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Introduction", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "expanded_partial_docling_crop" }, { "asset_index": 3, "element_id": "d9ba3972-4dfb-5905-b785-0126eaf246b8", "element_type": "figure", "label": "Fig. 2", "page": 2, "bbox": [ 90.0, 521.38, 409.88, 160.32 ], "caption": "Figure 2. a) Normalized absorption spectra for various manganese reference compounds with the inset showing an enlarged pre-edge region of four compounds. b) Variation in the position of the 1s → 4p peak (dashed blue line) and the average metal-ligand bond length (solid red line) for these compounds.", "caption_preview": "Figure 2. a) Normalized absorption spectra for various manganese reference compounds with the inset showing an enlarged pre-edge region of four compounds. b) Variation in the position of the 1s → 4p peak (dashed blue li…", "caption_source": "region_rescue_caption", "section": "2 . Results", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "expanded_partial_docling_crop" }, { "asset_index": 4, "element_id": "ef3d5b3f-33fc-5f3c-a130-a75202fefa94", "element_type": "figure", "label": "Fig. 2", "page": 2, "bbox": [ 90.0, 521.38, 409.88, 160.32 ], "caption": "Figure 2. a) Normalized absorption spectra for various manganese reference compounds with the inset showing an enlarged pre-edge region of four compounds. b) Variation in the position of the 1s → 4p peak (dashed blue line) and the average metal-ligand bond length (solid red line) for these compounds.", "caption_preview": "Figure 2. a) Normalized absorption spectra for various manganese reference compounds with the inset showing an enlarged pre-edge region of four compounds. b) Variation in the position of the 1s → 4p peak (dashed blue li…", "caption_source": "region_rescue_caption", "section": "2.1 . XANES", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "expanded_partial_docling_crop" }, { "asset_index": 5, "element_id": "26d8332b-d77f-5b34-b74b-8c4eb3ed4c1e", "element_type": "figure", "label": "Fig. 3", "page": 3, "bbox": [ 61.65, 70.31, 218.87, 174.4 ], "caption": "Figure 3. Normalized absorption spectra for various Li 2 MnO 3 samples along with those of Mn 3 + and Mn 4 + reference compounds. The inset shows the pre-edge region.", "caption_preview": "Figure 3. Normalized absorption spectra for various Li 2 MnO 3 samples along with those of Mn 3 + and Mn 4 + reference compounds. The inset shows the pre-edge region.", "caption_source": "direct_caption_ref", "section": "2.1 . XANES", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 6, "element_id": "5c5c3065-8aec-5353-aad0-3c0c1581806a", "element_type": "figure", "label": "Fig. 4", "page": 3, "bbox": [ 76.38, 518.92, 445.39, 172.8 ], "caption": "Figure 4. a) k 3 -weighted EXAFS signals χ ( k ) and b) their Fourier transforms for Li 2 MnO 3 samples in the pristine state (solid black line), when charged to 5 V during the fi rst cycle (dashed red line) and when charged to 5 V during the 33 rd cycle (dotted blue line).", "caption_preview": "Figure 4. a) k 3 -weighted EXAFS signals χ ( k ) and b) their Fourier transforms for Li 2 MnO 3 samples in the pristine state (solid black line), when charged to 5 V during the fi rst cycle (dashed red line) and when ch…", "caption_source": "region_rescue_caption", "section": "2.1 . XANES", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "expanded_partial_docling_crop" }, { "asset_index": 7, "element_id": "f8c3ce66-36dd-5537-864a-244fd96270d7", "element_type": "figure", "label": "Fig. 4", "page": 3, "bbox": [ 76.38, 518.92, 445.39, 172.8 ], "caption": "Figure 4. a) k 3 -weighted EXAFS signals χ ( k ) and b) their Fourier transforms for Li 2 MnO 3 samples in the pristine state (solid black line), when charged to 5 V during the fi rst cycle (dashed red line) and when charged to 5 V during the 33 rd cycle (dotted blue line).", "caption_preview": "Figure 4. a) k 3 -weighted EXAFS signals χ ( k ) and b) their Fourier transforms for Li 2 MnO 3 samples in the pristine state (solid black line), when charged to 5 V during the fi rst cycle (dashed red line) and when ch…", "caption_source": "region_rescue_caption", "section": "2.2 . 