ethanol oxidation reaction. The vertical NiTe array not only serves as the conductive substrate for highly improving the mass loading of Ni 0.85 Se, but also triggers the strong electron interaction between two components, leading to increased adsorption sites available for the intermediates formed in the OER and UOR on the Ni 0.85 Se surface. This study provides a broad avenue to construct hierarchical nanostructures as outstanding electrocatalysts for efficient OER and UOR.
研究领域:
材料科学
·
电化学
·
能源材料
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Wenyue Jiang,Bingxin Zhao,Ziting Li,Peng Zhou,Xiaoshuang Chen,Jinping Wang,Rui Yang,Chunling Zuo
Research into cost-effective electrocatalysts for alkaline water and simulated seawater oxidation is paramount for advancing the conversion and storage of renewable energy. In this study, a FeSe 2 /Ni 0·85 Se catalyst with the hollow and ultrathin nanobelts structure is synthesized. The distinctive structure characteristics of FeSe 2 /Ni 0·85 Se heterojunction nanobelts confer exceptional oxygen evolution reaction (OER) properties in diverse electrolytes, including alkaline 1 M KOH and simulated seawater (1 M KOH + 0.5 M NaCl) solutions. The FeSe 2 /Ni 0·85 Se catalyst presents the low overpotentials of 259 and 267 mV at a current density of 10 mA cm −2 , along with the Tafel slopes of 33.7 and 65.5 mV dec −1 in two solutions, respectively. Additionally, the FeSe 2 /Ni 0·85 Se catalyst also demonstrates good stability. This exploration introduces a promising strategy for the development of high-performance electrocatalysts in the realm of green energy, marking the significant progress towards sustainable energy solutions.
研究领域:
材料科学
·
电催化
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Yuqing Kuai,Tianlei Wang,Meitang Liu,Hongwen Ma,Chongji Zhang
Flower-like Ni 0·85 Se nanosheets (Ni 0·85 Se-16 h) are synthesized by a two-step hydrothermal method . The electrochemistry performance and phase transformation of nickel selenides which obtained from different reaction times are examined. All the nickel selenides experience the phase transformation process. However, the opened flower-like Ni 0·85 Se-16 h sample takes the phase change process more slowly than others. In addition, the electrochemical properties differences between flower-like Ni 0·85 Se-16 h and NiO are also studied. Ni 0.85 Se-16 h exhibits a areal capacitance of 3.35 F cm −2 at 4 mA cm −2 which is approximately 3.6-fold higher than that of NiO. Then, the hybrid supercapacitor is assembled by using Ni 0·85 Se-16 h as a positive electrode and activated carbon as a negative electrode. The hybrid configuration could acquire a high energy density of 44.2 Wh kg −1 at a power density of 888.9 W kg −1 , and 28.5 Wh kg −1 at 12825 W kg −1 . The above results emphasize the fact that the opened flower-like construction could effectively promote the electron/ion transportation in the interface between the electrolyte and the active materials which delay the phase transition process and prove the fact that selenization process could enhance the areal capacitance more effectively than oxidation process . Thus, make it a potential candidate as battery-like electrode materials for hybrid supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xiao Fu,Xu Liu,Yi Wang,YuJia Wang,Xiaoxiao Yin,Zhongqing Liu
Transition metal selenides have attracted wide attention due to their excellent electrocatalytic activity and stability in the oxygen evolution reaction (OER). Doping effectively regulates surface and interface electronic structure, thereby enhancing activity and optimizing kinetic properties. In this study, tungsten (W) was doped into Ni 0.85 Se through a one-step electrodeposition method, producing a self-supported W-Ni 0.85 Se electrode prepared on a stainless steel mesh substrate. The W introduction significantly improved the conductivity, electron transfer ability, and electrochemically active surface area of Ni 0.85 Se, greatly enhancing electrocatalytic performance for OER. In 1 M KOH solution, the electrode exhibited excellent OER activity, with overpotentials of 222 mV and 273 mV at current densities of 50 mA·cm −2 and 100 mA·cm −2 , respectively, and a Tafel slope of 51.2 mV·dec −1 fitted in the current density range of 60 mA·cm −2 to 140 mA·cm −2 . Moreover, after testing for 48 hours at a current density of 100 mA·cm −2 , the catalyst showed almost no significant performance degradation. Density functional theory (DFT) calculations revealed that W doping enhances electron transport, adjusts adsorption/desorption of intermediates, and accelerates OER kinetics. This study provides a new approach for designing efficient, stable, and cost-effective transition metal selenide OER electrocatalysts.
