 | 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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榪戞棩錛屽崡浜伐涓氬ぇ瀛?/span>鍥烘佺瀛愪笌鏂拌兘婧愭妧鏈棰樼粍鍒╃敤涓縐嶆湁鏁堢殑涓ゆ鐩稿弽搴旀硶鏋勫緩鍑洪珮瀵肩數鎬с侀珮媧繪х殑鍗曢挋閽涚熆鍌寲鍓傦紝鎺㈢儲浜嗚縐嶆柟娉曞湪鎻愬崌閽欓挍鐭垮湪姘ф瀽鍑猴紙OER錛変笌姘㈡瀽鍑猴紙HER錛夋椿鎬т腑鐨勪綔鐢ㄤ互鍙婄數鑽峰啀鍒嗗竷瀵瑰偓鍖栨椿鎬х殑褰卞搷銆?/span>鐩稿叧鎴愭灉浠ユ爣棰樹負鈥?/span>Engineering Charge Redistribution within Perovskite Oxides for Synergistically Enhanced Overall Water Splitting鈥?/span>鍙戣〃鍦?/span>ACS Materials Letters銆傚崡浜伐涓氬ぇ瀛﹀崥澹爺絀剁敓鐜嬩範涔犱負璁烘枃絎竴浣滆呫?/span>閫氳浣滆咃細鍛ㄥ憚鏁欐巿錛岄偟瀹楀鉤鏁欐巿銆?/span>
鍥?/span>1鍩虹琛ㄥ緛銆傦紙a錛変袱姝ョ浉鍙嶅簲娉曞埗澶囪繃紼嬬ず鎰忓浘錛?/span>(b) XRD錛?/span>(c)SEM錛?/span>(d) HRTEM鍜?/span>(e) 鍏冪礌鍒嗗竷銆?/span>
璇ュ伐浣滈氳繃涓ゆ鐩稿弽搴旀硶鑱斿悎鍏冪礌鎺烘潅鍒跺寰楀埌鍗曢挋閽涚熆LSFCP-55錛屽鍥?/span>1a鎵紺猴紝棣栧厛鍚堟垚浜嗛挋閽涚熆LSF錛岀劧鍚庣浜屾寮曞叆涓?/span>LSF涓瀹氭瘮渚嬬殑SCP (SrCO3銆?/span>Co3O4銆?/span>NH4H2PO4)銆傚湪鐩稿弽搴旇繃紼嬩腑錛岃繖浜涚瀛愬湪楂樻俯涓嬮氳繃閽欓挍鐭?/span>LSF琛ㄩ潰榪呴熸墿鏁ｅ埌鍏朵綋鐩革紝鏈緇堝艦鎴愰挋閽涚熆LSFCP-55銆傞氳繃XRD銆?/span>SEM鍜?/span>HRTEM琛ㄥ緛錛岃瘉鏄庤縐嶆柟娉曞緱鍒扮殑閽欓挍鐭塊綺掓洿灝忥紝騫朵笖鎵闇鐨勭厖鐑ф俯搴︽洿浣庛?/span>姝ゅ錛岄氳繃姝ょ鏂規硶鍒跺鐨?/span>LSFCP-55鍏鋒湁杈冮珮鐨勭數瀵肩巼錛?/span>94.2 S cm-1錛夛紝榪滆繙楂樹簬LSF錛?/span>5.5 S cm-1錛夈?/span>
鍥?/span>2 鐢靛寲瀛﹁〃寰併傦紙a錛夋瘮媧繪э紱錛?/span>b錛?/span>OER闃繪姉鍥捐氨錛涳紙c錛?/span>HER闃繪姉鍥捐氨錛涳紙d錛夊叏瑙ｆ按瑁呯疆紺烘剰鍥撅紱浠ヤ笉鍚屽偓鍖栧墏浣滀負闃蟲瀬鍜岄槾鏋佺殑鍏ㄨВ姘磋緗殑錛?/span>e錛夋瀬鍖栨洸綰垮拰錛?/span>f錛夌ǔ瀹氭с?/span>