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EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 9, "element_id": "573a990b-6d2f-5ed0-8915-f1bbb7c5ba94", "element_type": "figure", "label": "Fig. 6", "page": 4, "bbox": [ 58.3, 518.52, 218.23, 172.54 ], "caption": "Figure 6. EXAFS fi t to the data of Li 2 MnO 3 sample in the pristine state. The dotted lines indicate the fi tting range.", "caption_preview": "Figure 6. EXAFS fi t to the data of Li 2 MnO 3 sample in the pristine state. The dotted lines indicate the fi tting range.", "caption_source": "direct_caption_ref", "section": "2.2 . EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 10, "element_id": "973b8351-91d0-5e8d-a827-3ea3fdff9598", "element_type": "figure", "label": "Fig. 7", "page": 5, "bbox": [ 74.56, 70.32, 447.4, 175.64 ], "caption": "Figure 7. EXAFS fi ts to the data of Li 2 MnO 3 samples a) when charged to 5 V and b) when discharged to 2 V during the fi rst cycle.", "caption_preview": "Figure 7. EXAFS fi ts to the data of Li 2 MnO 3 samples a) when charged to 5 V and b) when discharged to 2 V during the fi rst cycle.", "caption_source": "direct_caption_ref", "section": "2.2 . EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 11, "element_id": "1ceb873b-87ba-5e2d-a9fe-cc315505480f", "element_type": "figure", "label": "Fig. 8", "page": 5, "bbox": [ 317.7, 278.81, 218.0, 175.49 ], "caption": "Figure 8. EXAFS data of the LiMn 2 O 4 spinel.", "caption_preview": "Figure 8. EXAFS data of the LiMn 2 O 4 spinel.", "caption_source": "direct_caption_ref", "section": "2.2 . EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 12, "element_id": "1efb2e67-e63a-583b-80e7-9897c297f909", "element_type": "figure", "label": "Fig. 9", "page": 5, "bbox": [ 72.74, 531.7, 451.84, 174.0 ], "caption": "Figure 9. EXAFS fi ts to the data of Li 2 MnO 3 samples a) when charged to 5 V and b) when discharged to 2 V during the 33 rd cycle.", "caption_preview": "Figure 9. EXAFS fi ts to the data of Li 2 MnO 3 samples a) when charged to 5 V and b) when discharged to 2 V during the 33 rd cycle.", "caption_source": "nearby_text_caption", "section": "2.2 . EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 13, "element_id": "a4202aab-a22e-5c76-bf02-f0e578822f75", "element_type": "figure", "label": "Fig. 10", "page": 6, "bbox": [ 57.97, 69.93, 217.96, 175.31 ], "caption": "Figure 10. Comparison of the metal-ligand bond length for the electrochemically cycled Li 2 MnO 3 samples during the fi rst and 33 rd cycles. The asterisk (*) represents the charged-discharged samples during the 33 rd cycle. The solid line indicates the average Mn 4 + -O bond length obtained by fi tting the EXAFS data of the MnO 2 reference compound and dotted lines indicate statistical uncertainties of the fi tted value.", "caption_preview": "Figure 10. Comparison of the metal-ligand bond length for the electrochemically cycled Li 2 MnO 3 samples during the fi rst and 33 rd cycles. The asterisk (*) represents the charged-discharged samples during the 33 rd c…", "caption_source": "direct_caption_ref", "section": "2.2 . EXAFS", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 14, "element_id": "cec0805e-9f5e-57de-9f98-3c51e5419f95", "element_type": "figure", "label": "Fig. 11", "page": 6, "bbox": [ 70.98, 527.24, 445.98, 174.41 ], "caption": "Figure 11. Structural disorder in charged-discharged samples of Li 2 MnO 3 a) during the fi rst cycle and b) during the 33 rd cycle.", "caption_preview": "Figure 11. Structural disorder in charged-discharged samples of Li 2 MnO 3 a) during the fi rst cycle and b) during the 33 rd cycle.", "caption_source": "direct_caption_ref", "section": "3.1 . XANES", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" }, { "asset_index": 15, "element_id": "dd95ee44-bf38-54a5-8e39-964289d337d0", "element_type": "figure", "label": "Fig. 12", "page": 8, "bbox": [ 78.11, 68.94, 435.14, 142.68 ], "caption": "Figure 12. Stacking sequence of close-packed oxygen layers in a) O3 structure of Li 2 MnO 3 ( C2 / m ) [ 22 ] and b) P3 structure ( R 3 m ) of proton-exchanged material. [ 59 ] Note that O-H-O bonds are asymmetric in the P3 structure.", "caption_preview": "Figure 12. Stacking sequence of close-packed oxygen layers in a) O3 structure of Li 2 MnO 3 ( C2 / m ) [ 22 ] and b) P3 structure ( R 3 m ) of proton-exchanged material. [ 59 ] Note that O-H-O bonds are asymmetric in th…", "caption_source": "direct_caption_ref", "section": "3.2.1 . Structural Changes During the First Charge", "confidence": 0.82, "suppress_in_index": false, "duplicate_of": "", "duplicate_reason": "", "visual_group_id": "", "parent_visual_label": "", "parent_visual_type": "", "region_rescue_reason": "" } ] }