Journal of Energy Storage
·
2026
·
IF 10.7
Chundong Geng,Xin Gao,Qian Li,Yanqiu Xie,Gang Liu,Haoze Wang,He Bai,Fan Jiang,Hongyan Yue
Although interlayer engineering strategies have demonstrated significant potential in enhancing the electrochemical performance of layered manganese vanadates, the role of intercalated crystal water in regulating charge storage behavior should be clarified. Herein, several manganese vanadates (MnV 2 O 6 ·nH 2 O) with different crystal water contents are fabricated, and the storage behaviors are investigated. When the content of crystal water is limited (n = 2), the interlayer crystal water can act as a “pillar” to enhance ion diffusion kinetics, optimize the interlayer charge distribution, and alleviate structural collapse during charge/discharge cycles. However, excessive water molecules (n = 4) can form metastable coordination configurations and induce localized structural damage during repeated charge/discharge processes. As a result, MnV 2 O 6 ·2H 2 O cathode material exhibits an optimal specific capacity (1318.2 C g −1 at 1 A g −1 ) and cycle stability (84.31% capacity retention after 10,000 cycles) better than that of MnV 2 O 6 (507.9 C g −1 at 1 A g −1 , capacity retention of 61.62%) and MnV 2 O 6 ·4H 2 O (591.3 C g −1 at 1 A g −1 , capacity retention of 67.64%). Furthermore, the hybrid supercapacitor assembled with MnV 2 O 6 ·2H 2 O cathode and activated carbon anode (MnV 2 O 6 ·2H 2 O//AC) demonstrates a superior energy density of 59.12 Wh kg −1 at 690.80 W kg −1 , with 87.03% of the original capacity remaining after 10,000 cycles.
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DOI
高影响因子
Nature Communications
·
2026
·
IF 15.7
Ya Zongyang,Li Mei,Fu Donglong,Zheng Yu,Wei Ruhan,Wang Hao,Zhang Kangning,Xu Dong,Zhang Zixuan,Zhang Xue,Yan Shen,Wang Hua,Zhang Shengbo,Gong Jinlong
Photocatalytic C−N coupling offers a promising approach for the sustainable production of amino acids, but the uncontrolled coupling pathway of reaction intermediates limits yield and selectivity. This paper describes a Pd−B diatomic catalyst that can selectively catalyze the photosynthesis of glycine via C−N coupling reaction between waste poly(ethylene terephthalate)-derived ethylene glycol and nitrate, achieving a glycine yield of 2.9 mmol g cat −1 h −1 with a selectivity of 92%. Mechanistic investigations reveal that ethylene glycol is photo-oxidized to glycolaldehyde at the hole-rich B site, while nitrate is photo-reduced to NH 4 + /NH 3 at the electron-rich Pd site. Subsequently, glycolaldehyde undergoes C−N coupling with NH 4 + /NH 3 , and further photo-oxidized to form glycine. The Pd−B diatomic site more effectively stabilizes the glycolaldehyde intermediate, resulting in a more favorable C−N coupling pathway than metal oxide and enhancing glycine selectivity. Thus, we show a catalytic system for selective glycine photosynthesis by precisely regulating the reaction pathways of key intermediates.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Shuai Jiang,Yanxin Zhang,Qi Zhang,Yifeng Cao,Longgang Wang,Weifeng Lin
Hydration lubrication is the core mechanism of water-based lubrication, enabling low friction through biomimetic interfacial hydration layers. Zwitterionic materials, with their outstanding hydration capabilities have recently emerged as key choices for constructing superlubricant interface materials. In the study, inspired by the natural osmolyte trimethylamine N -oxide (TMAO), we designed and synthesized a novel class of N -oxide zwitterionic lubricants featuring a direct N⁺-O⁻ bond. Unlike conventional zwitterions such as sulfobetaine and carboxybetaine, these materials possess a smaller bond dipole and induce stronger water polarization, resulting in a robust hydration layer even under high-salinity conditions. The resulting lubricants exhibit excellent salinity tolerance and substrate adaptability, maintaining a low coefficient of friction (COF) across various surfaces. Together with their inherent biocompatibility and universal lubricating performance, these properties underscore the strong potential of N⁺-O⁻ zwitterions for biomedical and advanced interfacial applications.