研究领域:
材料科学
·
电化学
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Peiman Xu,Jinming Zhang,Zhifeng Ye,Yiyi Liu,Tianlun Cen,Dingsheng Yuan
Tailoring low-cost electrocatalysts with high activity and good stable for hydrogen evolution reaction (HER) is vital to energy harvesting and storage. Herein, Co doped Ni 0.85 Se nanoparticles supported on reduced graphene oxide (Co Ni 0.85 Se/RGO) were synthesized by a facile one-step hydrothermal method . As expected, the resulting hybrid materials effectively inhibit the aggregation of nanoparticles and possess the enhanced intrinsic conductivity, leading to exposure of more active sites and the faster electron transport . And then these beneficial effects enable Co Ni 0.85 Se/RGO efficient HER catalytic activity in both acid and basic electrolytes, achieving small overpotentials of 148 and 128 mV at a current density of 10 mA cm − 2 in 0.5 M H 2 SO 4 and 1.0 M KOH, respectively.
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
ENERGY & FUELS
·
2023
·
IF 5.3
Peng Xu,Hongrui Wang,Siqi Guo,Zuoming He,Gengcheng Liao,Ningyan Cheng,Yundan Liu,Bin-Wei Zhang
The development of affordable and efficient catalysts for seawater hydrogen evolution is highly desirable but presents significant challenges. In this study, we prepared an exceptionally efficient electrocatalyst, atomic Ru-doped Ni0.85Se supported on carbon cloth (Ru–Ni0.85Se/CC–12 h), for the hydrogen evolution reaction (HER) in both a 1 M KOH solution and an alkaline-simulated seawater environment (1 M KOH and 0.5 M NaCl). Notably, Ru–Ni0.85Se/CC–12 h exhibited excellent performance with remarkably low overpotentials of 34.1 and 44.2 mV at 10 mA/cm2 in the 1 M KOH solution and the alkaline-simulated seawater environment, respectively. Furthermore, it demonstrated remarkable durability, showing negligible performance degradation even after continuous 18 h at 10 mA/cm2. The outstanding HER performance of Ru–Ni0.85Se/CC–12 h in both alkaline solution and alkaline-simulated seawater can be attributed to the atomic Ru doping in Ni0.85Se, which modifies its geometric and electronic structure, thereby enhancing its activity and resistance to chloride ion poisoning and erosion simultaneously.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Hongzhi Wang,Xiangcheng Shen,Weiguo Zhang,Suwei Yao
The synthesis of low-cost transition metal bifunctional electrocatalysts that can replace noble metals is crucial for realizing high efficiency hydrogen production from industrial water splitting. Herein, a novel binder-free amorphous/crystalline NiFeS@Ni 0.85 Se bifunctional electrocatalyst material has been fabricated on nickel foam (NF) via a straightforward two-step electrodeposition method. The electrode features a unique structure in which NiFeS nanosheets of uniform size grow on Ni 0.85 Se microspheres, thus providing more active sites. It exhibits a minimal overpotential of 63 mV at 10 mA cm −2 for hydrogen evolution reaction (HER) and 311 mV at 100 mA cm −2 for oxygen evolution reaction (OER). Impressively, when assembled into an electrolytic cell, the electrocatalyst can reach 10 mA cm −2 at just 1.51 V and remains stable for 220 h. Additionally, at 1.68 V, the catalyst reaches 50 mA cm −2 and maintains stable operation for 140 h, demonstrating outstanding water splitting potential. This paper presents a composite material that combines the crystalline and amorphous states, allowing them to complement each other and jointly promote catalytic 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
