Surface Redox Pseudocapacitance Boosting Vanadium Nitride for High‐Power and Ultra‐Stable Potassium‐Ion Capacitors DOI

Chengrong Xu,

Jinglin Mu, Tong Zhou

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(38)

Published: July 10, 2022

Abstract Developing a high‐rate and stable battery‐type anode to match the capacitor‐type cathode is critical issue for potassium ion capacitors (PICs). Surface‐redox pseudocapacitive materials can meet this demand due their fast surface Faradaic reaction kinetics superior structure stability during charging–discharging. Herein, free‐standing by growing VN particle‐composed nanosheets on carbon fibers (VN@CFs) developed. The VN@CFs endowed with high reversible capacity of 245.8 mA h g –1 at 0.05 A , rate performance 102.7 6.0 long‐term stability. Based in situ XRD, ex XPS TEM characterizations, density functional theory calculations, it proved that storage derives from surface‐redox mechanism between K + rather than an intercalation or conversion reaction. As expected, as‐assembled PICs based show ultrahigh power output 10.9 kW kg when keeping energy 49.2 Wh excellent retention 86.8% after 15000 cycles.

Language: Английский

Maximally exploiting active sites on Yolk@shell nanoreactor: Nearly 100% PMS activation efficiency and outstanding performance over full pH range in Fenton-like reaction DOI

Shouchun Ma,

Dong Yang,

Yina Guan

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 316, P. 121594 - 121594

Published: June 8, 2022

Language: Английский

Citations

142
Hierarchical Architecture Engineering of Branch‐Leaf‐Shaped Cobalt Phosphosulfide Quantum Dots: Enabling Multi‐Dimensional Ion‐Transport Channels for High‐Efficiency Sodium Storage DOI
Wenxi Zhao,

Xiaoqing Ma,

Lixia Gao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)

Published: Aug. 28, 2023

Abstract New‐fashioned electrode hosts for sodium‐ion batteries (SIBs) are elaborately engineered to involve multifunctional active components that can synergistically conquer the critical issues of severe volume deformation and sluggish reaction kinetics electrodes toward immensely enhanced battery performance. Herein, it is first reported single‐phase CoPS, a new metal phosphosulfide SIBs, in form quantum dots, successfully introduced into leaf‐shaped conductive carbon nanosheet, which be further situ anchored on 3D interconnected branch‐like N‐doped nanofiber (N‐CNF) construct hierarchical branch‐leaf‐shaped CoPS@C@N‐CNF architecture. Both double decorations ultrafine crystal CoPS in‐this exquisite architecture hold many significant superiorities, such as favorable train‐relaxation, fast interfacial ion‐migration, multi‐directional migration pathways, sufficiently exposed Na + ‐storage sites. In consequence, affords remarkable long‐cycle durability over 10 000 cycles at 20.0 A g −1 superior rate capability. Meanwhile, CoPS@C@N‐CNF‐based full cell renders potential proof‐of‐feasibility practical applications consideration its high long‐term cyclic lifespan with reversible capacity. Moreover, phase transformation mechanism fundamental springhead performance disclosed by X‐ray diffraction, ex high‐resolution TEM, theoretical calculations.

Language: Английский

Citations

82
Self-supporting NiSe2@BCNNTs electrode for High-Performance sodium ion batteries DOI
Zhenyan Liang, Huayao Tu, Kang Zhang

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 437, P. 135421 - 135421

Published: Feb. 22, 2022

Language: Английский

Citations

75
Nonmetallic Se/N Co‐Doped Amorphous Carbon Anode Collaborates to Realize Ultra‐High Capacity and Fast Potassium Storage for Potassium Dual‐Ion Batteries DOI

Shuhua Guan,

Jiwei Zhou,

Shuling Sun

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(21)

Published: Jan. 9, 2024

Abstract Heteroatom doping in carbon‐based anode materials is crucial to improve their capacity and promoting the practical application of low‐cost potassium‐ion batteries (KIBs). Herein, selenium/nitrogen co‐doped amorphous carbon nanocluster (SeN‐ACN) anodes exhibit an ultra‐high reversible 621 mAh g −1 at 0.75 C (225 mA ) a retention 93% after 2000 cycles 5 C, which represent remarkable achievement potassium storage nonmetallic doped materials. This attributed synergistic effects Se/N co‐doping anchoring on ions. As proof concept, potassium‐based dual‐ion battery (K‐DIB), consists SeN‐ACN graphite cathode, demonstrates high 118 150 with cut‐off voltage 5.2 V. Moreover, it presents excellent long‐term cycling performance, 70% 500 cycles, among best reported results K‐DIBs.

