Facile synthesis of Co3−xMnxO4/C nanocages as an efficient sulfur host for lithium–sulfur batteries with enhanced rate performance

2020 ◽  
Vol 49 (25) ◽  
pp. 8591-8600 ◽  
Author(s):  
Zexian Zhang ◽  
Shiyuan Zhou ◽  
Tao Mei ◽  
Yanzhuo Gou ◽  
Fanxuan Xie ◽  
...  
Keyword(s):  
Commercial Application ◽  
Rate Performance ◽  
Facile Synthesis ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Capacity Reduction ◽  
Sulfur Host ◽  
Lithium Sulfur

Capacity reduction mainly caused by the shuttle effect and low conductivity restricts the commercial application of lithium–sulfur batteries (LSBs).

scholarly journals Co-W Bimetallic Carbides as Sulfur Host for High-Performance Lithium–Sulfur Batteries

2021 ◽  
Author(s):  
Dongke Zhang ◽  
Ting Huang ◽  
Pengfei Zhao ◽  
Ze Zhang ◽  
Xingtao Qi ◽  
...  
Keyword(s):  
High Performance ◽  
Conductive Network ◽  
Rate Performance ◽  
Cycle Stability ◽  
Sulfur Cathode ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur ◽  
Excellent Stability

Abstract Due to the low conductivity of sulfur and the dissolution of polysulfides, the research and application of lithium-sulfur (Li-S) batteries have encountered certain resistance. Increasing conductivity and introducing polarity into the sulfur host can effectively overcome these long-standing problems. Herein, We first prepared Co3W3C@ C@ CNTs / S material and used it in the cathode of lithium-sulfur batteries, The existence of carboxylated CNTs can form a conductive network, accelerate the transmission of electrons and improve the rate performance, and polar Co3W3C can form a strong interaction with polysulfide intermediates, effectively inhibiting its shuttle effect, improving the utilization of sulfur cathode electrodes, and improving the capacity and cycle stability. The Co3W3C@C@CNTs / S electrode material has a capacity of 1,093 mA h g-1 at a 0.1 A g− 1 and 482 mA h g-1 at 5 A g− 1. Even after 500 cycles of 2 A g− 1, the capacity of each cycle is only reduced by 0.08%. The excellent stability of this material can provide a new idea for the future development of lithium-sulfur batteries.

scholarly journals Sandwiching Sulfur into the Dents Between N, O Co-Doped Graphene Layered Blocks with Strong Physicochemical Confinements for Stable and High-Rate Li–S Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Mengjiao Shi ◽  
Su Zhang ◽  
Yuting Jiang ◽  
Zimu Jiang ◽  
Longhai Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
High Capacity ◽  
High Rate ◽  
Graphene Sheets ◽  
Rate Performance ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Doped Graphene ◽  
Sulfur Host ◽  
Co Doped

AbstractThe development of lithium–sulfur batteries (LSBs) is restricted by their poor cycle stability and rate performance due to the low conductivity of sulfur and severe shuttle effect. Herein, an N, O co-doped graphene layered block (NOGB) with many dents on the graphene sheets is designed as effective sulfur host for high-performance LSBs. The sulfur platelets are physically confined into the dents and closely contacted with the graphene scaffold, ensuring structural stability and high conductivity. The highly doped N and O atoms can prevent the shuttle effect of sulfur species by strong chemical adsorption. Moreover, the micropores on the graphene sheets enable fast Li+ transport through the blocks. As a result, the obtained NOGB/S composite with 76 wt% sulfur content shows a high capacity of 1413 mAh g−1 at 0.1 C, good rate performance of 433 mAh g−1 at 10 C, and remarkable stability with 526 mAh g−1 at after 1000 cycles at 1 C (average decay rate: 0.038% per cycle). Our design provides a comprehensive route for simultaneously improving the conductivity, ion transport kinetics, and preventing the shuttle effect in LSBs.

scholarly journals Three-Dimensionally Ordered Macroporous ZnO Framework as Dual-Functional Sulfur Host for High-Efficiency Lithium–Sulfur Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2267
Author(s):  
Haisheng Han ◽  
Tong Wang ◽  
Yongguang Zhang ◽  
Arailym Nurpeissova ◽  
Zhumabay Bakenov
Keyword(s):  
High Efficiency ◽  
High Capacity ◽  
Active Surface ◽  
Active Surface Area ◽  
Shuttle Effect ◽  
Dual Functional ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Ordered Macroporous ◽  
Lithium Sulfur

A three-dimensionally ordered macroporous ZnO (3DOM ZnO) framework was synthesized by a template method to serve as a sulfur host for lithium–sulfur batteries. The unique 3DOM structure along with an increased active surface area promotes faster and better electrolyte penetration accelerating ion/mass transfer. Moreover, ZnO as a polar metal oxide has a strong adsorption capacity for polysulfides, which makes the 3DOM ZnO framework an ideal immobilization agent and catalyst to inhibit the polysulfides shuttle effect and promote the redox reactions kinetics. As a result of the stated advantages, the S/3DOM ZnO composite delivered a high initial capacity of 1110 mAh g−1 and maintained a capacity of 991 mAh g−1 after 100 cycles at 0.2 C as a cathode in a lithium–sulfur battery. Even at a high C-rate of 3 C, the S/3DOM ZnO composite still provided a high capacity of 651 mAh g−1, as well as a high areal capacity (4.47 mAh cm−2) under high loading (5 mg cm−2).

