Amorphization improving the initial capacity decay of MnO2 anode material for LIBs

2021 ◽  
pp. 139200
Author(s):  
Xiaole Zhang ◽  
Song Li ◽  
Shenghe Wang ◽  
Shichao Du ◽  
Zhongsheng Wen ◽  
...  
Keyword(s):  
Anode Material ◽  
Initial Capacity ◽  
Capacity Decay

Controlling the Voltage Window for Improved Cycling Performance of SnO2 as Anode Material for Lithium-Ion Batteries

2020 ◽  
Vol 20 (11) ◽  
pp. 7051-7056
Author(s):  
Jungwon Heo ◽  
Anupriya K. Haridas ◽  
Xueying Li ◽  
Rakesh Saroha ◽  
Younki Lee ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Oxide Materials ◽  
Capacity Fading ◽  
Lithium Ions ◽  
Volume Variation ◽  
Capacity Decay

Transition metal oxide materials with high theoretical capacities have been studied as substitutes for commercial graphite in lithiumion batteries. Among these, SnO2 is a promising alloying reaction-based anode material. However, the problem of rapid capacity fading in SnO2 due to volume variation during the alloying/dealloying processes must be solved. The lithiation of SnO2 results in the formation of a Li2O matrix. Herein, the volume variation of SnO2 was suppressed by controlling the voltage window to 1 V to prevent the delithiation reaction between Li2O and Sn. Using this strategy the unreacted Li2O matrix was enriched with metallic Sn particles, thereby providing a pathway for lithium ions. The specific capacity decay in the voltage window of 0.05–3 V was 1.8% per cycle. However, the specific capacity decay was improved to 0.04% per cycle after the voltage window was restricted (in the range of 0.05–1 V). This strategy resulted in a specific capacity of 374.7 mAh g−1 at 0.1 C after 40 cycles for the SnO2 anode.

Highly-dispersed Ge quantum dots in carbon frameworks for ultralong-life sodium ions batteries

2021 ◽  
Author(s):  
Wei Wei ◽  
Yongya Zhang ◽  
Lei Liang ◽  
Kefeng Wang ◽  
Qingfeng Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Anode Material ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Sodium Ions ◽  
Highly Dispersed ◽  
High Theoretical Capacity ◽  
Ge Quantum Dots ◽  
Capacity Decay

Metal germanium (Ge) with a high theoretical capacity of 590 mA h g-1 is regarded as a promising anode material for sodium ion batteries, but it suffers fast capacity decay...

scholarly journals Transformation of SnS Nanocompisites to Sn and S Nanoparticles during Lithiation

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 145
Author(s):  
Haokun Deng ◽  
Thapanee Sarakonsri ◽  
Tao Huang ◽  
Aishui Yu ◽  
Katerina Aifantis
Keyword(s):  
Interface Layer ◽  
Free Standing ◽  
Artificial Graphite ◽  
Transmission Electron ◽  
Carbon Substrates ◽  
Electrochemical Cycling ◽  
Insight Into ◽  
Initial Capacity ◽  
Capacity Decay

SnS nanomaterials have a high initial capacity of 1000 mAh g−1; however, this cannot be retained throughout electrochemical cycling. The present study provides insight into this capacity decay by examining the effect that Li intercalation has on SnS “nanoflowers” attached on carbon substrates’ such as artificial graphite. Scanning and transmission electron microscopy reveal that lithiation of such materials disrupts their initial morphology and produces free-standing Sn and SnS nanoparticles that dissolve in the electrolyte and disperse uniformly over the entire electrode surface. As a result, the SnS is rendered inactive after initial cycling and contributes to the formation of the solid electrolyte interface layer, resulting in continuous capacity decay during long term cycling. This is the first study that illustrates the morphological effects that the conversion mechanism has on SnS anodes. In order to fully utilize SnS materials, it is necessary to isolate them from the electrolyte by fully encapsulating them in a matrix.