Language: Английский

Citations

74
Size controllable CoNiP nanoparticle supported on porous carbon for highly-efficient electrocatalytic overall water splitting DOI
Guohua Li,

Meitong Zhao,

Fan Yang

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 105, P. 1 - 9

Published: Jan. 18, 2025

Language: Английский

Citations

2
Recent advances in transition metal chalcogenides for lithium-ion capacitors DOI
Lei Wang, Xiong Zhang, Chen Li

et al.

Rare Metals, Journal Year: 2022, Volume and Issue: 41(9), P. 2971 - 2984

Published: July 5, 2022

Language: Английский

Citations

63
Synthesis of multicore-shell FeS2@C nanocapsules for stable potassium-ion batteries DOI
Zhuangzhuang Zhang, Liping Duan, Yifan Xu

et al.

Journal of Energy Chemistry, Journal Year: 2022, Volume and Issue: 73, P. 126 - 132

Published: May 2, 2022

Language: Английский

Citations

58
Sulfur and nitrogen codoped cyanoethyl cellulose‐derived carbon with superior gravimetric and volumetric capacity for potassium ion storage DOI Creative Commons
Guangzeng Cheng, Wenzhe Zhang, Wei Wang

et al.

Carbon Energy, Journal Year: 2022, Volume and Issue: 4(5), P. 986 - 1001

Published: June 20, 2022

Abstract We fabricated sulfur and nitrogen codoped cyanoethyl cellulose‐derived carbons (SNCCs) with state‐of‐the‐art electrochemical performance for potassium ion battery (PIB) capacitor (PIC) anodes. At 0.2, 0.5, 1, 2, 5, 10 A g −1 , the SNCC shows reversible capacities of 369, 328, 249, 208, 150, 121 mA h respectively. Due to a high packing density 1.01 cm −3 volumetric are also uniquely favorable, being 373, 331, 251, 210, 151, 122 at these currents, promising initial Coulombic efficiency 69.0% extended cycling stability 99.8% capacity retention after 1000 cycles. As proof principle, an SNCC‐based PIC is tested, achieving 94.3 Wh kg 237.5 W sustaining over 6000 cycles 30 84.5% retention. The internal structure S N based on highly dilated defective graphene sheets arranged into nanometer‐scale walls. Using baseline S‐free carbon comparison (termed NCC), role doping resultant was elucidated. According galvanostatic intermittent titration technique impedance spectroscopy analyses, as well COMSOL simulations, this promotes rapid solid‐state diffusion ions solid electrolyte interphase that stable during cycling. X‐ray diffraction used probe storage mechanisms in SNCC, establishing intercalation presence KC 36 24, 8 phases low voltages.

Language: Английский

Citations

55
Hierarchical FeS2 cathode with suppressed shuttle effect for high performance magnesium-ion batteries DOI
Jianbiao Wang, Gaoliang Yang, Tanmay Ghosh

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 119, P. 109082 - 109082

Published: Nov. 10, 2023

Language: Английский

Citations

43
Spatially Confined “Edge‐to‐Edge” Strategy for Achieving Compact Na+/K+ Storage: Constructing Hetero‐Ni/Ni3S2 in Densified Carbons DOI

Zining Sun,

Huanyu Liang,

Huanlei Wang

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(32)

Published: May 26, 2022

Abstract Transition metal sulfides (TMS) are considered as promising anodes for sodium/potassium ion batteries (SIBs/PIBs), and compositing TMS with conductive nanocarbons is an effective mitigation improving rate performance cycling stability. However, such a coupling strategy often decreases the tap density therefore volumetric energy of electrode. To achieve fast electron/ion transport high capacity simultaneously, herein, compact nanostructure hetero Ni‐Ni 3 S 2 nanoparticles embedded in densified S‐doped carbon matrix (Ni‐Ni @SC) constructed via spatially confined “edge‐to‐edge” strategy. Experimental theoretical results confirm that metallic Ni provide electron pathways at two scales, while abundant heterojunctions strong electric fields promote migration Na/K adsorption. As anode SIBs/PIBs, @SC exhibits superior capability (289/197 mA h g −1 A ), stable (88.1/86.2% retention after 100 cycles), exceptional (1048/850 mAh cm −3 0.05 ). The impressive energy‐power characteristics further confirmed full cell hybrid capacitors. reported might be adapted to construction various binary and/or ternary sulfide dense electrodes advanced storage devices.

Language: Английский

Citations

41