 | 濉戞枡 | 姍¤兌 | 綰ょ淮 | 娑傛枡涓庢補澧?/a> | 鑳剁矘鍓?/a> | 澶嶅悎鏉愭枡 | 鐭沖寲 | 鍖栧伐 | 浠櫒浠〃 | 鏂頒駭涓?/a> | 涓撻 | 榪斿洖棣栭〉 |
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| 濉戞枡 | 姍¤兌 | 綰ょ淮 | 娑傛枡涓庢補澧?/a> | 鑳剁矘鍓?/a> | 澶嶅悎鏉愭枡 | 鐭沖寲 | 鍖栧伐 | 浠櫒浠〃 | 鏂頒駭涓?/a> | 涓撻 | 榪斿洖棣栭〉 |
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閿傞噾灞炴嫢鏈夊崄鍊嶄簬浼犵粺鐭沖ⅷ鐢墊瀬鐨勬瘮瀹歸噺錛屽叾鎷ユ湁瓚呴珮鐞嗚瀹歸噺 錛?/span>3860 mAh g-1錛夊拰鏋佷綆鐨勭數鍖栧鐢靛娍 錛?/span>-3.04 V vs. 鏍囧噯姘㈢數鏋侊級銆傚洜姝わ紝琚叕璁や負鏄姪鍔涗笅涓浠ｉ攤鐢墊睜瀹炵幇鑳介噺瀵嗗害楂樹簬500 Wh/kg鐩爣涓渶鏈夊笇鏈涚殑璐熸瀬鏉愭枡銆傜劧鑰岋紝閿傞噾灞炶〃闈㈢敱浜庢灊鏅剁殑鐢熼暱鍜屾樉钁楃殑浣撶Н鍙樺寲鑰岀敓鎴愮殑涓嶇ǔ瀹氱殑SEI鑶滄槸瀵艱嚧閿傞噾灞炵數姹犱綆鐨勫簱浼︽晥鐜囥佸驚鐜ц兘蹇熻“閫銆佺數瑙ｆ恫娑堣椼佺敋鑷沖埡絀塊殧鑶滅煭璺殑涓昏鍥犵礌銆傜爺絀惰〃鏄庯紝瀵歸攤閲戝睘琛ㄩ潰榪涜鐣岄潰澶勭悊錛屾槸鎻愰珮鐢墊睜鎬ц兘銆佸疄鐜伴珮鑳介噺瀵嗗害鐨勬湁鏁堟柟寮忋傝繎鏈熷叧浜庨攤閲戝睘鐣岄潰鐨勮璁″線寰闆嗕腑浜庡紩鍏ラ挐鍖栦繚鎶ゅ眰浣滀負閿傞噾灞炴矇縐殑緙撳啿鍖哄煙錛屽湪淇濊瘉鐗╃悊鍖栧鐩稿鎬х殑鍓嶆彁涓嬮氳繃鎺у埗閿傜瀛愭祦鏉ヨ幏寰楁洿鍧囧寑鐨勯攤娌夌Н榪囩▼銆傝繖鏍風殑鐣岄潰淇濇姢灞傞氬父浼氬紩鍏ヤ竴瀹氳川閲忥紝寰寰瓚呰繃閿傞噾灞炶啘鏈韓鐨勮川閲忥紝鍥犳涓瀹氱▼搴︿笂鐗虹壊浜嗛攤閲戝睘甯︽潵鐨勮兘閲忓瘑搴︿紭鍔褲傞氳繃棰勫鐞嗙敓鎴愮ǔ瀹氬彲闈犵殑SEI鑶滀紭鍖栭攤閲戝睘鐨勬柟寮忛矞鏈夋姤閬撱?/span>
榪戞棩錛屽▉鏂悍鏄熷ぇ瀛﹀瘑灝旀矁鍩哄垎鏍?span style="font-family:Calibri;">Junjie Niu璇鵑緇勭殑鐮旂┒浜哄憳鍦ㄩ攤閲戝睘鐢墊瀬鐨勪紭鍖栨柟闈㈠彇寰楁樉钁楄繘灞曘傞氳繃鍦?span style="font-family:Calibri;">30寰背鍘氱殑瓚呰杽閿傞噾灞炶〃闈㈢殑鍘熶綅鍖栧鍙嶅簲鐢熸垚鍖呭惈閿傜洂涓庢湁鏈烘煍鎬ч珮鍒嗗瓙鏉愭枡鐩哥粨鍚堬紝鏋勫緩鍏鋒湁紼沖畾鏈烘鎬ц兘鍜岀數鍖栧鎬ц兘鐨勪漢宸?span style="font-family:Calibri;">SEI鑶滐紝瀹炵幇閿傞噾灞炵數鏋佹樉钁楁彁楂樼殑寰幆鎬ц兘銆傚湪姝ょ粨鏋勪腑錛屾湁鏈烘煍鎬ч珮鍒嗗瓙錛堣仛姘ㄥ熀鑵堬級緗戠粶鏈夊姪浜庨攤閲戝睘閫傚簲浣撶Н鍙樺寲閫犳垚鐨勫脊鎬у艦鍙橈紝鏈夋晥閬垮厤寰幆榪囩▼涓鐥曠殑褰㈡垚銆傚墠椹變綋涓庤秴钖勯攤閲戝睘鍙嶅簲褰㈡垚鐨勯噾灞?span style="font-family:Calibri;">-鏈夋満-鐩?span style="font-family:Calibri;">LiCN鍙湪閿傞噾灞炰笌浜哄伐SEI鑶滀箣闂村艦鎴愮揣瀵嗚岀ǔ瀹氱殑榪炴帴銆傚悓鏃訛紝鍧囧寑鍒嗗竷鐨勬棤鏈洪攤鐩愬拰姘熷寲閿傚彲鏈夋晥鎻愰珮紱誨瓙鐢靛鐜囷紝鏈夊姪浜庡艦鎴愭洿钖勭殑紼沖畾鐨?span style="font-family:Calibri;">SEI錛屼粠鑰屽噺灝戝驚鐜繃紼嬩腑閿傜瀛愮殑鎹熷け銆傚湪XPS娣卞害鍥捐氨琛ㄥ緛涓紝鍚愛鍩哄洟鐨勬煍鎬ч珮鍒嗗瓙緗戠粶璐┛鏁翠釜浜哄伐SEI鑶滀笂琛ㄩ潰錛屾繁鍏ヨ〃闈㈢害70綰崇背錛涙棤鏈洪攤鐩?span style="font-family:Calibri;">LiTFSI璐┛鏁翠釜浜哄伐SEI鑶滆嚦220 