鍒╃敤涓夌數鏋佷綋緋誨涓嶅悓鍌寲鍓傜殑OER鍜?/span>HER媧繪ц繘琛屾祴璇曪紝鍙戠幇閫氳繃涓ゆ鐩稿弽搴旀硶鑱斿悎鍏冪礌鎺烘潅鍒跺寰楀埌鐨?/span>LSFCP-55鍏鋒湁鐩稿浜?/span>LSF鍜?/span>SCP鏄捐憲鎻愰珮鐨?/span>OER鍜?/span>HER媧繪у拰鏈緛媧繪э紙鍥?/span>2a錛夈傛澶栵紝閫氳繃絳夋晥鐢佃礬鍥炬嫙鍚堝緱鍒板偓鍖栧墏鐨勭數鍖栧闃繪姉璋?/span>(EIS)銆傛墍鏈夊偓鍖栧墏鍦?/span>Nyquist鍥句笂閮芥樉紺轟負鍗婂渾錛屽寘鎷數鑽瘋漿縐葷數闃?/span>(Rct)銆佹繪濮嗙數闃?/span>(Rs)鍜屾亽鐩稿厓浠?/span>(濡傚浘2b-c鎵紺?/span>)銆傚茍涓旓紝瀵逛簬OER鍜?/span>HER錛?/span>LSFCP-55鍧囨樉紺哄嚭鏈灝忕殑Rct錛岃繖琛ㄦ槑鍏跺弽搴斿姩鍔涘鏈蹇紝鐢靛瓙浼犻掗熷害鏈蹇?/span>閴翠簬LSFCP-55浼樿秺鐨勫弻鍔熻兘鍌寲媧繪у拰紼沖畾鎬э紝灝嗗叾搴旂敤浜庣數瑙ｆ按瑁呯疆錛屽鍥?/span>2e錛?/span>LSFCP-55 ( ) | | LSFCP-55(-)鍏ㄨВ姘磋緗湪10mA cm-2鐨勭數嫻佸瘑搴︿笅鏄劇ず鍑?/span>1.57 V鐨勪綆鐢典綅錛屼綆浜?/span>RuO2 ( ) | | 20 pt / C (-) (1.60 V)銆傛澶?/span>, LSFCP-55 ( ) || LSFCP-55(-)鐢佃В姘磋緗?/span>鍏鋒湁杈冨ソ鐨勬暣浣?/span>鐢佃В姘寸ǔ瀹氭?/span>錛?/span>鍦?/span>50 h鐨勬椂闂村唴鏄劇ず鍑鴻緝灝忕殑鐢靛帇琛板噺錛?/span>浼樹簬RuO2 ( ) || 20Pt/C(-)銆?/span>
鍥?/span>3 鍩虹琛ㄥ緛銆?/span>XPS錛?/span>(a) Fe 2p錛?/span>(b) Co 2p錛?/span>XPS O 1s錛?/span>(c) LSF錛?/span>(d) SCP鍜?/span>(e) LSFCP-55錛?/span>(f) LSF錛?/span>SCP錛?/span>LSFCP-55鍜?/span>LSFCP-B鏍峰搧鐨?/span>O2-TPD鏇茬嚎銆?/span>
閲囩敤 XPS鐮旂┒鍌寲鍓傜殑鐢靛瓙鐘舵併?/span>鍙戠幇LSFCP-55鐩稿浜?/span>LSF鍜?/span>LSFCP-B鍏鋒湁杈冮珮鍚噺鐨?/span>Fe4 (16.8 %錛屽浘3a)錛屽叾鍙互鍔犲ぇFe 3d涓?/span>O 2p鐨勬潅鍖栫▼搴﹀茍涓斿姞閫?/span>OER榪囩▼涓殑鍘昏川瀛愬寲閫熷害錛屽洜姝ゅ彲浠ユ彁楂?/span>OER鍜?/span>HER媧繪с傜浉瀵逛簬SCP錛?/span>LSFCP-55鍏鋒湁杈冧綆鐨?