Green synthesis of a Se/HPCF–rGO composite for Li–Se batteries with excellent long-term cycling performance

Ling, Zeng; Chen, Xi; Liu, Renpin; Lin, Liangxu; Zheng, Cheng; Xu, Lihong; Luo, Fenqiang; Qian, Qingrong; Chen, Qinghua; Wei, Mingdeng

doi:10.1039/c7ta06884k

Cited by 60 publications

(22 citation statements)

References 76 publications

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“…It indicates that both discharge and charge processes exhibit stable voltage plateaus at around 2.0 V. Compared with Se/rGO and Se/MnO 2 electrodes ( Supplementary Fig. 18), Se@Co SA -HC cathodes exhibit superior rate electrochemical performances mainly due to the enhanced conductive network, which was previously reported using rGO-based electrodes for Li-Se batteries 50 . Supplementary Figure 19 exhibits the rate capability of an unselenated Co SA -HC electrode at different current densities from 0.1 to 5 C. It exhibits a much lower specific capacity of 43 mA h g −1 at 0.1 C. This indicates that the capacity contribution from the Co SA -HC matrix alone in the Se@Co SA -HC composite is negligible.…”

Section: Resultssupporting

confidence: 60%

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

et al. 2020

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Selenium cathodes have attracted considerable attention due to high electronic conductivity and volumetric capacity comparable to sulphur cathodes. However, practical development of lithium-selenium batteries has been hindered by the low selenium reaction activity with lithium, high volume changes and rapid capacity fading caused by the shuttle effect of polyselenides. Recently, single atom catalysts have attracted extensive interests in electrochemical energy conversion and storage because of unique electronic and structural properties, maximum atom-utilization efficiency, and outstanding catalytic performances. In this work, we developed a facile route to synthesize cobalt single atoms/nitrogen-doped hollow porous carbon (CoSA-HC). The cobalt single atoms can activate selenium reactivity and immobilize selenium and polyselenides. The as-prepared selenium-carbon (Se@CoSA-HC) cathodes deliver a high discharge capacity, a superior rate capability, and excellent cycling stability with a Coulombic efficiency of ~100%. This work could open an avenue for achieving long cycle life and high-power lithium-selenium batteries.

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Section: Resultssupporting

confidence: 60%

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

et al. 2020

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“…In the last few decades, by virtue of their high security, capability of storing clean energy, and providing a stable power supply, commercialized lithium‐ion batteries (LIBs) have come to dominate the energy storage market from portable electronic devices to electrical vehicles . However, limited Li sources and exorbitant prices have hampered their sustainable development . Therefore, sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs), with analogical energy storage behavior to LIBs, have sparked significant attention and are considered as promising alternatives to LIBs, ascribed to their competitive cost, appropriate redox potential, along with inexhaustible sodium/potassium reserves, which can be more able to meet the urgent demands of large‐scale energy storage markets .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6] However,l imited Li sources ande xorbitant pricesh ave hamperedt heir sustainable development. [7][8][9][10][11][12] Therefore,s odium-ion batteries (SIBs) and potassium-ionb atteries (PIBs), with analogical energy storage behavior to LIBs, have sparked significant attentiona nd are considered as promising alternatives to LIBs, ascribed to their competitive cost, appropriate redox potential, along with inexhaustible sodium/potassium reserves, which can be more able to meet the urgentd emands of large-scale energy storage markets. [13][14][15][16][17][18][19][20][21] However,t he radius of Na + /K + is largert han that of Li + ,w hich mighta ccountf or high diffusion barriers and severe volumevariations, leadingt oc yclic instability and inferior rate capability.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Ling

