Research Article
Microstructures of Reduced Graphene Oxide/Sulfur Nanocomposites and Their Impacts on Lithium Storage Performances
Table 1
Comparison of a set of reported studies on graphene/sulfur and graphene oxide/sulfur composites with their corresponding electrochemical performances.
| Composite | S content in G/S powder (wt) | Electrolyte | 1st discharge capacity (mAh g−1) | Capacity at the th cycle (mAh g−1) | Source |
| TG – a-S ball milling | 73 wt% 82 wt% | 1 M LiTFSI/DOL/DME | 1503@0.1 C 835@1 C | 615@100th 530@100th | [14] |
| rGO + a-S melting infiltration | 22 wt% | 1 M LiPF6/EC/DMC | 1598@0.16 A g−1 |
670@80th | [15] |
| TG + c-S melting infiltrating | 20 wt% 40 wt% 60 wt% 80 wt% | 1 M LiTFSI/DOL/DME | 962@0.28 A g−1 1021@0.28 A g−1 1210@0.28 A g−1 854@0.28 A g−1 | 602@70th 728@70th 880@70th 449@70th | [16] |
| TG + a-S melting infiltration | 67 wt% | N/A | 1290@0.025 A g−1 | 421@100th | [17] |
| rGO + S melting infiltration | 66.7 wt% | 1 M LiTFSI/DOL/DME | 1093@0.2 C | 435@60th | [18] |
| TG + a-S rGO coated | 63 wt% | N/A | 1588@0.025 A g−1 | 928@100th | [17] |
| mGO + S + PEG GO/CB wrapped | 70 wt% (34–46%) | 1 M LiTFSI/DOL/DME | 960@0.2 C | 520@100th | [19] |
| pGNS + a-S melting infiltration | 22 wt% | 1 M LiTFSI/PEGDME | 1611@0.05 A g−1 | 539@40th | [20] |
| pGNS + S melting infiltration | 66.7 wt% | 1 M LiTFSI/DOL/DME | 1379@0.2 C | 1007@60th | [18] |
| rGO + c-S oxidation | 87 wt% | 1 M LiTFSI/DOL/ TEGDME | 705@0.33 A g−1 | 492@50th | [21] |
| rGO + c-S Na2S + NaSO3 | 75.2 wt% | 1 M LiCF3SO3 + 0.2 wt% LiNO3/ DME/DOL | 1300@0.2 A g−1 | 930@50th | [22] |
| rGO + S Na2SO3 + Na2S + rGO | 63.6 wt% 50.9% | 1 M LiTFSI/DOL/DME | 1267@0.314 A g−1 | 804@80th | [23] |
| p graphene + c-S Na2S2O3 + H2SO4 | 83.3 wt% 66.6% | 1 M LiTFSI + 0.1 M LiNO3/ EGDME/DOXL | 1237@0.1 C | 810@50th | [24] |
| TG + c-S S dissolve in CS2 | 71.8 wt% | 1 M LiTFSI/DOL/DME | 923@0.1 C | 490@50th | [25] |
| rGO + S chemical microemulsion | 66 wt% | 1 M LiTFSI/PYR14TFSI/ PEGDME | 1320@0.168 A g−1 | 735@50th | [26] |
| Nafion coated TG + c-S S dissolve in CS2 | 71.8 wt% | 1 M LiTFSI/DOL/DME | 923@0.1 C | 750@50th | [25] |
| rGO + S wrapped, S in CS2 | 65 wt% (52%) | 1 M LiTFSI/DOL/DME | 725@1 C | 622@60th | [27] |
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rGO: reduced graphene oxide; TG: thermally exfoliated graphene; pGNS: porous (activated) graphene nanosheets. a-S: amorphous sulfur; c-S: crystalline sulfur. In most literatures, the electrode for electrochemical characterizations contains 80 wt% GO/S, 10 wt% carbon additive, and 10 wt% binder.
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