綰崇背錛涙盁鍖栭攤鏇存槸宓屽叆閿傞噾灞炲唴閮ㄦ暟鐧劇撼綾熾傚湪鐢墊睜嫻嬭瘯涓紝浜哄伐SEI鑶滈澶勭悊閿傞噾灞炵數鏋佸彲鍦?span style="font-family:Calibri;">3mA/cm2鐢墊祦瀵嗗害涓嬪驚鐜?span style="font-family:Calibri;">2000灝忔椂鍚庡疄鐜?span style="font-family:Calibri;">80mV鐨勪綆榪囩數浣嶃備綔涓哄鐓э紝鏈鐞嗛攤閲戝睘鐢墊瀬鍦ㄧ浉鍚岀數嫻佸瘑搴︿笅寰幆300灝忔椂鍚庡嚭鐜扮煭璺傜爺絀跺湪璐數瑙ｆ恫鏉′歡涓?nbsp;錛堝彲杈懼埌楂樿兘閲忓瘑搴︼級鍙戠幇浜哄伐SEI鑶滄湁鏁堝歡緙撲簡閿傞噾灞炲鐢佃В娑茬殑娑堣椼備簬姝ゅ悓鏃訛紝浣跨敤浜哄伐SEI棰勫鐞嗛攤閲戝睘涓鴻礋鏋佺殑瀹歸噺涓?span style="font-family:Calibri;">300mAh鐨勮蔣鍖呯數姹犲彲鍦ㄥ驚鐜?span style="font-family:Calibri;">150嬈″悗淇濈暀81%浠ヤ笂鐨勫閲忥紝榪滈珮浜庝嬌鐢ㄦ湭澶勭悊閿傞噾灞炵數鏋佺殑鍚屽閲忚蔣鍖呯數姹犮?/span>
鍥?span style="font-family:Calibri;">1. 錛?span style="font-family:Calibri;">a錛変漢宸?/span>SEI鐨勫埗澶囪繃紼嬩互鍙婁笌緇撴瀯銆傞攤閲戝睘琛ㄩ潰涓庯紙b錛?/span>CAN鍜岋紙c錛?/span>ACN, LiTFSI錛?span style="font-family:Calibri;">HFE娣峰悎婧舵恫鍙嶅簲鍚庣殑SEM鐓х墖銆傚驚鐜繃紼嬩腑鍦紙d錛夋湭澶勭悊閿傞噾灞炶〃闈㈠拰錛?span style="font-family:Calibri;">e錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰SEI鐨勫艦鎴愯繃紼嬪強緇撴瀯銆?/span>
鍥?span style="font-family:Calibri;">2. 錛?span style="font-family:Calibri;">a錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗗悗鐨勯攤閲戝睘琛ㄩ潰鐨?/span> STEM ADF鐓х墖鐩稿簲鐨勫厓绱犲垎甯冨浘銆傦紙b錛?span style="font-family:Calibri;">HRTEM紜浜哄伐SEI涓?span style="font-family:Calibri;">LiF鍜?span style="font-family:Calibri;">LiCN鐨勫艦鎴愩傦紙c-f錛?span style="font-family:Calibri;">Li錛?span style="font-family:Calibri;">C錛?span style="font-family:Calibri;">N錛屽拰F K-edge鐨?span style="font-family:Calibri;">EELS鍥捐氨銆傦紙g錛夋湭澶勭悊閿傞噾灞炶〃闈笌錛?span style="font-family:Calibri;">h錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰鐨?span style="font-family:Calibri;">XPS鍥捐氨銆?/span>
鍥?span style="font-family:Calibri;">3. 寰幆鍚庣殑浜哄伐SEI棰勫鐞嗛攤閲戝睘琛ㄩ潰鐨?span style="font-family:Calibri;">XPS娣卞害鍥捐氨銆?/span>