Facile synthesis of Sb/CNT nanocomposite as anode material for sodium-ion batteries

2018 ◽  
Vol 11 (05) ◽  
pp. 1850004 ◽  
Author(s):  
Zhendong Zhang ◽  
Jiachang Zhao ◽  
Hongxia Wang ◽  
Yanmei Gong ◽  
Jing Li Xu
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Performance ◽  
Anode Material ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Rate Performance ◽  
Facile Synthesis ◽  
Capacity Retention ◽  
Initial Capacity

Sb/carbon nanotubes (CNT) nanocomposite was synthesized by a facile chemical refluxing method. Investigation of the electrochemical performance of the composite which was used as an anode material in sodium-ion batteries shows that the Sb/CNT nanocomposite possessed an initial capacity of 628.6[Formula: see text]mAh g[Formula: see text]. The nanocomposite exhibited excellent rate performance with 90.8% capacity retention after 50 cycles, which is superior to that of Sb nanoparticles that were made under the same condition.

SnO2/Reduced Graphene Oxide Nanocomposite as Anode Material for Lithium-Ion Batteries with Enhanced Cyclability

2016 ◽  
Vol 16 (4) ◽  
pp. 4136-4140 ◽  
Author(s):  
Wenjuan Jiang ◽  
Xike Zhao ◽  
Zengsheng Ma ◽  
Jianguo Lin ◽  
Chunsheng Lu
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Anode Material ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Capacity Retention ◽  
Reduced Graphene ◽  
Initial Capacity

SnO2 is considered as one of the most promising anode materials for next generation lithium-ion batteries, however, how to build energetic SnO2-based electrode architectures has still remained a big challenge. In this article, we developed a facile method to prepare SnO2/reduced graphene oxide (RGO) nanocomposite for an anode material of lithium-ion batteries. It is shown that, at the current density of 0.25 A·g−1, SnO2/RGO has a high initial capacity of 1705 mAh·g−1 and a capacity retention of 500 mAh·g−1 after 50 cycles. The total specific capacity of SnO2/RGO is higher than the sum of their pure counterparts, indicating a positive synergistic effect on the electrochemical performance.

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

2021 ◽  
Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

Synthesis and Electrochemical Performance of SnO2/Graphene Anode Material for Lithium Ion Batteries

2013 ◽  
Vol 28 (5) ◽  
pp. 515-520 ◽  
Author(s):  
Zhen-Jun YU ◽  
Yan-Li WANG ◽  
Hong-Gui DENG ◽  
Liang ZHAN ◽  
Guang-Zhi YANG ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion

A novel design strategy of a practical carbon anode material from a single lignin-based surfactant source for sodium-ion batteries

2020 ◽  
Vol 56 (45) ◽  
pp. 6078-6081 ◽  
Author(s):  
Changhao Li ◽  
Yi Sun ◽  
Qiujie Wu ◽  
Xin Liang ◽  
Chunhua Chen ◽  
...  
Keyword(s):  
Anode Material ◽  
Design Strategy ◽  
Sodium Ion ◽  
Carbon Anode ◽  
Sodium Ion Batteries ◽  
Lignin Sulfonate ◽  
Novel Design

A schematic illustration showing the preparation of HCM from a single sodium lignin sulfonate source and the process of Na storage.

Superflexible C68-graphyne as a promising anode material for lithium-ion batteries

2019 ◽  
Vol 7 (29) ◽  
pp. 17357-17365 ◽  
Author(s):  
Bozhao Wu ◽  
Xiangzheng Jia ◽  
Yanlei Wang ◽  
Jinxi Hu ◽  
Enlai Gao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Carrier Mobility ◽  
High Stability ◽  
High Capacity ◽  
Lithium Ion

A new graphyne with high stability, excellent flexibility and carrier mobility is theoretically predicted as a promising anode material for lithium-ion batteries with high capacity.

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