Kang

Luo

et al. 2019

Chemistry A European J

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Sodium/potassium‐ion batteries (SIBs/PIBs) arouse intensive interest on account of the natural abundance of sodium/potassium resources, the competitive cost and appropriate redox potential. Nevertheless, the huge challenge for SIBs/PIBs lies in the scarcity of an anode material with high capacity and stable structure, which are capable of accommodating large‐size ions during cycling. Furthermore, using sustainable natural biomass to fabricate electrodes for energy storage applications is a hot topic. Herein, an ultra‐small few‐layer nanostructured MoSe2 embedded on N, P co‐doped bio‐carbon is reported, which is synthesized by using chlorella as the adsorbent and precursor. As a consequence, the MoSe2/NP‐C‐2 composite represents exceedingly impressive electrochemical performance for both sodium‐ion batteries (SIBs) and potassium‐ion batteries (PIBs). It displays a promising reversible capacity (523 mAh g−1 at 100 mA g−1 after 100 cycles) and impressive long‐term cycling performance (192 mAh g−1 at 5 A g−1 even after 1000 cycles) in SIBs, which are some of the best properties of MoSe2‐based anode materials for SIBs to date. To further probe the great potential applications, full SIBs pairing the MoSe2/NP‐C‐2 composite anode with a Na3V2(PO4)3 cathode also exhibits a satisfactory capacity of 215 mAh g−1 at 500 mA g−1 after 100 cycles. Moreover, it also delivers a decent reversible capacity of 131 mAh g−1 at 1 A g−1 even after 250 cycles for PIBs.

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“…[ 8 ] The porous carbon matrix not only has physical adsorption to polyselenide, but also provides suitable porosity and large specific surface area to buffer volume change. [ 9,10 ] So far, numerous carbon materials have been applied to achieve impressive electrochemical performance, including porous carbon, [ 11–13 ] carbon spheres, [ 14,15 ] graphene, [ 16–18 ] carbon nanotube/nanocage, [ 19,20 ] and so on.…”

Section: Introductionmentioning

confidence: 99%

Porous Bamboo‐Derived Carbon as Selenium Host for Advanced Lithium/Sodium–Selenium Batteries

Wang

Zhao

et al. 2020

Energy Tech

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Selenium (Se) has received extensive attention as the most competitive cathode material for next generation high‐energy batteries. However, the shuttle effect of polyselenide and volume change lead to inferior electrochemical properties. To solve these issues, a porous bamboo‐derived carbon (PBC) with abundant meso/micropores is prepared as a framework to effectively encapsulate elemental selenium. For Li–Se batteries, Se/PBC electrode delivers an outstanding capacity of 509 mAh g−1 after 200 cycles at 0.2 C (1 C = 675 mA g−1) with a low capacity fade of 0.036% per cycle. The Se/PBC composite also reveals a satisfied electrochemical performance for Na–Se batteries with an excellent capacity of 409 mAh g−1 after 200 cycles at 0.2 C. Moreover, Se/PBC electrode also presents excellent long‐term cycle performance and rate performance at 15 C for Li–Se batteries and 10 C for Na–Se batteries. The outstanding properties are attributed to the specific 3D structure and high conductivity of PBC, which significantly inhibits the shuttle effect and enhances the reaction kinetics. Herein, not only the great application potential of bamboo in energy storage systems is demonstrated, but also an effective approach and low‐cost strategy for improving the performance of lithium/sodium–selenium batteries is offered.

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Green synthesis of a Se/HPCF–rGO composite for Li–Se batteries with excellent long-term cycling performance

Abstract: A Se/HPCF–rGO composite was synthesized as a highly stable cathode material for Li–Se batteries.

Cited by 60 publications

References 76 publications

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Porous Bamboo‐Derived Carbon as Selenium Host for Advanced Lithium/Sodium–Selenium Batteries

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Green synthesis of a Se/HPCF–rGO composite for Li–Se batteries with excellent long-term cycling performance

Abstract: A Se/HPCF–rGO composite was synthesized as a highly stable cathode material for Li–Se batteries.

Cited by 60 publications

References 76 publications

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

High-power lithium–selenium batteries enabled by atomic cobalt electrocatalyst in hollow carbon cathode

Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe2 Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries

Porous Bamboo‐Derived Carbon as Selenium Host for Advanced Lithium/Sodium–Selenium Batteries

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Facile Synthesis of Ultra‐Small Few‐Layer Nanostructured MoSe₂ Embedded on N, P Co‐Doped Bio‐Carbon for High‐Performance Half/Full Sodium‐Ion and Potassium‐Ion Batteries