JOURNAL OF ELECTRONIC MATERIALS
·
2018
·Vol. 47
·期 12
·7002-7010
·
IF 1.566
Ye An,Sui Yanwei,Qi Jiqiu,Wei Fuxiang,He Yezeng,Meng Qingkun,Ren Yaojian,Sun Zhi
In this work, Ni 0.85 Se nanosheets array electrode material was prepared with carbon fiber cloth (CFC) as a substrate. Owing to their special structure, the Ni 0.85 Se nanosheets array exhibits an outstanding energy storage property with a superior specific capacitance (820 F/g) and great rate capability (83.17%). Moreover, the Ni 0.85 Se electrode presents an great cycling performance with 82.63% retention after 10,000 cycles. The asymmetric supercapacitor (ASC) was fabricated based on Ni 0.85 Se positive and activated carbon (AC) negative electrode materials, with KOH/PVA gel as the electrolyte, respectively. A highest energy density of 29 W h kg −1 was achieved at a power density of 779 W kg −1 under the optimal potential range of 1.6 V. Furthermore, the Ni 0.85 Se//AC ASC devices demonstrate a great cycling performance of 81.25% capacitance retention after 5000 charge–discharge cycles. These excellent performance provide strong evidence to confirm the conclusion that Ni 0.85 Se nanosheets array used as electrode materials in supercapacitors and Ni 0.85 Se//AC asymmetric supercapacitors hold significant potential in the field of energy storage.
研究领域:
储能
·
材料科学
·
电化学
·
纳米材料
✓ 已验证
DOI
高影响因子
Green Energy & Environment
·
2026
·
IF 16.7
Zhijun Wang,Kelei Zhuo,Mengya Yang,Li Sun,Dong Sun,Yujuan Chen,Jianji Wang
The trade-off between energy and power density remains a major hurdle for supercapacitors (SCs). This work demonstrates a substantial performance enhancement in aqueous hybrid supercapacitors through synergistic electrode and electrolyte engineering. First, titanium-doped nickel selenide nanospheres (Ti-Ni 0.85 Se) are successfully synthesized via a hydrothermal method using trace Ti 3 C 2 T x MXene as a controllable titanium source. The incorporated Ti atoms induce a slight lattice expansion and optimize the electronic structure, significantly improving the intrinsic conductivity and charge-transfer kinetics of the material. In a 3 mol L -1 KOH electrolyte, the Ti-Ni 0.85 Se electrode delivers a high specific capacity of 586 C g -1 at 1 A g -1 . Furthermore, introducing K 4 [Fe(CN) 6 ] as a redox-active additive provides additional Faradaic capacity via the reversible [Fe(CN) 6 ] 3-/4- couple, boosting the specific capacity of Ti-Ni 0.85 Se to 861 C g -1 . The assembled Ti-Ni 0.85 Se//activated carbon hybrid supercapacitor achieves a high energy density of 35.7 Wh kg -1 at a power density of 1156 W kg -1 , with 71.6% capacitance retention after 3000 cycles. This study validates the synergistic strategy of electrode doping and electrolyte modulation as an effective pathway to break the performance bottlenecks of supercapacitors.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Juan Xia,Qi Wang,Miaomiao Chen,Wenwen Li,Jie Liu,Jitang Chen,Hai Wu,Suhua Fan
