Low‐Temperature High‐Areal‐Capacity Rechargeable Potassium‐Metal Batteries DOI
Jiangchun Chen, Dandan Yu,

Qiaonan Zhu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(36)

Published: July 19, 2022

Abstract High mass loading and high areal capacity are key metrics for commercial batteries, which usually limited by the large charge‐transfer impedance in thick electrodes. This can be kinetically deteriorated under low temperatures, realization of high‐areal‐capacity batteries cold climates remains challenging. Herein, a low‐temperature rechargeable potassium–tellurium (K–Te) battery is successfully fabricated knocking down kinetic barriers cathode pairing it with stable anode. Specifically, situ electrochemical self‐reconstruction amorphous Cu 1.4 Te electrode realized simply coating micro‐sized on collector, significantly improving its ionic conductivity. Meanwhile, optimized electrolyte enables fast ion transportation K‐metal anode at current density capacity. Consequently, this K–Te achieves 1.25 mAh cm −2 −40 °C, greatly exceeds those most reported works. work highlights significance design engineering represents critical step toward practical applications batteries.

Language: Английский

Cyclic-anion salt for high-voltage stable potassium-metal batteries DOI Creative Commons
Yanyao Hu, Ling Fan, Apparao M. Rao

et al.

National Science Review, Journal Year: 2022, Volume and Issue: 9(10)

Published: July 9, 2022

Electrolyte anions are critical for achieving high-voltage stable potassium-metal batteries (PMBs). However, the common cannot simultaneously prevent formation of 'dead K' and corrosion Al current collector, resulting in poor cycling stability. Here, we demonstrate cyclic anion hexafluoropropane-1,3-disulfonimide-based electrolytes that can mitigate remarkably enhance stability PMBs. Particularly, even using low salt concentration (0.8 M) additive-free carbonate-based electrolytes, PMBs with a polyanion cathode (4.4 V) also exhibit excellent 200 cycles good capacity retention 83%. This noticeable electrochemical performance is due to highly efficient passivation ability on both anode surfaces. cyclic-anion-based electrolyte design strategy suitable lithium sodium-metal battery technologies.

Language: Английский

Citations

162
A tailored electrolyte for safe and durable potassium ion batteries DOI
Ling Fan,

Huabin Xie,

Yanyao Hu

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(1), P. 305 - 315

Published: Jan. 1, 2023

Electrolytes are critical for the safety and long-term cyclability of potassium ion batteries. Here, a low-concentration, non-flammable, weakly solvating electrolyte enables cycling stability K||graphite cell over 2 years.

Language: Английский

Citations

156
Weak Cation–Solvent Interactions in Ether‐Based Electrolytes Stabilizing Potassium‐ion Batteries DOI

Jinfan Li,

Yanyao Hu,

Huabin Xie

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(33)

Published: June 17, 2022

Abstract Conventional ether‐based electrolytes exhibited a low polarization voltage in potassium‐ion batteries, yet suffered from ion–solvent co‐intercalation phenomena graphite anode, inferior potassium‐metal performance, and limited oxidation stability. Here, we reveal that weakening the cation–solvent interactions could suppress behaviour, enhance improve Consequently, anode exhibits K + intercalation behaviour (K||graphite cell operates 200 cycles with 86.6 % capacity retention), potassium metal shows highly stable plating/stripping (K||Cu delivers 550 average Coulombic efficiency of 98.9 %) dendrite‐free (symmetric K||K over 1400 hours) properties, electrolyte high stability up to 4.4 V. The interaction tuning strategy provides promising method develop high‐performance beyond.

Language: Английский

Citations

131
Boosting the potassium-ion storage performance enabled by engineering of hierarchical MoSSe nanosheets modified with carbon on porous carbon sphere DOI

Meng‐Ting Cai,

Hehe Zhang, Yinggan Zhang

et al.

Science Bulletin, Journal Year: 2022, Volume and Issue: 67(9), P. 933 - 945

Published: Feb. 19, 2022

Language: Английский

Citations

125
Unraveling the Effect of Intrinsic Carbon Defects on Potassium Storage Performance DOI
Fei Yuan,

Conghao Shi,

Qiaoli Li

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(48)

Published: Sept. 28, 2022

Abstract Defects engineering is an attractive strategy to improve the potassium storage performance of carbon anodes. The current studies mainly focus on introduction external defects via heteroatom doping, however, exploration effect intrinsic caused by loss atoms or distortion in crystal lattice still lacking date. Hence, a series materials with different defect levels are developed soft‐template assisted method. It found that content synergistically determined application template and pyrolysis temperature, higher more likely expose enormous edge active sites. This greatly promotes K‐adsorption during surface‐induced capacitive process, therefore strong positive correlation between capacity/capacity retention confirmed. As result, electrode maximum realizes good capacity rate capability long cycle lifespan (225.9 mAh g −1 at 2 A over 2000 cycles). study offers insight into role performance.

