A well-dispersed OV-NiCo2O4 nanosphere modified separator for Li–S batteries DOI

Yumeng Gao,

Siyu Liu,

Jiudi Zhang

и другие.

Dalton Transactions, Год журнала: 2023, Номер 52(44), С. 16513 - 16518

Опубликована: Янв. 1, 2023

The commercialization of lithium-sulfur batteries is facing great challenges, such as the "shuttle effect" and poor conductivity sulfur Li2S2/Li2S, so it extremely important to design new separator-modified materials with fast charge transfer capability effective immobilization polysulfides (LiPSs) facilitate their conversion address these challenges. In this paper, we propose a simple way synthesize NiCo2O4 nanospheres containing oxygen vacancies (OV-NiCo2O4 NSs) thus modify separator. synthesized OV-NiCo2O4 NSs accelerated LiPSs through strong chemical interactions. addition, introduction provided more active sites for LiPSs, which improved electron conduction rate ion transport. Based on above advantages, battery an modified separator showed excellent electrochemical performance (the initial capacity was 801 mA h g-1 at 0.5 C, specific discharge maintained 695 after 500 cycles, retention high 87%).

Язык: Английский

Long-Lasting Zinc–Iodine Batteries with Ultrahigh Areal Capacity and Boosted Rate Capability Enabled by Nickel Single-Atom Electrocatalysts DOI
Lianbo Ma, Guoyin Zhu, Ziwei Wang

и другие.

Nano Letters, Год журнала: 2023, Номер 23(11), С. 5272 - 5280

Опубликована: Июнь 1, 2023

Zinc-iodine (Zn-I2) batteries have garnered significant attention for their high energy density, low cost, and inherent safety. However, several challenges, including polyiodide dissolution shuttling, sluggish iodine redox kinetics, electrical conductivity, limit practical applications. Herein, we designed a highly efficient electrocatalyst Zn-I2 by uniformly dispersing Ni single atoms (NiSAs) on hierarchical porous carbon skeletons (NiSAs-HPC). In situ Raman analysis revealed that the conversion of soluble polyiodides (I3- I5-) was significantly accelerated using NiSAs-HPC because remarkable electrocatalytic activity NiSAs. The resulting with NiSAs-HPC/I2 cathodes delivered exceptional rate capability (121 mAh g-1 at 50 C), ultralong cyclic stability (over 40 000 cycles C). Even under 11.6 mg cm-2 iodine, still exhibited an impressive capacity retention 93.4% 141 after 10 C.

Язык: Английский

Процитировано

99
Single‐atom materials: The application in energy conversion DOI Creative Commons
Chenxi Zhu, Jiarui Yang, Jiangwei Zhang

и другие.

Interdisciplinary materials, Год журнала: 2024, Номер 3(1), С. 74 - 86

Опубликована: Янв. 1, 2024

Abstract Single‐atom materials (SAMs) have become one of the most important power sources to push field energy conversion forward. Among main types energy, including thermal electrical solar and biomass SAMs realized ultra‐high efficiency show an appealing future in practical application. More than high activity, uniform active sites also provide a convincible model for chemists design comprehend mechanism behind phenomenon. Therefore, we presented insightful review application single‐atom material conversion. The challenges (e.g., accurate synthesis application) directions machine learning efficient design) applications are included, aiming guidance research next step.

Язык: Английский

Процитировано

47
Energizing Robust Sulfur/Lithium Electrochemistry via Nanoscale-Asymmetric-Size Synergism DOI
Youzhang Huang, Jiantao Li, Yinggan Zhang

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Sluggish redox kinetics and dendrite growth perplex the fulfillment of efficient electrochemistry in lithium–sulfur (Li–S) batteries. The complicated sulfur phase transformation sulfur/lithium diversity necessitate an all-inclusive approach catalyst design. Herein, a compatible mediator with nanoscale-asymmetric-size configuration by integrating Co single atoms defective CoTe2–x (CoSA-CoTe2–x@NHCF) is elaborately developed for regulating synchronously. Substantial theoretical analyses reveal that exhibits higher catalytic activity long-chain polysulfide Li2S decomposition, while monodispersed sites are more effective boosting reduction to regulate deposition. Such cascade catalysis endows CoSA-CoTe2–x@NHCF all-around service "trapping-conversion-recuperation" species during whole reaction. Furthermore, it demonstrated situ transmission electron microscopy initially formed electronic-conductive ionic-conductive Li2Te provide sufficient lithiophilic homogeneous Li plating stripping markedly suppressed growth. Consequently, coupling interlayer Li@CoSA-CoTe2–x@NHCF anode, constructed Li–S full batteries deliver superior cycling stability rate performance, flexible pouch cell stable performance at 0.3 C. gained insights into synergistic effect asymmetric-size structures pave way integrated design advanced systems.

