Edge sulfurized graphene nanoplatelets via vacuum mechano-chemical reaction for lithium–sulfur batteries

Yan, Longlong; Xiao, Min; Wang, Shuanjin; Han, Dongmei; Ye, Meng

doi:10.1016/j.jechem.2016.12.001

Cited by 31 publications

(16 citation statements)

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“…[9][10][11][12] Therefore, a composite cathode with sulfur in a suitable conductive agent to handle these issues has presented quite a compelling scientific and engineering focus. [13][14][15] More than 30 years ago, Rauh and Peled firstly introduced the idea of loading sulfur into the porous structure of carbon materials.…”

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confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

251

170

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Due to the high theoretical energy density of 2600 Wh kg −1 , lithium-sulfur batteries are strongly regarded as the promising nextgeneration energy storage devices. However, the practical applications of lithium-sulfur batteries are challenged by several obstacles, including the low sulfur utilization and poor lifespan, which are partly attributed to the shuttle of lithium polysulfides and lithium dendrite growth in working lithium-sulfur batteries. Suppressing lithium dendrite growth is a necessary step not only for a safe and efficient Li metal anode, but also for a high capacity cell with a high Coulombic efficiency. Herein we review the lithium metal anode protection in a polysulfide-rich environment, relative to most reviews on lithium metal anode without considering the effect of lithium polysulfides in lithium metal batteries. Firstly, the importance and dilemma of Li metal anode issues in lithium-sulfur batteries are underscored, aiming to arouse the attentions to Li metal anode protection. Specific attentions are paid to the surface chemistry of Li metal anode in a polysulfide-rich lithium-sulfur battery. Next, the proposed strategies to stabilize solid electrolyte interface and protect Li metal anode are included. Finally, a general conclusion and a perspective on the current limitations, as well as recommended future research directions of Li metal anode in lithium-sulfur batteries are presented. The ever-increasing requirement for efficient and economic energy storage technologies has triggered the continued research into advanced battery systems.1 Lithium ion batteries, based on the lithium intercalation chemistry, have dominated the battery market since their commercial application in the 1990s.2 However, conventional lithium ion batteries are very expensive and their energy densities (theoretically, 350 − 500 Wh kg −1 , practically, 100 − 250 Wh kg −1 ) seem insufficient for long-range electrical vehicles and high-end portable electronics. These emerging demands have energized the evolution of other alternative rechargeable batteries with higher energy density and longer lifespan.3 Lithium−sulfur (Li−S) battery, a 'beyond Li-ion' technology, has drawn extensive attentions due to its high specific capacity (1675 mAh g −1 ) and energy density (2600 Wh kg −1 ). 4-6The greater energy storage ability of Li−S batteries is realized through the phase-transformation electrochemistry based on elemental sulfur cathode and metallic lithium anode [S 8 + 16Li ↔ 8Li 2 S], 7,8 which is fundamentally different from current transition metal-based cathodes and graphite-based anodes in Li-ion batteries.The conversion chemistry in a Li−S cell offers not only significant advantages as mentioned above, but also some critical challenges, such as the low conductivity of sulfur and lithium sulfide, the huge volumetric change from sulfur (71 mol L −1 ) to lithium sulfide (36 mol L −1 ), and the shuttle of long-chain polysulfide intermediates during discharge/charge cycling.9-12 Therefore, a composite cathode with sulfur in ...

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confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

251

170

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“…In this respect, tailoring the cathode materials with high utilization of sulfur and long life span can obviate the shuttling effect of the polysulfides between cathode and anode, and that improves the efficiency of the Li-S batteries. Several attempts have been performed to improve the performance of Li-S batteries [56,[58][59][60][61][62][63][64][65][66][67][68][69][70][71] . Various high performance Li-S batteries such as TiO 2 /S//Li [62] , FeS 2 //Li [63] , Ti 6 O 11 /S//Li [62] , Ti 4 O 7 /S//Li [62] , Ti 4 O 7 /S//Li [64] , δ-MnO 2 /S//Li [65] , and Co 9 S 8 /S//Li [66] have been developed.…”

Section: Cathodementioning

confidence: 99%

Recent advances on flexible electrodes for Na-ion batteries and Li–S batteries

Jamesh

2019

Journal of Energy Chemistry

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“…Compared with typical LIBs based on intercalation materials, flexible Li-S batteries hold much higher energy density of up to 2567 Wh kg −1 [131,132] . However, the low conductivity of sulfur and its discharge products as well as the dissolution of polysulfide into electrolyte seriously impede the development of flexible Li-S batteries.…”

Section: Flexible Film-based Lithium-sulfur Batteriesmentioning

confidence: 99%