scholarly journals Facile synthesis of mesoporous graphene platelets with in situ nitrogen and sulfur doping for lithium–sulfur batteries

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22567-22577 ◽  
Author(s):  
Xiqing Yuan ◽  
Bingchuan Liu ◽  
Huijie Hou ◽  
Kemal Zeinu ◽  
Yuhang He ◽  
...  
Keyword(s):  
Facile Synthesis ◽  
Shuttle Effect ◽  
Sulfur Doping ◽  
Lithium Sulfur Batteries ◽  
Graphene Platelets ◽  
Lithium Sulfur

The interaction between lithium polysulfides and doped heteroatoms could prevent the loss of soluble polysulfides in the cathode and mitigate the shuttle effect in lithium–sulfur batteries.

A Well-Designed Polymer as a Three-in-One Multifunctional Binder for High-Performance Lithium-Sulfur Battery

2020 ◽  
Author(s):  
Jia-Jia Yuan ◽  
Qingran Kong ◽  
Zheng Huang ◽  
You-Zhi Song ◽  
Mingyang Li ◽  
...  
Keyword(s):  
High Performance ◽  
Cycle Life ◽  
Commercial Application ◽  
Lithium Sulfur Battery ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Cathode Structure ◽  
Sulfur Battery ◽  
Lithium Sulfur ◽  
Capacity Decay

The commercial application of lithium-sulfur batteries is mainly restricted by quick capacity decay and poor cycle life due to the shuttle effect, insulate nature of sulfur, and cathode structure pulverization....

A yolk–shell Fe3O4@void@carbon nanochain as shuttle effect suppressive and volume-change accommodating sulfur host for long-life lithium–sulfur batteries

Nanoscale ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 7744-7750
Author(s):  
Ting Zhou ◽  
Zihan Shen ◽  
Yong Wu ◽  
Tianli Han ◽  
Mengfei Zhu ◽  
...  
Keyword(s):  
Volume Change ◽  
Carbon Shell ◽  
Shuttle Effect ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Long Life ◽  
Lithium Sulfur

A yolk–shell Fe3O4@S@C nanochain in which sulfur is encapsulated between the Fe3O4 core and the carbon shell is developed for Li–S batteries.

MgCo layered double hydroxide-based yolk shell polyhedrons as multifunctional sulfur mediator for lithium-sulfur batteries

2021 ◽  
Author(s):  
Kai Zhang ◽  
You Li ◽  
Hongyu Wang ◽  
Zisheng Zhang ◽  
Guihua Liu ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
High Discharge ◽  
Shuttle Effect ◽  
High Discharge Capacity ◽  
Host Materials ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Double Hydroxide ◽  
Areal Capacity ◽  
Lithium Sulfur

Abstract The development of efficient sulfur host materials to address the shuttle effect issues of lithium polysulfides (LiPSs) is crucial in the lithium-sulfur (Li-S) batteries, but still challenging. In the present study, a novel yolk shell structured MgCo-LDH/ZIF-67 composite is designed as Li-S battery cathode. In this composite, the shell layer is MgCo layered double hydroxide constructed by partially etching ZIF-67 nanoparticle by Mg2+, and the core is the unreacted ZIF-67 particle. The unique yolk shell structure not only provides abundant pores for sulfur accommodation, but also facilitates the electrolyte penetration and ion transport. The ZIF-67 core exhibits strong polar adsorption to LiPSs through the Lewis acid-base interactions, and the micropores/mesoporous can further trap LiPSs. Meanwhile, the MgCo-LDH shell exposes enough sulfur-philic sites for enhancing chemisorption and catalyzes the LiPSs conversion. As a result, when MgCo-LDH/ZIF-67 is used as sulfur host in the cathode, the cell achieves a high discharge capacity of 1121 mAh g-1 at 0.2 C, and an areal capacity of 5.0 mAh cm-2 under the high sulfur loading of 5.8 mg cm-2. The S/MgCo-LDH/ZIF-67 electrode holds a promising potential for the development of Li-S batteries.

Facile Synthesis of Crumpled Nitrogen-Doped MXene Nanosheets as a New Sulfur Host for Lithium-Sulfur Batteries

2018 ◽  
Vol 8 (13) ◽  
pp. 1702485 ◽  
Author(s):  
Weizhai Bao ◽  
Lin Liu ◽  
Chengyin Wang ◽  
Sinho Choi ◽  
Dan Wang ◽  
...  
Keyword(s):  
Facile Synthesis ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Sulfur Host ◽  
Lithium Sulfur
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