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高影响因子
Nature Communications
·
2026
·
IF 15.7
Lai Dingbo,Yu Jia,Ma Zi-Ang,Ye Xiaolin,Wang Chaoxi,Zhang Junqing,Wang Tuo,Zhao Zhi-Jian,Zhang Peng,Gong Jinlong
The electrochemical C–N coupling of biomass-derived 5-hydroxymethylfurfural (HMF) with methylamine offers a promising sustainable route to value-added amines. However, achieving high selectivity remains challenging due to competing side reactions, including C = O hydrogenation and C–C dimerization. This paper describes tailoring the surface structure of Ag catalysts to modulate HMF adsorption and intermediate hydrogenation behavior and thus enhancing C–N coupling selectivity. Ag nanoparticles, predominantly exposing the (111) facet, exhibit higher selectivity compared with Ag nanocubes mainly enclosed by (100) planes. The Ag(111) facet favors the C–N coupling pathway by regulating both adsorption geometry and hydrogenation ability. In-situ Raman spectroscopy and density functional theory (DFT) calculations reveal that an η 1 (C)-aldehyde adsorption configuration, dominant on Ag(111), enhances carbonyl electrophilicity and facilitates C = O polarization, promoting nucleophilic attack by methylamine. In contrast, the η 2 (C,O)–aldehyde configuration, more common on Ag (100), stabilizes the C = O bond, limiting its reactivity. Moreover, Ag(111) shows enhanced imine hydrogenation activity, further improving amine selectivity. This study highlights the significance of facet-dependent adsorption modulation in steering reaction pathways and advancing sustainable electrochemical synthesis.
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DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 14
·期 6
·5820-5830
·
IF 1.5
Yao Liug,Xiaojing Liug,Junli Liu,Chaozhong Guo,Yanrong Li,Jin Zhang,Zhongbin Li
Ternary Fe-N-C catalysts are regarded as the most promising candidates for low-cost alternatives to the Pt-based materials for catalyzing the oxygen reduction reaction (ORR). In this paper, the Fe and N codoped carbon catalyst (Fe-Py@K-800) with the unique foam-like 3D structure has been fabricated by using the molecular sieve as a new solid-state template. The results of physical characterization indicate that Fe atoms are coordinated with nitrogen atoms to form the Fe-N ORR-active structure. In contrast with the commercial Pt/C catalyst, the Fe-Py@K-800 displays a comparable ORR electrocatalytic activity with an onset potential of ~1.1 V and a half-wave potential of ~0.88 V ( vs. RHE), however, the long-term stability of Fe-Py@K-800 is obviously better. These results show that iron-organic coordination in the pyrrole ring will play a role in the generation of nitrogen-rich active sites, which facilitates the enhancement of ORR activity in alkaline electrolyte.
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高影响因子
CHEMICAL PAPERS
·
2017
·Vol. 69
·期 4
·580-585
·
IF 1.258
Wei Song-Bo,Tang Bo,Peng Xin-Hua
4-Nitro- o -xylene was selectively oxidized to 2-methyl-4-nitrobenzoic acid using dilute nitric acid as the oxidizing agent under atmospheric pressure. The oxidation of 4-nitro- o -xylene was effectively promoted by an addition of radical initiators. Under reflux, 2-methyl-4-nitrobenzoic acid was afforded in high yield using nitric acid combined with N -hydroxyphthalimide, cobalt dichloride (CoCl 2 · 6H 2 O), manganese acetate (Mn(OAc) 2 · 4H 2 O) and phase transfer catalyst.