To avoid the evaporation and leakage of the liquid electrolyte and increase the long-term stability of the cell, a strategy was developed to construct bifacial dye-sensitized solar cells employing quasi-solid-state electrolyte (BQDSSCs). Two metal selenides with different morphologies, Co 0.85 Se, which has a foliate structure like the structure of graphene, and Ni 0.85 Se, which has uniform nanoparticle , were synthesized by a facile one-step hydrothermal method . The proposed BQDSSCs were then constructed using the TiO 2 photoanode, polyvinylidene fluoride gel electrolyte, and Co 0.85 Se or Ni 0.85 Se as the counter electrode (CE) electrocatalysts . Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization measurements were performed to investigate the electrochemical behavior of the Co 0.85 Se, Ni 0.85 Se, and Pt CEs. The results showed that the graphene-like Co 0.85 Se material exhibited better operational stability, greater charge-transfer ability, and higher electrocatalytic activity for the reduction of I 3 − than the Ni 0.85 Se nanoparticles. Furthermore, for the BQDSSCs, Co 0.85 Se yielded the highest power conversion efficiencies (PCE) of 8.33% and 4.79% under front and rear irradiations, respectively, in comparison with the front and rear efficiencies of 7.44% and 4.05% for Pt and 7.23% and 4.16% for Ni 0.85 Se CEs, respectively. The BQDSSC device based on the Co 0.85 Se CE exhibited good long-term stability with only a 5% drop in power conversion efficiency after 1000 h of one-sun soaking. Consequently, graphene-like Co 0.85 Se was considered to be an ideal material for constructing cost-effective BQDSSCs.
研究领域:
材料科学
·
能源科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Yanwei Sui
Herein, we design and construct the hierarchical NiCo 2 O 4 @Ni 0.85 Se core-shell architecture directly growing on Ni foam as advanced materials for supercapacitor . The composite materials deliver excellent electrochemical performance with a high specific capacitance of 1454 F/g and superior cycle life with 88.5% retention after 10000 cycles, which ascribed to the synergistic effect of pure NiCo 2 O 4 and Ni 0.85 Se. Furthermore, the NiCo 2 O 4 @Ni 0.85 Se//AC asymmetric supercapacitor were fabricated with a highest energy density of 29.3 W h kg −1 at power density of 799 W kg −1 . It is expected that the NiCo 2 O 4 @Ni 0.85 Se will be a kind of promising electrode materials for supercapacitor.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Yu Zhang,Tingting Wang,Yong Wang,Yuanqi Wang,Liqian Wu,Yuan Sun,Xuan Zhou,Wentao Hou,Youwei Du,Wei Zhong
Hollow nano-/micromaterials with tunable shell architectures and compositions are becoming increasingly important and attractive for electrochemical energy conversion and storage. Here, we report carbon-incorporated mixed anionic nickel phosphorus-selenium (Ni 0.85 Se|P) hollow yolk-shell microspheres synthesized by simultaneous selenization and phosphatization of Ni-based metal organic framework (Ni-MOF). Our experimental results indicated that P-doping reduces the synthesis temperature of the system and enhances the crystallinity of Ni 0.85 Se. As a result, this unique structure (Ni 0.85 Se|P) with better crystallinity and higher Ni 2+ /Ni 3+ ratio shows outstanding specific capacity of 506 C g −1 at 1 A g −1 . And the assembled Ni 0.85 Se|P//AC hybrid supercapacitor shows high power density of 20.7 Wh kg −1 at energy density of 798.7 W kg −1 . Meanwhile, Ni 0.85 Se|P exhibits smaller Tafel slope of 90 mV dec −1 and lower onset overpotential of 179 mV versus reversible hydrogen electrode (RHE) for hydrogen evolution reaction (HER) than that of NiP 2 and Ni 0.85 Se, which demonstrates the modulated electronic structure of Ni 0.85 Se|P. Our study will provide a new strategy for combining P-doped induced high crystallinity mixed anion transition metal complexes with MOF of hollow structures for energy storage device and HER.
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
危险品化学品经营许可证（带存储）