/span>Co浠鋒侊紙鍥?/span>3b錛夈傛澶栵紝Co3 / Co4 鐢靛瓙瀵圭殑瀛樺湪涔熷彲浠ユ彁楂樺偓鍖栨椿鎬с傜粨鍚?/span>XPS O1s, LSFCP-55涓殑鏅舵牸姘т綅緗浉瀵逛簬LSF鍜?/span>SCP鍏鋒湁鏄庢樉鐨勬鍋忕Щ錛堝浘3c-e錛夛紝榪欎唬琛ㄩ儴鍒嗛潪媧繪ф櫠鏍兼哀O2-琚偓鍖栧墏LSFCP-55涓殑寮虹數瀛愮浉浜掍綔鐢ㄦ縺媧伙紝杞彉涓烘椿鎬ф櫠鏍兼哀O2-x銆傜粨鍚?/span>Fe 2p 鍜?/span>Co 2p錛?/span>LSFCP-55涓?/span>Fe錛?/span>Co鍜?/span>O紱誨瓙鐨勪環鎬佸彉鍖栧彲鑳芥槸鐢變簬媧繪?/span>Fe鍜屽懆鍥村師瀛愮殑寮虹數鑽峰啀鍒嗗竷瀵艱嚧鐨?/span>錛屽嵆閫氳繃Fe4 -O2-x-Co3 榪涜浜?/span>澶ч噺鐨勭數瀛愯漿縐匯傞氳繃榪欑寮傚父鐨勭數鑽峰啀鍒嗛厤錛屼紭鍖栦簡姘寸殑鍚擱檮鍜岃В鍚歌兘浠ュ強浼樺寲浜嗗浜?/span>OER鍙嶅簲涓棿鐗╃ (M-OH銆?/span>M-OOH鍜?/span>M-O)鍜?/span>HER鍙嶅簲涓棿媧繪х墿縐?/span> (H )鐨?/span>鍚擱檮錛屼粠鑰屾彁楂樹簡OER鍜?/span>HER鐨勬椿鎬?/span>銆?/span>O2-TPD錛堝浘3f錛夊拰H2-TPD錛堝浘4a錛?/span>鏇茬嚎涔熻瘉鏄庝簡浠ヤ笂鐚滄祴銆?/span>
鍥?/span>4 鍩虹琛ㄥ緛銆?/span>(a) LSF錛?/span>SCP錛?/span>LSFCP-55鍜?/span>LSFCP-B鏍峰搧鐨?/span>H2-TPD鏇茬嚎錛?/span>(b) LSF錛?/span>SCP錛?/span>(c) LSFCP-55鍜?/span>LSFCP-B鐨勬帴瑙﹁錛?/span>(d)鍌寲鍓傜殑鎷夋浖鍏夎氨錛?/span>(e) 鍌寲鍓傜殑OER 鐢墊祦瀵嗗害涓?span style="font-family:;">pH鐨勫叧緋伙紱(f)鏅舵牸姘?/span>鐩存帴鍙備笌OER鍙嶅簲錛氬師浣嶈川璋?/span>銆?/span>
鐩稿浜?/span>LSF(142.7?)銆?/span>SCP(132.0?)鍜?/span>LSFCP(129.9?)錛?/span>LSFCP-55鐨勬帴瑙﹁(99.2?)杈冨皬錛堝浘4b-c錛?/span>錛?/span>榪?/span>璇佸疄浜嗛挋閽涚熆鐤忔按鎬ц川鐨勬敼鍠勶紝鏈夊埄浜庝績榪涙按瑙ｇ鐢熸垚姘㈠拰姘с傛澶栵紝LSFCP-55鍐呴儴鏈夊埄鐨勭數鑽峰啀鍒?/span>甯?/span>鍙兘浼氬寮洪噾灞炲師瀛愬拰姘у師瀛愪箣闂寸殑鏉傚寲錛屼粠鑰?/span>鎻愰珮HER鍜?/span>OER鐨勭數瀛愯漿縐?/span>鑳藉姏(榪欎笌EIS錛?