Язык: Английский

Процитировано

4
Structural Regulation Strategies of Atomic Cobalt Catalysts for Oxygen Electrocatalysis DOI Open Access
Mengyu Chen, Jingqi Guan

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Oxygen electrocatalysis is a core reaction in renewable energy devices, greatly promoting the transformation and upgrading of structure. Nonetheless, performance conversion devices hindered by large overpotential slow kinetics oxygen electrocatalytic reactions. Recently, single‐atom catalysts (SACs) have emerged as promising contenders field because their exceptional metal atom utilization, distinctive coordination environment, adjustable electronic properties. This review presents latest advancements design Co‐based SACs for electrocatalysis. First, OER ORR mechanisms are introduced. Subsequently, strategies regulating structure summarized three aspects, including centers, support carriers. A particular emphasis given to relationship between properties catalysts. Afterward, applications explored. Ultimately, challenges prospects prospected.

Язык: Английский

Процитировано

4
Designing metal sulfide-based cathodes and separators for suppressing polysulfide shuttling in lithium-sulfur batteries DOI
Guoyin Zhu,

Qingzhu Wu,

Xianghua Zhang

и другие.

Nano Research, Год журнала: 2023, Номер 17(4), С. 2574 - 2591

Опубликована: Ноя. 3, 2023

Язык: Английский

Процитировано

28
Understanding the chemistry of mesostructured porous nanoreactors DOI
Yuzhu Ma, Haitao Li, Jian Liu

и другие.

Nature Reviews Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Окт. 23, 2024

Язык: Английский

Процитировано

14
Theory-guided optimization of coordination sites via d-band modulation for efficient single-atomic Li–S catalysis DOI

Miaoyu Lu,

Tianran Yan,

Yifan Ding

и другие.

Energy storage materials, Год журнала: 2024, Номер 70, С. 103458 - 103458

Опубликована: Май 10, 2024

Язык: Английский

Процитировано

13
Co single-atom catalyst on ordered macro–microporous structure as separator for Li-S battery DOI
Wenhui Cao, Mengyu Liu, Kai Zhang

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 684, С. 189 - 196

Опубликована: Янв. 11, 2025

Язык: Английский

Процитировано

2
Rational Design of Janus Metal Atomic‐Site Catalysts for Efficient Polysulfide Conversion and Alkali Metal Deposition: Advances and Prospects DOI

Guangfu Dai,

Shou‐Zhe Li,

Menglin Shi

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(25)

Опубликована: Фев. 1, 2024

Abstract Although metal–sulfur batteries (M–S batteries, M = Li, Na, K) are promising next‐generation energy‐storage devices because of ultrahigh theoretical energy density, low cost, and environmentally friendliness, their practical applications significantly hindered by the shuttle effect polysulfides growth alkali metal dendrites. These issues can be mitigated using Janus atomic‐site catalysts, which possess maximum atom utilization efficiency (≈100%), adjustable electronic structures, tailorable catalytic sites, thereby effectively improving electrochemical performance M–S batteries. In this review, recent progress development atomic‐sites on properties, synthesis, characterizations reviewed. Then, advances in catalysts intended for accelerating polysulfide conversion regulating deposition, briefly introducing working principles systematically summarized. Furthermore, a high emphasis is placed effective regulation strategies rational design Finally, current challenges future research directions also presented to develop high‐efficiency high‐energy

Язык: Английский

Процитировано

9
Coordinatively Unsaturated Co Single-Atom Catalysts Enhance the Performance of Lithium–Sulfur Batteries by Triggering Strong d–p Orbital Hybridization DOI
Lei Chen, Jing Xia, Zhuangzhuang Lai

и другие.

ACS Nano, Год журнала: 2024, Номер 18(45), С. 31123 - 31134

Опубликована: Окт. 28, 2024

The catalytic activities displayed by single-atom catalysts (SACs) depend on the coordination structure. SACs supported carbon materials often adopt saturated structures with uneven distributions because they require high-temperature conditions during synthesis. Herein, bisnitrogen-chelated Co that are coordinatively unsaturated prepared integrating a complex into conjugated microporous polymer (CMP-CoN2). Compared analogues, i.e., tetranitrogen-chelated (denoted as CMP-CoN4), CMP-CoN2 exhibits higher electrocatalytic activity in polysulfide conversions due to an enhanced hybridization between 3d orbitals of atoms and 3p S polysulfide. As result, sulfur cathodes CoN2 deliver outstanding performance metrics, including high specific capacity (1393 mA h g–1 at 0.1 C), superior rate (673.2 6 low decay (of only 0.045% per cycle 2 C over 1000 cycles). They also outperform contain CMP-CoN4 or CMPs devoid SACs. This work reveals how is affected their structures, rules underpin structure–activity relationship may be extended designing electrocatalysts for use other applications.

Язык: Английский

Процитировано

8