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高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Hui Lv,Shifu Wang,Zuoyi Xiao,Chengrong Qin,Shangru Zhai,Guoxiang Wang,Zhenyu Zhao,Qingda An
Currently, hollow carbon spheres (HCS)-based supercapacitors are gained tremendous interest due to their excellent electrochemical property . However, the inferior structural stability and unsatisfactory space utilization restrict the applications for high power devices. Herein, a kind of novel N-doped HCS (N-HCS) with controllable shell numbers is constructed by layer-by-layer assembly of polydopamine (PDA) and polypyrrole (PPy) layers on carboxyl modified polystyrene (PS–COOH) spheres. Compared with single-shelled N-HCS, the optimize N-HCS with 4 shells (N-HCS-4) exhibits improved specific surface area from 43.9 m 2 g −1 to 1110.2 m 2 g −1 , which provides a large accessible surface area for the electrolyte, thereby facilitating the ion diffusion and electron transportation. Meanwhile, the doping heteroatom endows N-HCS with the additional pseudocapacitance . Very interestingly, the significant electrochemical properties of N-HCS at the varied coating sequence and number of PDA and PPy layers indicate the formation of the optimal microstructure, which could match with the electrolyte ion size for accelerating the capacitive response. The assemble asymmetrical supercapacitor displays a high energy density of 41.18 Wh kg −1 at a power density of 250 W kg −1 , and excellent cycling stability of 99.1% over 10,000 cycles due to the improved structural stability from the synergistic effect in different shells.
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高影响因子
RSC Advances
·
2014
·Vol. 5
·期 10
·7182-7191
·
IF 3.708
Bin Yang,Chengxiang Yu,Qingni Yu,Xingwang Zhang,Zhongjian Li,Lecheng Lei
Comparative studies of the textural properties of carbon xerogel (CX) and commercial activated carbon (AC) demonstrated that CX has higher total pore volume and pore diameter, whereas its adsorption capacity for Pb(II) ions in aqueous solution is lower. Herein, the purpose of the present study is to improve the adsorption performance by the introduction of N into the CX matrix on the basis of the extraordinary textural property. Accordingly, the surface chemistry, porous texture, and morphology of the obtained N-doped CX (NCX) were modified. The removal efficiencies of Pb, Zn and Cu by NCX were 1.97, 1.67, and 1.64 times of those by CX, respectively. It was found that the surface density of adsorbed metal ions per unit specific surface area of NCX increased as a linear function with the increase in the N content. The adsorption process of Pb(II) ions followed the pseudo-second-order kinetics and Langmuir model with a maximum adsorption capacity of 83.8 mg g−1, indicating that NCX would be a promising adsorbent for removal of heavy metal ions from water.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Quan Kong,Nanyu Fan,Siyi Chen,Xiaofen Wu,Lihua Liu,Ruifeng Lang,Zeyuan Gao,Hongtao Guan,Chengjun Dong,Gang Chen
The design and synthesis of non-noble bifunctional electrocatalysts with high efficiency for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is still ongoing for enhanced overall water splitting. Herein, the heterostructure N-doped nickel sulfide/cobalt sulfide (N-Ni 3 S 2 /CoS 2 ) catalyst was in situ growth on Ni foams (NF) via an electrochemical deposition method followed by rapidly vulcanizing process at low-temperature. Benefiting from the abundant interface, high conductivity of NF, large electrochemical surface area, N-Ni 3 S 2 /CoS 2 /NF catalyst exhibits excellent activity for both HER and OER. Low overpotentials of 245 and 100 mV can drive a current density of 10 mA cm −2 for OER and HER in 1.0 M KOH. Serving as the bifunctional catalysts, N-Ni 3 S 2 /CoS 2 /NF catalyst delivers the current density of 10 mA cm −2 at a very low cell voltage of 1.56 V in the water splitting reaction.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 49
·期 11
·18371-18378
·
IF 5.2
Qiujun Hu,Junbiao Guo,Hanyang Zuo