Language: Английский

Citations

114
In situ formed uniform and elastic SEI for high-performance batteries DOI

Mingyuan Gu,

Apparao M. Rao, Jiang Zhou

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(3), P. 1166 - 1175

Published: Jan. 1, 2023

A uniform and elastic SEI was constructed by in situ electro-polymerization of functionalized ionic liquid electrolyte to passivate the electrode surface, thus making potassium or lithium based batteries exhibit excellent electrochemical performance.

Language: Английский

Citations

109
Single-crystalline Mn-based oxide as a high-rate and long-life cathode material for potassium-ion battery DOI Creative Commons

Jiarui Lv,

Bin Wang,

Jiaxin Hao

et al.

eScience, Journal Year: 2022, Volume and Issue: 3(1), P. 100081 - 100081

Published: Nov. 11, 2022

Mn-based oxides are promising cathode materials for potassium-ion batteries due to their high theoretical capacity and abundant raw materials. However, the anisotropic properties of conventional polycrystalline structures lead insufficient rate capability cycle life. Here, a single-crystal layered oxide, P3′-type K0.35Mn0.8Fe0.1Cu0.1O2 (KMFCO), is designed synthesized through bimetallic co-induction effect used as battery. Benefiting from unique structure that devoid grain boundaries, it achieves higher K+ transport reduced volume change during intercalation/deintercalation process. Accordingly, KMFCO delivers superior (52.9 ​mAh ​g−1 at 1000 ​mA ​g−1) excellent cycling stability (91.1% retention after 500 cycles ​g−1). A full cell assembled with graphite anode also exhibits reversible (81.2 100 performance (97% 300 cycles). The strategy developing may offer new pathway maintaining structural improving manganese oxide cathodes beyond.

Language: Английский

Citations

107
Electrochemical Activation, Sintering, and Reconstruction in Energy‐Storage Technologies: Origin, Development, and Prospects DOI
Dongmei Zhang, Junlin Lu,

Cunyuan Pei

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(19)

Published: April 8, 2022

Abstract Although there has been significant progress in designing electrode materials and exploring the electrochemical reaction mechanisms battery systems, morphological, structural, compositional evolution of during charge/discharge processes remain poorly understood. This review focuses on morphological cycling. First, design lithium‐ion batteries (LIBs), pointing out inevitable variations cycling, is discussed. To describe such variations, origins activation, sintering, reconstruction LIBs are introduced. Their development, providing a profound interpretation associated performance, situ characterization process, advanced means for self‐adaptive reconstruction, summarized. Subsequently, energy‐storage devices applicable to these concepts Finally, current research challenges, e.g., deficiencies available methods, limited information lack precise control over Furthermore, most likely areas where further breakthroughs may be achieved expected promote interest studies expand connection between facilitating development devices.

Language: Английский

Citations

105
Achieving Uniform Li Plating/Stripping at Ultrahigh Currents and Capacities by Optimizing 3D Nucleation Sites and Li2Se‐Enriched SEI DOI Creative Commons
Jiaqi Cao, Yonghui Xie, Yang Yang

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 9(9)

Published: Jan. 24, 2022

Lithium (Li) has garnered considerable attention as an alternative anodes of next-generation high-performance batteries owing to its prominent theoretical specific capacity. However, the commercialization Li metal (LMAs) is significantly compromised by non-uniform deposition and inferior electrolyte-anode interfaces, particularly at high currents capacities. Herein, a hierarchical three-dimentional structure with CoSe

Language: Английский

Citations

102
Recent Advances in Electrolytes for Potassium‐Ion Batteries DOI Creative Commons
Yifan Xu,

Tangjing Ding,

Dongmei Sun

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(6)

Published: Dec. 8, 2022

Abstract Potassium‐ion batteries (KIBs) are considered as the potential energy storage devices due to abundant reserves and low cost of potassium. In past decade, research on KIBs has generally focused electrode materials. However, since electrolytes also play a key role in determining cell performance, this review summarizes recent advances KIB design strategies. Specifically, includes five parts. First, organic liquid electrolyte is most widely used type for KIBs. Its two major components, salts solvents, have huge impact formation solid interphase performance Changes salts/solvents, introduction additives, concentration increase all positive effect electrolytes. Second, water‐in‐salt can effectively widen narrow electrochemical stability window aqueous Third, despite appealing properties, ionic not been applied its high cost. Fourth, solid‐state drawn much attention safety, current working improving their conductivity at room temperature. Lastly, perspectives provided support future development suitable high‐performance

Language: Английский

Citations

94