Recent advances in potassium metal batteries: electrodes, interfaces and electrolytes

Chemical Society Reviews, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review explores the latest advancements in potassium metal batteries, including electrode design, interface engineering, and electrolyte optimization to suppress dendrite formation enhance cycling stability.

Язык: Английский

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Cyano‐Functionalized Hybrid Electrode‐Electrolyte Interphases Enabled by Cyano‐Substituted Tetrafluorobenzene Derivatives Additives for High‐Voltage Lithium Metal Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Lithium metal batteries (LMBs) operating at high voltages are attractive for their energy storage capacity but suffer from challenges: cathode instability, electrolyte consumption, and lithium dendrite growth. Modulating the electrode/electrolyte interphase (EEI) with functional additives is a practical strategy. Herein, cyano (‐CN)‐functionalized hybrid EEI strategy proposed to develop electrolytes high‐voltage Li||LiNi 0.8 Co 0.1 Mn O 2 (Li||NCM811) battery ‐CN‐substituted tetrafluorobenzene derivatives (tetrafluorophthalonitrile (o‐TFPN), tetrafluoroisophthalonitrile (m‐TFPN)), tetrafluoroterephthalonitrile (p‐TFPN)) as additives. The results demonstrate that electrolyte‐containing additives, particularly o‐TFPN‐contained electrolyte, can derive robust, thermally stable (CEI) enriched LiF ‐CN groups. Furthermore, forms solid interface (SEI) Li O, LiF, ‐CN. group generates electrostatic attraction, guiding + flux, while ionic conductivity facilitate rapid deposition. excellent suppresses degradation, formation. Therefore, Li||NCM811 achieves performance over 200 cycles 4.6 V, Li||Li symmetric cell stably 350 h current density of 1 mA cm −2 .

Язык: Английский

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Inert salt-assisted solvent-free synthesis of high-entropy oxide towards high-performance lithium-ion batteries

Chemical Engineering Journal, Год журнала: 2024, Номер 484, С. 149791 - 149791

Опубликована: Фев. 17, 2024

Язык: Английский

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Modulating the Spin State to Stabilize the Surface and Bulk Structure for Durable 4.6 V LiCoO₂ Cathodes

Advanced Functional Materials, Год журнала: 2024, Номер 34(48)

Опубликована: Авг. 13, 2024

Abstract High‐voltage LiCoO 2 (LCO) attracts great interest due to its high theoretical capacity, however, the aggravated oxygen redox, Co dissolution, and lattice degradation at voltage potentially induce instability of crystal structural cathode–electrolyte interphase, can ultimately lead severe capacity fading. Herein, a design strategy spin modulation is presented stabilize surface bulk structure commercial (C‐LCO). The prepared high‐spin state via field elevates Co─O band gap, suppresses electronic compensation voltage, reduces side reactions reactive dissolved ions with electrolyte, which greatly restrains irreversible phase transition from O3 H1‐3 degeneration interphase. As result, spin‐modulated shows significantly improved electrochemical performances including discharge stable cycling behavior, enhanced rate capability. This work based on modification by apply other layered metal oxide cathodes, providing new avenue for developing high‐energy–density cathodes.

Язык: Английский

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Densification of Cathode/Electrolyte Interphase to Enhance Reversibility of LiCoO₂ at 4.65 V

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 29, 2024

Abstract For LiCoO 2 (LCO) operated beyond 4.55 V (vs Li/Li + ), it usually suffers from severe surface degradation. Constructing a robust cathode/electrolyte interphase (CEI) is effective to alleviate the above issues, however, correlated mechanisms still remain vague. Herein, progressively reinforced CEI realized via constructing Zr─O deposits (ZrO and Li ZrO 3 ) on LCO (i.e., Z‐LCO). Upon cycle, these can promote decomposition of LiPF 6 , convert highly dispersed Zr─O─F species. In particular, chemical reaction between LiF species further leads densification CEI, which greatly reinforces its toughness conductivity. Combining thin rock‐salt layer Z‐LCO, several benefits are achieved, including stabilizing lattice oxygen, facilitating interface transport kinetics, enhancing reversibility O3/H1‐3 phase transition, etc. As result, Z‐LCO||Li cells exhibit high capacity retention 84.2% after 1000 cycles in 3–4.65 V, 80.9% 1500 3–4.6 rate 160 mAh g −1 at 16 C (1 = 200 mA ). This work provides new insight for developing advanced cathodes.

Язык: Английский

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Wide Temperature Electrolytes for Lithium Batteries: Solvation Chemistry and Interfacial Reactions

Small Methods, Год журнала: 2024, Номер 8(11)

Опубликована: Апрель 22, 2024

Abstract Improving the wide‐temperature operation of rechargeable batteries is crucial for boosting adoption electric vehicles and further advancing their application scope in harsh environments like deep ocean space probes. Herein, recent advances electrolyte solvation chemistry are critically summarized, aiming to address long‐standing challenge notable energy diminution at sub‐zero temperatures rapid capacity degradation elevated (>45°C). This review provides an in‐depth analysis fundamental mechanisms governing Li‐ion transport process, illustrating how these insights have been effectively harnessed synergize with high‐capacity, high‐rate electrodes. Another critical part highlights interplay between interfacial reactions, as well stability resultant interphases, particularly employing ultrahigh‐nickel layered oxides cathodes high‐capacity Li/Si materials anodes. The detailed examination reveals factors pivotal mitigating fade, thereby ensuring a long cycle life, superior rate capability, consistent high‐/low‐temperature performance. In latter part, comprehensive summary situ/operational presented. holistic approach, encompassing innovative design, interphase regulation, advanced characterization, offers roadmap battery technology extreme environmental conditions.

Язык: Английский

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Understanding and Design of Cathode–Electrolyte Interphase in High‐Voltage Lithium–Metal Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июнь 10, 2024

Abstract The development of lithium–metal batteries (LMBs) has emerged as a mainstream approach for achieving high‐energy‐density energy storage devices. stability electrochemical interfaces plays an essential role in realizing stable and long‐life LMBs. Despite extensive comprehensive research on the lithium anode interface, there is limited focus cathode particularly regarding high‐voltage transition metal oxide materials. In this review, challenges associated with developing materials are first discussed. Characterization techniques understanding composition structure cathode–electrolyte interphase (CEI) then introduced. Subsequently, recent developments electrolyte design interface modification constructing CEI summarized. Finally, perspectives future trends This review can offer valuable guidance designing CEI, pushing forward

Язык: Английский

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Temperature‐Responsive Formation Cycling Enabling LiF‐Rich Cathode‐Electrolyte Interphase

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(41)

Опубликована: Июль 16, 2024

Formation of LiF-rich cathode-electrolyte interphase is highly desirable for wide-temperature battery, but its application hindered by the unwanted side reactions associated with conventional method introducing fluorinated additives. Here, we developed an additive-free strategy to produce cathode electrolyte (CEI) low-temperature formation cycling. Using LiNi

Язык: Английский

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Unlocking 4.7 V LiCoO₂ with a Counterintuitive Low-Concentration Fluoroborate Dual-Salt Electrolyte by Anion-Derived Interfacial Chemistry

ACS Energy Letters, Год журнала: 2025, Номер unknown, С. 1245 - 1254

Опубликована: Фев. 14, 2025

Язык: Английский

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Simultaneously Constructing Stable Cathode/Solid-Electrolyte Interphase by Trimethylsilyl Trifluoromethanesulfonate Additive for High-voltage Lithium-Metal Batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104241 - 104241

Опубликована: Апрель 1, 2025

Язык: Английский

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