Green lithium: photoelectrochemical extraction

PhotoniX, Journal Year: 2023, Volume and Issue: 4(1)

Published: July 10, 2023

Abstract Lithium (Li) is an essential element in modern energy production and storage devices. Technology to extract Li from seawater, which contains ~ 230 billion tons of Li, offers a solution the widespread concern regarding quantitative geographical limitations future supplies. To obtain green we propose unassisted photoelectrochemical (PEC) extraction system based on III-V-based triple-junction (3J) photoelectrode Li-ion selective membrane with only sunlight as input. A light-harvesting/catalysis decoupling scheme yielded 3J excellent light-harvesting catalysis reaction capabilities superb stability over 840 h process. It allows successfully enrich seawater by 4,350 times ( i.e ., 0.18 ppm 783.56 ppm) after three stages. The overall PEC achieved 2.08 mg kJ −1 solar-to-Li efficiency 3.65% solar-to-hydrogen efficiency. Graphical Photoelectrochemical lithium device designed explore for first time. cell (InGaP/GaAs/Ge) constructed, offering suitable operating potential membrane-based process seawater. can (from ppm).

Language: Английский

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Rational Molecular Engineering via Electron Reconfiguration toward Robust Dual-Electrode/Electrolyte Interphases for High-Performance Lithium Metal Batteries

ACS Nano, Journal Year: 2024, Volume and Issue: 18(22), P. 14764 - 14778

Published: May 22, 2024

High-energy-density lithium-metal batteries (LMBs) coupling anodes and high-voltage cathodes are hindered by unstable electrode/electrolyte interphases (EEIs), which calls for the rational design of efficient additives. Herein, we analyze effect electron structure on coordination ability energy levels additive, from aspects intramolecular cloud density delocalization, to reveal its mechanism solvation structure, redox stability, as-formed EEI chemistry, electrochemical performances. Furthermore, propose an reconfiguration strategy molecular engineering additives, taking sorbide nitrate (SN) additive as example. The lone pair electron-rich group enables strong interaction with Li ion regulate delocalization yields further positive synergistic effects. electron-withdrawing moiety decreases ether-based backbone, improving overall oxidation stability cathode compatibility, anchoring it a reliable cathode/electrolyte interface (CEI) framework integrity. In turn, electron-donating bicyclic-ring-ether backbone breaks inherent resonance nitrate, facilitating reducibility form N-contained inorganic Li2O-rich solid electrolyte (SEI) uniform deposition. Optimized physicochemical properties interfacial biaffinity enable significantly improved performance. High rate (10 C), low temperature (-25 °C), long-term (2700 h) achieved, 4.5 Ah level Li||NCM811 multilayer pouch cell under harsh conditions is realized high (462 W h/kg). proof concept this work highlights that ingenious based regulation represents energetic modulate interphase providing realistic reference innovations practical LMBs.

Language: Английский

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Interfacial Layers with Desolvation Function Induced Stable Deposition of Lithium Metal for Long-Cycling Lithium Metal Batteries

Nano Letters, Journal Year: 2024, Volume and Issue: 24(26), P. 8055 - 8062

Published: June 21, 2024

The unstable solid electrolyte interface (SEI) formed by uncontrollable degradation, which leads to dendrite growth and Coulombic efficiency decay, hinders the development of Li metal anodes. A controllable desolvation process is essential for formation stable SEI improved lithium deposition behavior. Here, we show a functional artificial protective layer comprised chondroitin sulfate-reduced graphene oxide (CrG), on polar groups are distributed effectively reduce energy barrier

Language: Английский

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Lithiophilic Interface Layer Induced Uniform Deposition for Dendrite-free Lithium Metal Anodes in a 3D Polyethersulfone Frame

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(17), P. 20865 - 20875

Published: April 21, 2023

Lithium metal anodes possess ultrahigh theoretical specific capacity for next-generation lithium batteries, but the infinite volume expansion and growth of dendrites remain a huge obstacle to their commercialization. Therefore, here, we construct CuO-loaded 3D polyethersulfone (PES) nanofiber frame onto lithiophilic Cu2O/Cu substrate promote storage performance composite anode, can effectively alleviate (Li) anodes. Meanwhile, reacts with CuO in Cu2O generate Li2O, which strengthen solid electrolyte interface (SEI) layer achieve uniform deposition lithium. In addition, combination heat treatment method electrospinning technology solves problem poor adhesion between fiber film substrate. As result, PES/CuO-Cu2O (PCC) current collector still maintains smooth flat lithium-depositing at 5 mA cm-2. The PCC-assembled Li||Cu half-cell operate stably 320 cycles 0.5 cm-2, is about 4 times that bare Cu. Furthermore, symmetrical batteries PCC@Li maintain excellent cycle stability 1770 h. Accordingly, this work provides low-cost highly effective strategy stabilizing anode.

Language: Английский

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A polythiourea protective layer for stable lithium metal anodes

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(19), P. 10155 - 10163

Published: Jan. 1, 2023

A stable polythiourea-based organic–inorganic composite film was constructed to form Li 3 N, 2 S, and LiF in situ at the LMA, endowing excellent stability Ni-rich Li‖LiNi 0.88 Co 0.09 Mn 0.03 O (NCM88) cells.

Language: Английский

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