/span>Raman錛屽浘4d緇撴灉涓鑷?/span>)銆傚煎緱娉ㄦ剰鐨勬槸錛岃繖縐嶇數瀛愮浉浜掍綔鐢ㄥ拰楂樺鐢墊х殑瀛樺湪涔熻〃鏄庝簡榪欑涓ゆ鍒跺鏂規硶鐨勬湁鏁堟с傛澶栵紝閴翠簬閮ㄥ垎闈炴椿鎬ф櫠鏍兼哀O2-琚偓鍖栧墏LSFCP-55涓殑寮虹數瀛愮浉浜掍綔鐢ㄦ縺媧伙紝杞彉涓烘椿鎬ф櫠鏍兼哀O2-x錛屽彲鑳芥湁閮ㄥ垎鏅舵牸姘у弬涓?/span>OER鍙嶅簲銆傛垜浠鍏堥氳繃嫻嬭瘯涓嶅悓pH涓嬬殑OER鎬ц兘錛屽茍緇樺埗鐢墊祦瀵嗗害涓?/span>pH鐨勫叧緋誨浘錛屽彂鐜?/span>LSFCP-55鐨?/span>OER媧繪ф樉紺哄嚭杈冨己鐨?/span>pH渚濊禆鎬э紙鍥?/span>4e錛夈傚洜姝わ紝鎴戜滑鍊熷姪鍘熶綅璐ㄨ氨榪涜18O媯嫻嬩互璇佹槑鏅舵牸姘у弬涓庡弽搴旂殑鍙戠敓銆傚鍥?/span>4f鎵紺猴紝鍦?/span>LSFCP-55鍌寲鍓傜殑嫻嬭瘯榪囩▼涓紝璐ㄨ氨媯嫻嬪埌澶ч噺34O2 (16O18O)錛岃瘉瀹炰簡18O鐨勫瓨鍦紝浠ュ強LSFCP-55涓洿澶氱殑鏅舵牸姘у弬涓庝簡OER鍙嶅簲銆傜浉姣斾箣涓嬶紝LSF鍜?/span>SCP媯嫻嬪埌鐨?/span>34O2鍚噺杈冨皯錛岃〃鏄?/span>鍏朵腑杈冨皯鐨?/span>鏅舵牸姘у弬涓?/span>OER鍙嶅簲銆傚洜姝わ紝LSFCP-55涓殑鏅舵牸姘ц寮虹數鑽峰啀鍒?/span>甯?/span>嬋媧?/span>錛屼粠鑰屽弬涓庡埌OER鍙嶅簲榪囩▼涓?/span>
榪欓」宸ヤ綔涓嶄粎鎻ず浜嗙數鑽峰啀鍒嗗竷鍜屾縺媧葷殑鏅舵牸姘у鎻愰珮鐢靛偓鍖栨椿鎬х殑浣滅敤錛岃屼笖鎻愪緵浜嗕竴縐嶇畝鍗曟湁鏁堢殑鍒跺楂樻椿鎬у拰楂樺鐢墊ч挋閽涚熆姘у寲鐗╃殑鏂規硶銆?/span>
浣滆呯畝浠?/strong>
鍛ㄥ憚鏁欐巿錛屽崡浜伐涓氬ぇ瀛﹀寲宸ュ闄紝鏉愭枡鍖栧宸ョ▼鍥藉閲嶇偣瀹為獙瀹ゆ暀鎺堬紝鍗氬＋鐢熷甯堬紝鍥藉綰ч珮灞傛寮曡繘浜烘墠錛屾睙鑻忕壒鑱樻暀鎺堬紝姹熻嫃鐪佹澃鍑洪潚騫村熀閲戣幏寰楄咃紝姹熻嫃鍙屽垱浜烘墠璁″垝鍜屽弻鍒涘洟闃熼鍐涗漢鎵嶈幏寰楄呫傜爺絀舵柟鍚戝寘鎷細浣庢俯鍥轟綋姘у寲鐗╃噧鏂欑數姹犲叧閿潗鏂欙紱璐ㄥ瓙浜ゆ崲鑶滅噧鏂欑數姹犲叧閿潗鏂欙紱鐢佃В姘村埗姘㈠偓鍖栧墏銆傝縿浠婂湪鍥介檯涓繪祦鏈熷垔涓婂彂琛?/span>SCI璁烘枃300浣欑瘒錛屽紩鐢?span style="font-family:;">16000浣欐錛?/span>h-index=70錛?/span>鍏朵腑鍖呮嫭Nature銆?/span>Nature Energy銆?/span>Nature Communications銆?/span>Science Advances絳夊浗闄呰憲鍚嶅垔鐗┿?/span>
鐩稿叧閾炬帴
https://pubs.acs.org/doi/10.1021/acsmaterialslett.1c00359