鍥?/span>4. 錛?/span>a-c錛夋湭澶勭悊閿傞噾灞炲拰錛?/span>d-f錛変漢宸?/span>SEI棰勫鐞嗛攤閲戝睘寰幆榪囩▼紺烘剰鍥懼強鍦?/span>1.0 mA/cm2鐢墊祦瀵嗗害銆?/span>1.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑闀閿傚拰鍓ョ鍚庣殑SEM鐓х墖銆備漢宸?/span>SEI棰勫鐞嗛攤閲戝睘鍒嗗埆鍦紙g,i錛?/span>3.0 mA/cm2鐢墊祦瀵嗗害銆?/span>3.0 mAh/cm2鑳介噺瀵嗗害涓嬶紝鍜岋紙h,j錛?/span>5.0 mA/cm2鐢墊祦瀵嗗害銆?/span>5.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑闀閿傚拰鍓ョ鍚庣殑SEM鐓х墖銆傦紙k,l錛夋湭澶勭悊閿傞噾灞炲拰錛?/span>m,n錛変漢宸?/span>SEI棰勫鐞嗛攤閲戝睘寰幆鍓嶅悗鐨?/span>3D琛ㄩ潰褰㈣矊銆?/span>
鍥?span style="font-family:Calibri;">5. 錛?span style="font-family:Calibri;">a-d錛?span style="font-family:Calibri;">3.0 mA/cm2鐢墊祦瀵嗗害銆?/span>3.0 mAh/cm2鑳介噺瀵嗗害涓嬬殑寰幆鎬ц兘銆傦紙e錛夋湭澶勭悊閿傞噾灞炰笌錛?span style="font-family:Calibri;">f錛変漢宸?span style="font-family:Calibri;">SEI棰勫鐞嗛攤閲戝睘浜ゆ祦闃繪姉鍥俱傦紙g錛夐鍦堝驚鐜墠鍚?span style="font-family:Calibri;">NPV鍥俱?/span>
鍥?span style="font-family:Calibri;">6. NCA涓庯紙a,b錛夋湭澶勭悊閿傞噾灞烇紝錛?/span>c,d錛?/span> SEI棰勫鐞嗛攤閲戝睘錛?/span>10.0 vol% ACN錛夛紝錛?/span>e,f錛?/span> SEI棰勫鐞嗛攤閲戝睘錛?/span>20.0 vol% CAN錛夊湪1.25 ?L/mAh錛?/span>2.5 ?L/mAh錛屽拰5.0?L/mAh鐨勮傳鐢佃В璐ㄧ姸鎬佷笅鐨勫驚鐜ц兘錛屼互鍙婂湪5.0 ?L/mAh鐢佃В璐ㄧ姸鎬佷笅絎?span style="font-family:Calibri;">1錛岀5錛岀20錛屽拰絎?span style="font-family:Calibri;">50鍦堢殑鍏呮斁鐢墊洸綰褲?br />
緇撳悎鏈夋満-鏃犳満鏉愭枡鐨勯珮鎬ц兘浜哄伐SEI鑶滅殑鏋勫緩鍙湁鏁堟彁楂橀攤閲戝睘鐢墊瀬鐨勬ц兘錛屼負鏇村彲闈犵殑銆佹洿瀹夊叏鐨勯珮鑳介噺瀵嗗害閿傜數姹犵數鏋佺殑璁捐涓庣爺鍙戞彁渚涗簡鏂扮殑鎬濊礬銆傜浉鍏崇爺絀舵垚鏋滃凡鍙戣〃鍦ㄣ?strong>ACS Applied Materials & Interfaces銆嬫湡鍒婏紝棰樹負鈥?/span>Pre-Solid Electrolyte Interphase-Covered Li Metal Anode with Improved Electro-Chemo-Mechanical Reliability in High-Energy Density Batteries鈥?/span>(DOI: 10.1021/acsami.1c05966)銆傞櫎Junjie Niu鏁欐巿澶栵紝浣滆呰繕鍖呮嫭闄堝笇鍗氬＋鍜屽皻鏄庝紵鍗氬＋銆?br />
鐩稿叧閾炬帴
https://doi.org/10.1021/acsami.1c05966