Reclaiming Inactive Lithium with a Triiodide/Iodide Redox Couple for Practical Lithium Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(42), P. 22990 - 22995

Published: Aug. 20, 2021

Abstract High‐energy‐density lithium (Li) metal batteries suffer from a short lifespan owing to apparently ceaseless inactive Li accumulation, which is accompanied by the consumption of electrolyte and active reservoir, seriously deteriorating cyclability batteries. Herein, triiodide/iodide (I 3 − /I ) redox couple initiated stannic iodide (SnI 4 demonstrated reclaim Li. The reduction I converts into soluble LiI, then diffuses cathode side. oxidation LiI delithiated transforms lithiation state regenerates , reclaiming ion regenerated engages further reactions. Furthermore, formation Sn mitigates corrosion on reservoir sacrificially. In working | LiNi 0.5 Co 0.2 Mn 0.3 O 2 batteries, accumulated significantly reclaimed reversible couple, improving twice. This work initiates creative solution for prolonging practical

Language: Английский

---

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(17)

Published: Jan. 17, 2022

Abstract The exploration of facile, low‐cost, and universal synthetic strategies for high‐performance aqueous energy storage is extremely urgent. electrochemical activation tactic an emerging technique that can turn inert or weakly active substances into highly materials via in situ ex treatment, which receiving increasing attention due to its advantages facile operation, variable control, high efficiency, flexibility, wide applicability. This review first discusses the definition general implementing methods tactic, as well fundamental mechanisms, then summarizes applications various systems, including rechargeable batteries capacitors with different charge carriers. remaining challenges, potential solutions, further perspectives are discussed finally. It believed this will provide a timely summary new inspiration cutting‐edge research on advanced devices.

Language: Английский

---

Stable Anode‐Free All‐Solid‐State Lithium Battery through Tuned Metal Wetting on the Copper Current Collector

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(8)

Published: Nov. 29, 2022

A stable anode-free all-solid-state battery (AF-ASSB) with sulfide-based solid-electrolyte (SE) (argyrodite Li6 PS5 Cl) is achieved by tuning wetting of lithium metal on "empty" copper current-collector. Lithiophilic 1 µm Li2 Te synthesized exposing the collector to tellurium vapor, followed in situ Li activation during first charge. The significantly reduces electrodeposition/electrodissolution overpotentials and improves Coulombic efficiency (CE). During continuous electrodeposition experiments using half-cells (1 mA cm-2 ), accumulated thickness electrodeposited Te-Cu more than 70 µm, which foil counter-electrode. Full AF-ASSB NMC811 cathode delivers an initial CE 83% at 0.2C, a cycling above 99%. Cryogenic focused ion beam (Cryo-FIB) sectioning demonstrates uniform microstructure, no signs voids or dendrites collector-SE interface. Electrodissolution complete, remaining structurally adherent. By contrast, unmodified Cu current-collector promotes inhomogeneous electrodeposition/electrodissolution, electrochemically inactive "dead metal," that extend into SE, thick non-uniform solid electrolyte interphase (SEI) interspersed pores. Density functional theory (DFT) mesoscale calculations provide complementary insight regarding nucleation-growth behavior. Unlike conventional liquid-electrolyte batteries, role current collector/support lithiophilicity has not been explored for emerging AF-ASSBs.

Language: Английский

---

Strategies to improve the performance of phosphide anodes in sodium-ion batteries

Nano Energy, Journal Year: 2021, Volume and Issue: 90, P. 106475 - 106475

Published: Aug. 31, 2021

Language: Английский

---

Self‐Assembled Protective Layer by Symmetric Ionic Liquid for Long‐Cycling Lithium–Metal Batteries

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(13)

Published: Feb. 10, 2022

Abstract Modulating lithium metal deposition is vital for the realization of stable and energy‐dense Li–metal batteries. Ionic liquid (IL) has been regarded as a promising electrolyte additive uniform Li because its cation moiety forms lithiophobic protective layer on protuberant tips. Despite recent advances in ILs batteries, rational designs IL additives are still their infancy, further improvement required. Here, new class self‐assembled based design molecule enabling high‐performance batteries reported. For first time, symmetric side chains introduced to cations. This creates tips, resulting smooth Li. Thus, enables cycling Li–LiFePO 4 Li–LiNi 0.6 Co 0.2 Mn O 2 (NCM622) with an average Coulombic efficiency ≈ 99.8% over 600 cycles. In addition, practical thin (40 µ m)‐NCM622 cell energy density 658 Wh kg ‐1 cathode mass coin‐type battery. work proposes protocol IL‐based provides prospective way highly efficient, long‐lasting

