Single‐Crystalline LiMg Alloy Anode for Deep Cycling All Solid State Lithium Metal Batteries DOI Open Access
Linxue Zhang, Dehua Xu, Hao Chen

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 24, 2024

Abstract All solid state lithium metal batteries (ASSLMBs) with enhanced energy density has driven the exploration of Li‐alloy anodes such as Li‐Mg alloy owing to its solid‐solution structure and high theoretical specific capacity. But Li atom diffusion limitation on electrode surface further leads sluggish atoms transport dynamics. Herein, single‐crystalline (110)‐oriented 0.9 Mg 0.1 (denoted LiMg(110)) anode is obtained by a tailored melt‐annealing procedure tackle above issues. Theoretical analyses experimental results demonstrate that crystallographic structural (110) orientation LiMg can facilitate guarantee stability during deep cycling. As result, LiMg(110) exhibits longer cycle life lower overpotential than polycrystalline at current densities areal capacities in symmetric cells. A critical (CCD) forefront 2.5 mA cm −2 achieved 3 InCl 6 (LIC) solid‐state system. The ASSLMB capacity (3.8 mAh ), (0.76 low negative/positive N/P ratio (2.14) achieves exceptional cyclability over 160 cycles. outcomes highlight promising regulation strategy toward practical applications high‐performance batteries.

Language: Английский

Designing Current Collectors to Stabilize Li Metal Anodes DOI Creative Commons

Zhimeng Hao,

Yong Lü, Gaojing Yang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.

Language: Английский

Citations

7
Electrolyte Engineering to Construct Robust Interphase with High Ionic Conductivity for Wide Temperature Range Lithium Metal Batteries DOI
Yanan Li, Bo Wen, Na Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Abstract Unstable interphase formed in conventional carbonate‐based electrolytes significantly hinders the widespread application of lithium metal batteries (LMBs) with high‐capacity nickel‐rich layered oxides (e.g., LiNi 0.8 Co 0.1 Mn O 2 , NCM811) over a wide temperature range. To balance ion transport kinetics and interfacial stability range, herein bifunctional electrolyte (EAFP) tailoring electrode/electrolyte 1,3‐propanesultone as an additive was developed. The resulting cathode‐electrolyte inorganic inner layer organic outer possesses high mechanical flexibility, alleviating stress accumulation maintaining structural integrity NCM811 cathode. Meanwhile, inorganic‐rich solid inhibits side reactions facilitates fast Li + transport. As result, Li||Li cells exhibit stable performance extensive temperatures low overpotentials, especially achieving long lifespan 1000 h at 30 °C. Furthermore, optimized EAFP is also suitable for LiFePO 4 LiCO cathodes (1000 cycles, retention: 67 %). Li||NCM811 graphite||NCM811 pouch lean (g/Ah grade) operate stably, verifying broad electrode compatibility EAFP. Notably, can climate range from −40 °C to 60 This work establishes new guidelines regulation by all‐weather LMBs.

Language: Английский

Citations

10
Macroscopically uniform interface layer with Li+ conductive channels for high-performance Li metal batteries DOI Creative Commons
Qian Chen,

Binyin Gao,

Zhilin Yang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 20, 2024

The numerous grainboundaries solid electrolyte interface, whether naturally occurring or artificially designed, leads to non-uniform Li metal deposition and consequently results in poor full-battery performance. Herein, a lithium-ion selective transport layer is reported achieve highly efficient dendrite-free lithium anode. layer-by-layer assembled protonated carbon nitride nanosheets present uniform macroscopical structure without grainboundaries. with ordered pores basal plane provides high-speed channels low tortuosity. Consequently, the 324 Wh kg−1 pouch cell exhibits 300 stable cycles capacity retention of 90.0% an average Coulombic efficiency up 99.7%. ultra-dense anode makes current collector-free possible, achieving high energy density long cycle life 7 Ah (506 kg−1, 160 cycles). Thus, it proved that macroscopically interface conductive could battery promising application potential. Here, authors report grain boundary-free microscopic + -selective enables deposition, resulting kg−1) (160 cycles)

