Layered manganese phosphorus trisulfides for high‐performance lithium‐ion batteries and the storage mechanism

Abstract

Although advanced anode materials for the lithium-ion battery have been investigated for decades, a reliable, high-capacity, and durable material that can enable a fast charge remains elusive. Herein, we report that a metal phosphorous trichalcogenide of MnPS 3 (manganese phosphorus trisulfide), endowed with a unique and layered van der Waals structure, is highly beneficial for the fast insertion/extraction of alkali metal ions and can facilitate changes in the buffer volume during cycles with robust structural stability. The few-layered MnPS 3 anodes displayed the desirable specific capacity and excellent rate chargeability owing to their good electronic and ionic conductivities. When assembled as a half-cell lithiumion battery, a high reversible capacity of 380 mA h g −1 was maintained by the MnPS 3 after 3000 cycles at a high current density of 4 A g −1 , with a capacity retention of close to or above 100%. In full-cell testing, a reversible capacity of 450 mA h g −1 after 200 cycles was maintained as well. The results of in-situ TEM revealed that MnPS 3 nanoflakes maintained a high structural integrity without exhibiting any pulverization after undergoing Carbon Energy.

Metal Phosphorous Chalcogenide: A Promising Material for Advanced Energy Storage Systems

“…They possess a theoretical specific capacity of up to 1300 mA h g −1 , surpassing other metal oxides and sulfides. [46] In comparison to other materials, MPX 3 displays the ability to firmly integrate with lithium without inducing surface deformation, showcasing enhanced stabil- [70] Copyright 2022, WILEY-VCH. e) Schematic diagram of synthesis process for NiCoPS 3 /NC hollow nanocubes.…”

“…According to recent studies, MnPS 3 is one of the most outstanding lithium storage negative electrode materials among various feasible synthesized first‐row MPX 3 nanosheets. [ 70 ] The favorable electronic and ionic conductivity of MnPS 3 nanosheets contributes to ideal specific capacity, robust cycle performance, and outstanding rate charging capability. In the full‐cell testing with MnPS 3 as the anode and LiCoO 2 as the cathode at a current density of 0.2 A g −1 , the reversible capacity remained at 450 mA h g −1 after 200 cycles.…”

“…Reproduced with permission. [ 70 ] Copyright 2022, WILEY‐VCH. e) Schematic diagram of synthesis process for NiCoPS 3 /NC hollow nanocubes.…”

“…Figure 4. a-d) In situ TEM images of MnPS 3 monolayer volume change in cycles. Reproduced with permission [70]. Copyright 2022, WILEY-VCH.…”

Electrode Materials of Cobaltous Fluoride for Supercapacitor and Electrocatalysis Applications

“…With climate change, consumption of fossil fuels and aggravation of environmental pollution, mankind is paying more and more attention to the development and utilization of renewable clean energy and technologies related to energy storage and conversion, which will play an important role in "carbon neutrality". [1][2][3] Therefore, electrochemical devices such as lithium-ion batteries, [4][5][6][7] lithium-sulfur batteries, [8][9] supercapacitor (SC), [10] and water splitting [11][12] have attracted a great deal of study by domestic and foreign researchers. With fast charge and discharge capability, exceptional power density, longcycling lifespan and high safety, SC is regarded as one of the most hopeful candidates in various new energy storage devices.…”