Language: Английский

---

Stabilizing Li₄SnS₄ Electrolyte from Interface to Bulk Phase with a Gradient Lithium Iodide/Polymer Layer in Lithium Metal Batteries

Nano Letters, Journal Year: 2022, Volume and Issue: 22(20), P. 8346 - 8354

Published: Oct. 11, 2022

Sulfide electrolytes promise superior ion conduction in all-solid-state lithium (Li) metal batteries, while suffering harsh hurdles including interior dendrite growth and instability against Li moist air. A prerequisite for solving such issues is to uncover the nature of Li/sulfide interface. Herein, air-stable Li4SnS4 (LSS) as a prototypical sulfide electrolyte selected visualize dynamic evolution failure interface by cryo-electron microscopy. The interfacial parasitic reaction (2Li + 2Li4SnS4 = 5Li2S Sn2S3) validated direct detection randomly distributed Li2S Sn2S3 crystals. bifunctional buffering layer consequently introduced self-diffusion halide into LSS. Both grain boundaries LSS have been stabilized, eliminating growing path dendrites. enables durability symmetric cell (1500 h) high-capacity retention LiFePO4 full-cell (95%). This work provides new insights hierarchical design electrolytes.

Language: Английский

---

Advances in carbon materials for stable lithium metal batteries

New Carbon Materials, Journal Year: 2022, Volume and Issue: 37(1), P. 1 - 24

Published: Feb. 1, 2022

Language: Английский

---

Development of All-Solid-State Li-Ion Batteries: From Key Technical Areas to Commercial Use

Batteries, Journal Year: 2023, Volume and Issue: 9(3), P. 157 - 157

Published: March 1, 2023

Innovation in the design of Li-ion rechargeable batteries is necessary to overcome safety concerns and meet energy demands. In this regard, a new generation (LIBs) form all-solid-state (ASSBs) has been developed, attracting great deal attention for their high-energy density excellent mechanical-electrochemical stability. This review describes current state research development on ASSB technology. To end, study literature patents as well market analysis over last two decades were carried out, highlighting how scientific achievements have informed application commercially profitable ASSBs. Analyzing registered past 20 years revealed that number them had increased exponentially-from only few per year early 2000 more than 342 2020. Published topic declare solid-state electrolyte (SSE) be main component ASSBs, most patented examples are referred solid inorganic electrolytes (SIEs), followed by polymer (SPEs) hybrid (SHEs) popularity. Investigation company websites, social media profiles, reports, academic publications identified 93 companies associated with A list leading businesses battery sector was compiled, out which 36 provided information units product portfolio detailed analysis.

Language: Английский

---

Designing biomass-integrated solid polymer electrolytes for safe and energy-dense lithium metal batteries

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(7), P. 2804 - 2824

Published: Jan. 1, 2023

By illustrating the correlation between biomass types/properties and material design of solid polymer electrolytes, this review provides an iterative historical perspective prospects on development biomass-integrated electrolytes.

Language: Английский

---

Challenges and Advances in Rechargeable Batteries for Extreme‐Condition Applications

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

Published: Oct. 17, 2023

Abstract Rechargeable batteries are widely used as power sources for portable electronics, electric vehicles and smart grids. Their practical performances are, however, largely undermined under extreme conditions, such in high‐altitude drones, ocean exploration polar expedition. These environmental conditions not only bring new challenges but also incur unique battery failure mechanisms. To fill the gap, it is of great importance to understand mechanisms different figure out key parameters that limit performances. In this review, authors start by investigating from viewpoints ionic/charge transfer, material/interface evolution electrolyte degradation conditions. This followed engineering approaches through electrode materials design, modification component optimization enhance Finally, a short perspective provided about future development rechargeable

Language: Английский

---