| Title | Nanoscale Borate Coating Network Stabilized Iron Oxide Anode for High-Energy-Density Bipolar Lithium-Ion Batteries |
| Authors | Dong, Wujie Zhao, Yantao Cai, Mingzhi Dong, Chenlong Ma, Wenqin Pan, Jun Lv, Zhuoran Dong, Hang Dong, Yanhao Tang, Yufeng Huang, Fuqiang |
| Affiliation | Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine M, Shanghai 200050, Peoples R China Peking Univ, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China Univ Chinese Acad Sci, Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China |
| Keywords | ELASTIC PROPERTIES PERFORMANCE ELECTROLYTES GRAPHENE SILICON LI |
| Issue Date | Jan-2023 |
| Publisher | SMALL |
| Abstract | High-capacity metal oxides based on non-toxic earth-abundant elements offer unique opportunities as advanced anodes for lithium-ion batteries (LIBs). But they often suffer from large volumetric expansion, particle pulverization, extensive side reactions, and fast degradations during cycling. Here, an easy synthesis method is reported to construct amorphous borate coating network, which stabilizes conversion-type iron oxide anode for the high-energy-density semi-solid-state bipolar LIBs. The nano-borate coated iron oxide anode has high tap density (1.6 g cm(-3)), high capacity (710 mAh g(-1) between 0.5 - 3.0 V, vs Li/Li+), good rate performance (200 mAh g(-1) at 50 C), and excellent cycling stability (approximate to 100% capacity resention over 1,000 cycles at 5 A g(-1)). When paired with high-voltage cathode LiCoO2, it enables Cu current collector-free pouch-type classic and bipolar full cells with high voltage (7.6 V with two stack layers), achieving high energy density (approximate to 350 Wh kg(-1)), outstanding power density (approximate to 6,700 W kg(-1)), and extended cycle life (75% capacity retention after 2,000 cycles at 2 C), superior to the state-of-the-art high-power LIBs using Li4Ti5O12 anode. The design and methodology of the nanoscale polyanion-like coating can be applied to other metal oxides electrode materials, as well as other electrochemical materials and devices. |
| URI | http://hdl.handle.net/20.500.11897/669299 |
| ISSN | 1613-6810 |
| DOI | 10.1002/smll.202207074 |
| Indexed | SCI(E) |
| Appears in Collections: | 化学与分子工程学院 稀土材料化学与应用国家重点实验室 |