Language: Английский

Citations

10
Ultrathin Yet Robust Quasi‐Solid‐State Electrolyte with Ion‐Selective Channel for Superior Alkali‐Metal Batteries DOI Open Access
Dongjiang Chen, Wei Chen, Bowen Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Abstract Solid‐state alkali‐metal batteries experience dendrite growth require a robust solid‐electrolyte interphase (SEI) and high deformation resistance of electrolytes to stabilize the electrolyte/metal interface. However, traditional dual‐ion polymer electrolyte with large thickness has low ion transference number insufficient mechanical stability, leading concentration gradients brittle SEI that fails suppress dendrite's growth. Herein, an ultrathin yet single‐ion conducting quasi‐solid‐state is presented by copolymerizing sodium (4‐vinylphenyl)sulfonate poly(vinylidene fluoride‐co‐hexafluoropropylene) (abbreviated as S‐PVSA) through atom transfer radical polymerization. The developed S‐PVSA gel exhibits (up 0.95) achieves tensile strength up 45.3 MPa even at (11 µm). When assembled in alkali metal batteries, Na||Na cell demonstrates exceptional stability over 8000 h cycling (>11 months), 3 V 2 (PO 4 ) retains 97% its initial capacity after 1400 cycles. Li||Li enables long‐term reversibility (over 1200 h) stable lithium plating/stripping current density 1 mA cm −2 60 °C. This work suggests new potential engineering rejuvenate batteries.

Language: Английский

Citations

2
Understanding and Regulating the Mechanical Stability of Solid Electrolyte Interphase in Batteries DOI Open Access
Jialin Li, Yanan Wang,

Shu‐Yu Sun

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

Abstract The unstable interface between reactive anodes and electrolytes in batteries has been identified as a critical factor limiting the long‐cycle stability of batteries. An effective solution is to build solid electrolyte interphase (SEI) that acts passivation layer mitigate side reactions electrolytes. mechanical SEI important because with poor cannot survive volume topography fluctuation anode upon cycling. stress built‐up would cause failure SEI, resulting exposure fresh surface electrolyte, consuming limited active materials electrolytes, inducing rapid battery decay. Therefore, understanding regulating imperative for improving cycle life. In this review, properties are discussed. Then, advanced characterization tools measure introduced. Additionally, recent progress on presented terms situ ex modifications SEI. Finally, an insightful outlook provided further understand regulate performance.

Language: Английский

Citations

6
A review on copper current collector used for lithium metal batteries: Challenges and strategies DOI

Junwei Qiu,

Ruling Qiu,

Zongyu Mao

et al.

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 100, P. 113683 - 113683

Published: Sept. 13, 2024

Language: Английский

Citations

4
Super SEI‐Forming Anion for Enhanced Interfacial Stability in Solid‐State Lithium Metal Batteries DOI Open Access
Ziyu Song,

Mengyu Tian,

Jing Zhu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(47)

Published: Oct. 9, 2024

Abstract The extremely high chemical reactivity of lithium metal (Li°) electrodes and its enormous volume change during repetitive cycles cause continuous interfacial degradations in prevailing organic electrolytes, thus deteriorating the cycling performances rechargeable batteries (LMBs). Herein, departing from traditional wisdom on design electrolyte components, a super SEI‐forming anion (SSA), as an efficient percussor for building stable interphases Li° electrode, is proposed. Comprehensive investigations related to unique chemistry SSA reveal that sulfonate polyfluoroalkyl functionalities synergistically contribute uniform spatial distributions designer species, greatly improving surface coverage property conformal ability resulting interphases. Consequently, incorporation leads significant improvements cyclability electrode (exceeding 575 mAh cm −2 before failure) corresponding Li°||LiFePO 4 cells [a five‐time increase lifespan compared benchmark cell with popular bis(fluorosulfonyl)imide (FSI)]. present work offers paradigm shift tame notorious issues via upgraded chemistry, which can promote practical development LMBs other kinds batteries.

Language: Английский

Citations

4
Gradient design for Si-based microspheres as ultra-stable Li-storage anode DOI
Yanpeng Wang,

Jinyue Song,

Hongguang Fan

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: unknown, P. 103939 - 103939

Published: Dec. 1, 2024

Language: Английский

Citations

4
Synergetic regulation of bulk reconstruction and preferential orientation realizing long-lifespan thin Li anodes for high-energy-density lithium metal batteries DOI
Xu Chu,

Feilong Dong,

Ying Jiang

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

0
Intelligent Strategy of Lithium Metal Reconstruction through Generation of a Protective Layer and Regulating Lithium Deposition DOI
Xiaoyi Wang, Cheng Liu, Shaojie Zhang

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Lithium metal has been considered as the most promising anode for next-generation batteries. However, its high reactivity with electrolyte and growth of lithium dendrites hamper application metal-based Herein, we demonstrate that polyphosphides (LixPPs) can be dissolved in diethyl carbonate (DEC) used a reconditioner generating protective layer regulating deposition Li anode. Since LixPPs are reduced prior to lithiation process, their product uniform tight at surface metal. The situ-formed protection superhigh ionic conductivity, thickness easily controlled by tuning amount LixPPs, thus facilitating interface stability. Li-Li symmetry batteries show stable cycling performance 2 mA cm-2 1 mAh over 5000 h. Interestingly, it exhibits self-healing function on scratched

Language: Английский

Citations

0