Bismuth telluride (Bi 2 Te 3 )-based thermoelectric materials have been commercially utilized for refrigeration and energy conversion at room/near room temperature. However, n -type Bi 2 Te 3 compounds always exhibit inferior performance compared with their p-type counterparts, which is pronouncedly impeding Bi 2 Te 3 -based energy converters from further optimizations. Herein, a promising ZT value ( ZT = 1.33) was obtained in n-type Bi 2 Te 2.7 Se 0.3 (BTS) materials by using an interface engineering strategy to synergistically optimize the electron and phonon transport properties. In detail, ZrO 2 ceramic nanoparticles (NPs) were entered into BTS matrix to construct high-density heterogeneous interfaces. The heterogeneous interfaces strongly scatter phonons and lower energy carriers, leading to decreased thermal conductivity and increased Seebeck coefficient, while the electrical conductivity is not sacrificed due to the compromise of the slightly reduced carrier mobility by interfacial scattering and the increased carrier concentration by ZrO 2 NPs doping. A planar module consisting of 127 pairs of p-n single legs were assembled. At the temperature difference of 200 K, the output power and energy conversion efficiency reached 9.6 W and 6.2%, respectively. This strategy provides a feasible way to rationally design advanced n-type Bi 2 Te 2.7 Se 0.3 materials with excellent thermoelectric and mechanical properties induced by high-density heterogeneous interfaces.
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DOI
高影响因子
CARBON
·
2018
·
IF 7.082
Xian Wang,Zuju Ma,Lulu Chai,Leqiong Xu,Ziyi Zhu,Yue Hu,Jinjie Qian,Shaoming Huang
Growing demand for clean and renewable energy resources has sparked intensive research on the development of an effective strategy to prepare non-noble metal electrocatalysts for oxygen evolution reaction (OER). Herein, we report a new type of N-doped carbon coated CoP particle/carbon nanotube composite (CNT-NC-CoP) has been synthesized by in situ nucleation and growth of ZIF-67 nanoparticles onto carbon nanotubes, which subsequently is treated with carbonization and phosphorization. Unique hierarchical structure endows as-obtained CNT-NC-CoP with high specific surface area , abundant exposed active sites, quick ion diffusion path , and good electrical conductivity , thus exhibiting the highest electrocatalytic capability with the low overpotential of 251 mV at the current density of 10 mA cm −2 and remaining long-term durability (overlapping LSV curve after 10 h). Besides, density functional theory (DFT) calculations reveal that CoOOH/graphene charged surfaces are more effective for facilitating intermediates adsorption and improving the corresponding catalytic activity .
研究领域:
材料化学
·
电化学
·
纳米材料科学
·
能源催化
·
功能材料
·
计算材料学
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高影响因子
Science China-Materials
·
2021
·Vol. 65
·期 1
·43-50
·
IF 8.273
Xu Jingyi,Lai Chenling,Duan LiPing,Zhang Yuxuan,Xu Yifan,Bao Jianchun,Zhou Xiaosi
Transition-metal compounds have received extensive attention from researchers due to their high reversible capacity and suitable voltage platform as potassium-ion battery anodes. However, these materials commonly feature a poor conductivity and a large volume expansion, thus leading to underdeveloped rate capability and cyclic stability. Herein, we successfully encapsulated ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers (NCFs) via electrospinning, carbonization, and phosphorization (antimonization). The N-doped carbon fiber prevents the aggregation of nanoparticles, buffers the volume expansion of CoP and CoSb during charging and discharging, and improves the conductivity of the composite material. As a result, the CoP/NCF anode exhibits excellent potassium-ion storage performance, including an outstanding reversible capacity of 335 mA h g −1 , a decent capacity retention of 79.3% after 1000 cycles at 1 A g −1 and a superior rate capability of 148 mA h g −1 at 5 A g −1 , superior to most of the reported transition-metalbased potassium-ion battery anode materials.
研究领域:
材料科学
·
电化学储能
·
纳米材料
·
能源化学
·
功能纤维材料
·
先进电池技术
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高影响因子
危险品化学品经营许可证（带存储）